1 | # -*- mode: tcl; indent-tabs-mode: nil -*- |
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2 | # ---------------------------------------------------------------------- |
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3 | # HUBZERO: server for VMD |
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4 | # |
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5 | # This program runs VMD and acts as a server for client applications. |
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6 | # ---------------------------------------------------------------------- |
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7 | # Michael McLennan (mmclennan@purdue.edu) |
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8 | # ====================================================================== |
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9 | # Copyright (c) 2013 - HUBzero Foundation, LLC |
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10 | # ====================================================================== |
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11 | |
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12 | proc bgerror {mesg} { |
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13 | puts stderr "SERVER ERROR: $mesg" |
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14 | } |
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15 | |
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16 | proc FramesDefView { frameNum matrixNameList matrixValueList } { |
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17 | global Views |
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18 | if { ![string is int $frameNum] } { |
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19 | error "bad frame value \"$frameNum\"" |
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20 | } |
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21 | set Views($frameNum) [list $matrixNameList $matrixValueList] |
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22 | } |
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23 | |
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24 | proc FramesSetCmds { frameNum cmds } { |
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25 | global ViewCmds |
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26 | if { ![string is int $frameNum] } { |
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27 | error "bad frame value \"$frameNum\"" |
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28 | } |
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29 | set ViewCmds($frameNum) [join $cmds \;] |
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30 | } |
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31 | |
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32 | |
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33 | # ======================================================================== |
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34 | # Command aliases for VMD cmds in the slave interpreter |
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35 | # ======================================================================== |
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36 | |
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37 | # ---------------------------------------------------------------------- |
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38 | # USAGE: animate <option> <args>... |
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39 | # |
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40 | # The usual VMD "animate" command is problematic for this server. If we're |
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41 | # going to play the animation, the client will do it. Intercept any |
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42 | # "animate" commands in the scene scripts and do nothing. |
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43 | # ---------------------------------------------------------------------- |
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44 | proc Animate {args} { |
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45 | # do nothing |
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46 | } |
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47 | |
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48 | # ---------------------------------------------------------------------- |
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49 | # USAGE: atomselect <args>... |
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50 | # |
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51 | # Allow the usual VMD "atomselect" command to pass through, prohibiting |
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52 | # only the "writepdb" operation. |
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53 | # ---------------------------------------------------------------------- |
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54 | proc AtomSelect {args} { |
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55 | foreach arg $args { |
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56 | if { [string match "write*" $arg] } { |
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57 | error "atomselect \"$arg\" option is disallowed" |
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58 | } |
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59 | } |
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60 | return [uplevel 1 [concat atomselect $args]] |
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61 | } |
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62 | |
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63 | # ---------------------------------------------------------------------- |
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64 | # USAGE: atomselect_instance <args>... |
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65 | # |
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66 | # Called by the unknown proceduce when it encounters atom selections in the |
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67 | # form "atomselect[0-9]+". Pass through commands to the VMD interpreter. |
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68 | # ---------------------------------------------------------------------- |
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69 | proc AtomSelectInstance {args} { |
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70 | set cmd [lindex $args 0] |
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71 | if { [regexp {atomselect[0-9]+} $cmd] } { |
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72 | return [uplevel 1 $args] |
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73 | } |
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74 | } |
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75 | |
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76 | # ---------------------------------------------------------------------- |
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77 | # USAGE: display option ?arg arg...? |
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78 | # |
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79 | # Executes the "command arg arg..." string in the server and substitutes |
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80 | # the result into the template string in place of each "%v" field. |
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81 | # Sends the result back to the client. |
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82 | # ---------------------------------------------------------------------- |
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83 | proc Display {args} { |
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84 | set option [lindex $args 0] |
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85 | if {[lsearch {resize reposition rendermode update fps} $option] >= 0} { |
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86 | # ignore these commands -- they cause trouble |
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87 | return "" |
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88 | } |
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89 | eval display $args |
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90 | } |
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91 | |
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92 | # ---------------------------------------------------------------------- |
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93 | # USAGE: Drag start|end |
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94 | # |
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95 | # Resizes the visualization window to the given width <w> and height |
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96 | # <h>. The next image sent should be this size. |
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97 | # ---------------------------------------------------------------------- |
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98 | proc Drag {action} { |
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99 | global DisplayProps |
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100 | |
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101 | switch -- $action { |
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102 | start { |
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103 | # simplify rendering so it goes faster during drag operations |
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104 | set neww [expr {round($DisplayProps(framew)/2.0)}] |
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105 | set newh [expr {round($DisplayProps(frameh)/2.0)}] |
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106 | server_safe_resize $neww $newh |
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107 | display rendermode Normal |
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108 | display shadows off |
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109 | |
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110 | # gah: turn off rep change |
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111 | if 0 { |
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112 | foreach nmol [molinfo list] { |
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113 | set max [molinfo $nmol get numreps] |
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114 | for {set nrep 0} {$nrep < $max} {incr nrep} { |
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115 | mol modstyle $nrep $nmol "Lines" |
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116 | } |
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117 | } |
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118 | } |
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119 | } |
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120 | end { |
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121 | # put original rendering options back |
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122 | server_safe_resize $DisplayProps(framew) $DisplayProps(frameh) |
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123 | display rendermode $DisplayProps(rendermode) |
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124 | display shadows $DisplayProps(shadows) |
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125 | |
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126 | # gah: turn off rep change |
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127 | if 0 { |
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128 | # restore rendering methods for all representations |
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129 | foreach nmol [molinfo list] { |
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130 | set max [molinfo $nmol get numreps] |
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131 | for {set nrep 0} {$nrep < $max} {incr nrep} { |
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132 | mol modstyle $nrep $nmol $DisplayProps(rep-$nmol-$nrep) |
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133 | } |
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134 | } |
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135 | } |
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136 | } |
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137 | default { |
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138 | error "bad option \"$action\": should be start or end" |
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139 | } |
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140 | } |
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141 | } |
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142 | |
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143 | # ---------------------------------------------------------------------- |
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144 | # USAGE: frames defview <frame> {matrixNames...} {matrixValues...} |
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145 | # USAGE: frames time <epochValue> <start> ?<finish>? ?<inc>? ?-defview? |
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146 | # USAGE: frames rotate <epochValue> <xa> <ya> <za> <number> |
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147 | # USAGE: frames max |
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148 | # |
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149 | # Used to request one or more frames for an animation. A "time" |
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150 | # animation is a series of frames between two time points. A "rotate" |
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151 | # animation is a series of frames that rotate the view 360 degrees. |
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152 | # |
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153 | # The <epochValue> is passed by the client to indicate the relevance of |
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154 | # the request. Whenever the client enters a new epoch, it is no longer |
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155 | # concerned with any earlier epochs, so the server can ignore pending |
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156 | # images that are out of date. The server sends back the epoch with |
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157 | # all frames so the client can understand if the frames are relevant. |
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158 | # |
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159 | # The "defview" operation sets the default view associated with each |
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160 | # frame. Animation scripts can change the default view to a series of |
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161 | # fly-through views. This operation provides a way of storing those |
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162 | # views. |
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163 | # |
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164 | # For a "time" animation, the <start> is a number of a requested frame. |
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165 | # The <finish> is the last frame in the series. The <inc> is the step |
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166 | # by which the frames should be generated, which may be larger than 1. |
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167 | # |
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168 | # For a "rotate" animation, the <xa>,<ya>,<za> angles indicate the |
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169 | # direction of the rotation. The <number> is the number of frames |
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170 | # requested for a full 360 degree rotation. |
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171 | # |
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172 | # The "frames max" query returns the maximum number of frames in the |
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173 | # trajectory. The server uses this to figure out the limits of |
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174 | # animation. |
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175 | # ---------------------------------------------------------------------- |
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176 | proc Frames {what args} { |
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177 | global client Epoch Work Views |
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178 | |
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179 | # check incoming parameters |
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180 | switch -- $what { |
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181 | time { |
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182 | set epochValue [lindex $args 0] |
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183 | set start [lindex $args 1] |
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184 | |
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185 | set i [lsearch $args -defview] |
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186 | if {$i >= 0} { |
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187 | set defview 1 |
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188 | set args [lreplace $args $i $i] |
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189 | } else { |
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190 | set defview 0 |
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191 | } |
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192 | |
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193 | set finish [lindex $args 2] |
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194 | if {$finish eq ""} { |
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195 | set finish $start |
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196 | } |
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197 | set inc [lindex $args 3] |
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198 | if {$inc eq ""} { |
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199 | set inc 1 |
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200 | } |
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201 | |
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202 | if {![string is integer $finish]} { |
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203 | server_oops $client \ |
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204 | "bad animation end \"$finish\" should be integer" |
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205 | return |
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206 | } |
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207 | if {![string is integer $inc] || $inc == 0} { |
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208 | server_oops $client \ |
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209 | "bad animation inc \"$inc\" should be non-zero integer" |
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210 | return |
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211 | } |
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212 | if {($finish < $start && $inc > 0) || |
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213 | ($finish > $start && $inc < 0)} { |
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214 | server_oops $client \ |
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215 | "bad animation limits: from $start to $finish by $inc" |
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216 | } |
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217 | |
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218 | # new epoch? then clean out work queue |
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219 | if {$epochValue > $Epoch} { |
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220 | array unset Work |
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221 | set Work(queue) "" |
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222 | set Epoch $epochValue |
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223 | } |
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224 | |
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225 | # add these frames to the queue |
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226 | if {$inc > 0} { |
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227 | # generate frames in play>> direction |
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228 | for {set n $start} {$n <= $finish} {incr n $inc} { |
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229 | if {![info exists Work($n)]} { |
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230 | lappend Work(queue) [list epoch $epochValue frame $n num $n defview $defview] |
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231 | set Work($n) 1 |
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232 | } |
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233 | } |
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234 | } else { |
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235 | # generate frames in <<play direction |
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236 | for {set n $start} {$n >= $finish} {incr n $inc} { |
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237 | if {![info exists Work($n)]} { |
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238 | lappend Work(queue) [list epoch $epochValue frame $n num $n defview $defview] |
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239 | set Work($n) 1 |
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240 | } |
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241 | } |
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242 | } |
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243 | } |
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244 | rotate { |
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245 | set epochValue [lindex $args 0] |
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246 | set mx [lindex $args 1] |
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247 | if {![string is double -strict $mx]} { |
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248 | server_oops $client \ |
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249 | "bad mx rotation value \"$mx\" should be double" |
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250 | return |
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251 | } |
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252 | set my [lindex $args 2] |
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253 | if {![string is double -strict $my]} { |
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254 | server_oops $client \ |
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255 | "bad my rotation value \"$my\" should be double" |
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256 | return |
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257 | } |
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258 | set mz [lindex $args 3] |
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259 | if {![string is double -strict $mz]} { |
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260 | server_oops $client \ |
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261 | "bad mz rotation value \"$mz\" should be double" |
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262 | return |
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263 | } |
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264 | set num [lindex $args 4] |
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265 | if {![string is integer -strict $num] || $num < 2} { |
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266 | server_oops $client \ |
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267 | "bad number of rotation frames \"$num\" should be integer > 1" |
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268 | return |
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269 | } |
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270 | |
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271 | # |
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272 | # Compute the rotation matrix for each rotated view. Start |
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273 | # with the current rotation matrix. Rotate that around a |
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274 | # vector perpendicular to the plane of rotation for the given |
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275 | # angles (mx,my,mz). Find vector that by rotating some vector |
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276 | # such as (1,1,1) by the angles (mx,my,mz). Do a couple of |
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277 | # times and compute the differences between those vectors. |
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278 | # Then, compute the cross product of the differences. The |
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279 | # result is the axis of rotation. |
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280 | # |
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281 | set lastrotx [trans axis x $mx deg] |
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282 | set lastroty [trans axis y $my deg] |
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283 | set lastrotz [trans axis z $mz deg] |
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284 | set lastrot [transmult $lastrotx $lastroty $lastrotz] |
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285 | |
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286 | set lastvec [list 1 1 1] |
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287 | foreach v {1 2} { |
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288 | foreach row $lastrot comp {x y z w} { |
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289 | # multiply each row by last vector |
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290 | set vec($comp) 0 |
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291 | for {set i 0} {$i < 3} {incr i} { |
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292 | set vec($comp) [expr {$vec($comp) + [lindex $row $i]}] |
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293 | } |
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294 | } |
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295 | set vec${v}(x) [expr {$vec(x)-[lindex $lastvec 0]}] |
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296 | set vec${v}(y) [expr {$vec(y)-[lindex $lastvec 1]}] |
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297 | set vec${v}(z) [expr {$vec(z)-[lindex $lastvec 2]}] |
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298 | |
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299 | set lastvec [list $vec(x) $vec(y) $vec(z)] |
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300 | set lastrot [transmult $lastrot $lastrotx $lastroty $lastrotz] |
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301 | } |
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302 | |
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303 | set crx [expr {$vec1(y)*$vec2(z)-$vec1(z)*$vec2(y)}] |
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304 | set cry [expr {$vec1(z)*$vec2(x)-$vec1(x)*$vec2(z)}] |
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305 | set crz [expr {$vec1(x)*$vec2(y)-$vec1(y)*$vec2(x)}] |
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306 | |
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307 | set angle [expr {360.0/$num}] |
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308 | set rotby [transabout [list $crx $cry $crz] $angle deg] |
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309 | set rotm [lindex [molinfo top get rotate_matrix] 0] |
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310 | |
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311 | # compute cross product of (1,1,1,0) and rotated vector from above |
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312 | |
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313 | for {set n 0} {$n < $num} {incr n} { |
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314 | lappend Work(queue) \ |
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315 | [list epoch $epochValue rotate $rotm num $n defview 0] |
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316 | set rotm [transmult $rotby $rotm] |
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317 | set Work($n) 1 |
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318 | } |
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319 | } |
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320 | defview { |
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321 | eval FramesDefView $args |
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322 | } |
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323 | setcmds { |
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324 | eval FramesSetCmds $args |
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325 | } |
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326 | max { |
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327 | set maxFrames 0 |
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328 | foreach mol [molinfo list] { |
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329 | set n [molinfo $mol get numframes] |
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330 | if { $n > $maxFrames } { |
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331 | set maxFrames $n |
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332 | } |
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333 | } |
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334 | return $maxFrames |
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335 | # gah: fix to return max correct max frames. |
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336 | if 0 { |
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337 | set nmol [lindex [molinfo list] 0] |
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338 | if {$nmol ne ""} { |
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339 | return [molinfo $nmol get numframes] |
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340 | } |
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341 | return 0 |
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342 | } |
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343 | } |
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344 | default { |
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345 | error "bad option \"$what\": should be defview, time, rotate, setcmds, or max" |
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346 | } |
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347 | } |
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348 | |
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349 | # service the queue at some point |
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350 | server_send_image -eventually |
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351 | } |
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352 | |
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353 | # ---------------------------------------------------------------------- |
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354 | # USAGE: getview |
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355 | # |
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356 | # Used to query the scaling and centering of the initial view set |
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357 | # by VMD after a molecule is loaded. Returns the following: |
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358 | # <viewName> -rotate <mtx> -global <mtx> -scale <mtx> -center <mtx> |
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359 | # ---------------------------------------------------------------------- |
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360 | proc GetView {} { |
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361 | global Scenes |
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362 | |
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363 | if { [llength [molinfo list]] == 0 } { |
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364 | return "" |
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365 | } |
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366 | if { $Scenes(@CURRENT) eq "" } { |
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367 | return "" |
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368 | } |
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369 | |
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370 | set rval [list $Scenes(@CURRENT)] ;# start with the scene id |
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371 | |
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372 | lappend rval \ |
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373 | -rotate [lindex [molinfo top get rotate_matrix] 0] \ |
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374 | -scale [lindex [molinfo top get scale_matrix] 0] \ |
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375 | -center [lindex [molinfo top get center_matrix] 0] \ |
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376 | -global [lindex [molinfo top get global_matrix] 0] |
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377 | |
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378 | return $rval |
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379 | } |
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380 | |
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381 | # ---------------------------------------------------------------------- |
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382 | # USAGE: load <file> <file>... |
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383 | # |
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384 | # Loads the molecule data from one or more files, which may be PDB, |
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385 | # DCD, PSF, etc. |
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386 | # ---------------------------------------------------------------------- |
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387 | proc Load { fileList } { |
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388 | global MolInfo MolNames tmpDir |
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389 | |
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390 | # clear all existing molecules |
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391 | foreach nmol [molinfo list] { |
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392 | mol delete $nmol |
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393 | } |
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394 | catch {unset MolInfo} |
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395 | set MolNames "" |
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396 | |
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397 | # load new files |
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398 | if {![regexp {^@name:} $fileList]} { |
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399 | # make sure that there is at least one name in the list |
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400 | set fileList [linsert $fileList 0 "@name:0"] |
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401 | } |
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402 | |
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403 | set slot 0 |
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404 | set op "badOp" |
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405 | foreach file $fileList { |
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406 | if {[regexp {^@name:(.+)} $file match name]} { |
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407 | set op "new" |
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408 | continue |
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409 | } |
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410 | if { $tmpDir != "" } { |
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411 | set tmpFile [file join $tmpDir [file tail $file]] |
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412 | if { [file exists $tmpFile] } { |
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413 | set file $tmpFile |
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414 | } |
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415 | } |
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416 | mol $op $file waitfor all |
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417 | if { ![info exists name] } { |
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418 | puts stderr "can't find name for file: file=$file" |
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419 | } |
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420 | if {$op eq "new"} { |
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421 | set newnum [lindex [molinfo list] end] |
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422 | if {[lsearch -exact MolNames $name] < 0} { |
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423 | lappend MolNames $name |
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424 | } |
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425 | set MolInfo($name) $newnum |
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426 | set MolInfo($slot) $newnum |
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427 | incr slot |
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428 | set op "addfile" |
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429 | } |
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430 | } |
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431 | |
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432 | # BE CAREFUL -- force a "display update" here |
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433 | # that triggers something in VMD that changes view matrices now, |
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434 | # so if we change them later, the new values stick |
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435 | display update |
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436 | } |
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437 | |
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438 | # ---------------------------------------------------------------------- |
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439 | # These commands just confuse things, so ignore them silently. |
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440 | # ---------------------------------------------------------------------- |
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441 | proc NoOp {args} { |
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442 | # do nothing |
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443 | } |
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444 | |
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445 | # ---------------------------------------------------------------------- |
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446 | # USAGE: queryinfo <x> <y> ?-prev atomid atomid? |
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447 | # USAGE: queryinfo <x> <y> ?-prev atomid? |
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448 | # USAGE: queryinfo <x> <y> |
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449 | # |
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450 | # Picks the atom at screen coordinate <x>,<y> and returns information |
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451 | # about it. If one previous atom is specified, then this command |
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452 | # returns the bond length between the previous atom and the current |
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453 | # one. If two previous atoms are specified, then it returns the |
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454 | # angle between the three atoms. |
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455 | # ---------------------------------------------------------------------- |
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456 | proc QueryInfo {x y args} { |
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457 | global DisplayProps MolNames MolInfo |
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458 | |
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459 | # handle command arguments |
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460 | set prevatoms "" |
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461 | while {[llength $args] > 0} { |
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462 | set option [lindex $args 0] |
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463 | set args [lrange $args 1 end] |
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464 | if {$option eq "-prev"} { |
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465 | while {[llength $args] > 0} { |
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466 | set val [lindex $args 0] |
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467 | if {[regexp {^[0-9]} $val]} { |
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468 | lappend prevatoms $val |
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469 | set args [lrange $args 1 end] |
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470 | } else { |
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471 | break |
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472 | } |
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473 | } |
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474 | } else { |
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475 | error "bad option \"$option\": should be -prev" |
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476 | } |
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477 | } |
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478 | |
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479 | # be careful -- VMD uses coordinates from LOWER-left corner of window |
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480 | set vmdy [expr {$DisplayProps(frameh)-$y}] |
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481 | |
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482 | set vals [pick $x $vmdy] |
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483 | if {$vals ne ""} { |
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484 | array set data $vals |
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485 | |
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486 | # map the molecule ID back to the name used within MD Showcase |
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487 | foreach molname $MolNames { |
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488 | if {$MolInfo($molname) == $data(mol)} { |
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489 | set data(molname) $molname |
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490 | break |
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491 | } |
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492 | } |
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493 | |
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494 | # pass back the click coord on screen so we know where this came from |
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495 | set data(screenx) $x |
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496 | set data(screeny) $y |
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497 | |
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498 | # if there are -prev atoms, query extra info |
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499 | set curr [list $data(index) $data(mol)] |
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500 | set meas $prevatoms |
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501 | set i [lsearch -exact $meas $curr] |
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502 | if {$i >= 0} { |
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503 | set meas [lreplace $meas $i $i] |
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504 | } |
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505 | set meas [linsert $meas 0 $curr] |
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506 | set meas [lrange $meas 0 2] |
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507 | |
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508 | switch -- [llength $meas] { |
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509 | 2 { |
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510 | set data(bondlength) [measure bond $meas] |
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511 | } |
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512 | 3 { |
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513 | set data(bondlength) [measure bond [lrange $meas 0 1]] |
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514 | set data(bondlength2) [measure bond [lrange $meas 1 2]] |
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515 | set data(angle) [measure angle $meas] |
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516 | } |
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517 | } |
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518 | |
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519 | # convert data back to return value |
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520 | set vals [array get data] |
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521 | } |
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522 | return $vals |
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523 | } |
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524 | |
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525 | |
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526 | # ---------------------------------------------------------------------- |
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527 | # USAGE: resize <w> <h> |
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528 | # |
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529 | # Resizes the visualization window to the given width <w> and height |
---|
530 | # <h>. The next image sent should be this size. |
---|
531 | # ---------------------------------------------------------------------- |
---|
532 | proc Resize {w h} { |
---|
533 | global DisplayProps |
---|
534 | |
---|
535 | # store the desired size in case we downscale |
---|
536 | set DisplayProps(framew) $w |
---|
537 | set DisplayProps(frameh) $h |
---|
538 | |
---|
539 | server_safe_resize $w $h |
---|
540 | } |
---|
541 | |
---|
542 | # ---------------------------------------------------------------------- |
---|
543 | # USAGE: rock off |
---|
544 | # USAGE: rock x|y|z by <step> ?<n>? |
---|
545 | # |
---|
546 | # The usual VMD "rock" command is problematic for this server. If we're |
---|
547 | # going to rock the animation, the client will do it. Intercept any "rock" |
---|
548 | # commands in the scene scripts and do nothing. |
---|
549 | # ---------------------------------------------------------------------- |
---|
550 | proc Rock {args} { |
---|
551 | # do nothing |
---|
552 | } |
---|
553 | |
---|
554 | |
---|
555 | # ---------------------------------------------------------------------- |
---|
556 | # USAGE: scene define id <script> |
---|
557 | # USAGE: scene show id ?-before <viewCmd>? ?-after <viewCmd>? |
---|
558 | # USAGE: scene clear |
---|
559 | # USAGE: scene forget ?id id...? |
---|
560 | # |
---|
561 | # Used to define and manipulate scenes of the trajectory information |
---|
562 | # loaded previously by the "load" command. The "define" operation |
---|
563 | # defines the script that loads a scene called <id>. The "show" |
---|
564 | # operation executes that script to show the scene. The "clear" |
---|
565 | # operation clears the current scene (usually in preparation for |
---|
566 | # showing another scene). The "forget" operation erases one or more |
---|
567 | # scene definitions; if no ids are specified, then all scenes are |
---|
568 | # forgotten. |
---|
569 | # ---------------------------------------------------------------------- |
---|
570 | proc Scene {option args} { |
---|
571 | global Scenes Views MolInfo DisplayProps parser |
---|
572 | |
---|
573 | switch -- $option { |
---|
574 | define { |
---|
575 | if {[llength $args] != 2} { |
---|
576 | error "wrong # args: should be \"scene define id script\"" |
---|
577 | } |
---|
578 | set id [lindex $args 0] |
---|
579 | set script [lindex $args 1] |
---|
580 | set Scenes($id) $script |
---|
581 | } |
---|
582 | show { |
---|
583 | if {[llength $args] < 1 || [llength $args] > 5} { |
---|
584 | error "wrong # args: should be \"scene show id ?-before cmd? ?-after cmd?\"" |
---|
585 | } |
---|
586 | set id [lindex $args 0] |
---|
587 | if {![info exists Scenes($id)]} { |
---|
588 | error "bad scene id \"$id\": should be one of [join [array names Scenes] {, }]" |
---|
589 | } |
---|
590 | |
---|
591 | set triggers(before) "" |
---|
592 | set triggers(after) "" |
---|
593 | foreach {key val} [lrange $args 1 end] { |
---|
594 | switch -- $key { |
---|
595 | -before { |
---|
596 | set triggers(before) $val |
---|
597 | } |
---|
598 | -after { |
---|
599 | set triggers(after) $val |
---|
600 | } |
---|
601 | default { |
---|
602 | error "bad option \"$key\": should be -before, -after" |
---|
603 | } |
---|
604 | } |
---|
605 | } |
---|
606 | |
---|
607 | # if -before arg was given, send back the view right now |
---|
608 | if {$triggers(before) ne "" && $Scenes(@CURRENT) ne ""} { |
---|
609 | TellMe $triggers(before) getview |
---|
610 | } |
---|
611 | |
---|
612 | # clear the old scene |
---|
613 | Scene clear |
---|
614 | display resetview |
---|
615 | |
---|
616 | # use a safe interp to keep things safe |
---|
617 | foreach val [$parser eval {info vars}] { |
---|
618 | # clear all variables created by previous scripts |
---|
619 | $parser eval [list catch [list unset $val]] |
---|
620 | } |
---|
621 | $parser eval [list array set mol [array get MolInfo]] |
---|
622 | |
---|
623 | if {[catch {$parser eval $Scenes($id)} result]} { |
---|
624 | global errorInfo |
---|
625 | error "$errorInfo\n$result\nwhile loading scene \"$id\"" |
---|
626 | } |
---|
627 | |
---|
628 | # capture display characteristics in case we ever need to reset |
---|
629 | set DisplayProps(rendermode) "Normal" |
---|
630 | set DisplayProps(shadows) [display get shadows] |
---|
631 | |
---|
632 | foreach nmol [molinfo list] { |
---|
633 | set max [molinfo $nmol get numreps] |
---|
634 | for {set nrep 0} {$nrep < $max} {incr nrep} { |
---|
635 | set style [lindex [molinfo $nmol get "{rep $nrep}"] 0] |
---|
636 | set DisplayProps(rep-$nmol-$nrep) $style |
---|
637 | } |
---|
638 | } |
---|
639 | |
---|
640 | # store the scene id for later |
---|
641 | set Scenes(@CURRENT) $id |
---|
642 | |
---|
643 | # if -after arg was given, send back the view after the script |
---|
644 | if {$triggers(after) ne ""} { |
---|
645 | TellMe $triggers(after) getview |
---|
646 | } |
---|
647 | } |
---|
648 | clear { |
---|
649 | foreach mol [molinfo list] { |
---|
650 | set numOfRep [lindex [mol list $mol] 12] |
---|
651 | for {set i 1} {$i <= $numOfRep} {incr i} { |
---|
652 | mol delrep 0 $mol |
---|
653 | } |
---|
654 | } |
---|
655 | set Scenes(@CURRENT) "" |
---|
656 | array unset Views |
---|
657 | array unset ViewCmds |
---|
658 | |
---|
659 | # reset the server properties |
---|
660 | axes location off |
---|
661 | color Display Background black |
---|
662 | eval $DisplayProps(options) |
---|
663 | } |
---|
664 | forget { |
---|
665 | if {[llength $args] == 0} { |
---|
666 | set args [array names Scenes] |
---|
667 | } |
---|
668 | foreach id $args { |
---|
669 | if {$id eq "@CURRENT"} continue |
---|
670 | catch {unset Scenes($id)} |
---|
671 | if {$id eq $Scenes(@CURRENT)} { |
---|
672 | set Scenes(@CURRENT) "" |
---|
673 | } |
---|
674 | } |
---|
675 | } |
---|
676 | default { |
---|
677 | error "bad option \"$option\": should be define, show, clear, forget" |
---|
678 | } |
---|
679 | } |
---|
680 | } |
---|
681 | |
---|
682 | # ---------------------------------------------------------------------- |
---|
683 | # USAGE: setquality normal|high |
---|
684 | # |
---|
685 | # Sets the rendering quality for the scene--either "high" (GLSL) or |
---|
686 | # normal. |
---|
687 | # ---------------------------------------------------------------------- |
---|
688 | proc SetQuality {newval} { |
---|
689 | global DisplayProps |
---|
690 | |
---|
691 | switch -- $newval { |
---|
692 | high { |
---|
693 | display rendermode GLSL |
---|
694 | set DisplayProps(rendermode) "GLSL" |
---|
695 | } |
---|
696 | normal { |
---|
697 | display rendermode Normal |
---|
698 | set DisplayProps(rendermode) "Normal" |
---|
699 | } |
---|
700 | default { |
---|
701 | error "bad quality value \"$newval\": should be normal or high" |
---|
702 | } |
---|
703 | } |
---|
704 | } |
---|
705 | |
---|
706 | # ---------------------------------------------------------------------- |
---|
707 | # USAGE: setview ?-rotate <mtx>? ?-scale <mtx>? ?-center <mtx>? ?-global <mtx>? |
---|
708 | # |
---|
709 | # Sets the view matrix for one or more components of the view. This |
---|
710 | # is a convenient way of getting a view for a particular frame just |
---|
711 | # right in one shot. |
---|
712 | # ---------------------------------------------------------------------- |
---|
713 | proc SetView {args} { |
---|
714 | if {[llength $args] == 8} { |
---|
715 | # setting all matrices? then start clean |
---|
716 | display resetview |
---|
717 | } |
---|
718 | foreach {key val} $args { |
---|
719 | switch -- $key { |
---|
720 | -rotate { |
---|
721 | foreach mol [molinfo list] { |
---|
722 | molinfo $mol set rotate_matrix [list $val] |
---|
723 | } |
---|
724 | } |
---|
725 | -scale { |
---|
726 | foreach mol [molinfo list] { |
---|
727 | molinfo $mol set scale_matrix [list $val] |
---|
728 | } |
---|
729 | } |
---|
730 | -center { |
---|
731 | foreach mol [molinfo list] { |
---|
732 | molinfo $mol set center_matrix [list $val] |
---|
733 | } |
---|
734 | } |
---|
735 | -global { |
---|
736 | foreach mol [molinfo list] { |
---|
737 | molinfo $mol set global_matrix [list $val] |
---|
738 | } |
---|
739 | } |
---|
740 | default { |
---|
741 | error "bad option \"$key\": should be -rotate, -scale, -center, or -global" |
---|
742 | } |
---|
743 | } |
---|
744 | } |
---|
745 | } |
---|
746 | |
---|
747 | # ---------------------------------------------------------------------- |
---|
748 | # USAGE: smoothreps <value> |
---|
749 | # |
---|
750 | # Changes the smoothing factor for all representations of the current |
---|
751 | # molecule. |
---|
752 | # ---------------------------------------------------------------------- |
---|
753 | proc SmoothReps {val} { |
---|
754 | if {$val < 0} { |
---|
755 | error "bad smoothing value \"$val\": should be >= 0" |
---|
756 | } |
---|
757 | foreach nmol [molinfo list] { |
---|
758 | set max [molinfo $nmol get numreps] |
---|
759 | for {set nrep 0} {$nrep < $max} {incr nrep} { |
---|
760 | mol smoothrep $nmol $nrep $val |
---|
761 | } |
---|
762 | } |
---|
763 | } |
---|
764 | |
---|
765 | # ---------------------------------------------------------------------- |
---|
766 | # USAGE: tellme "command template with %v" command arg arg... |
---|
767 | # |
---|
768 | # Executes the "command arg arg..." string in the server and substitutes |
---|
769 | # the result into the template string in place of each "%v" field. |
---|
770 | # Sends the result back to the client. |
---|
771 | # ---------------------------------------------------------------------- |
---|
772 | proc TellMe {fmt args} { |
---|
773 | global parser client |
---|
774 | |
---|
775 | # evaluate args as a command and subst the result in the fmt string |
---|
776 | if {[catch {$parser eval $args} result] == 0} { |
---|
777 | server_send_result $client "nv>[string map [list %v $result] $fmt]" |
---|
778 | } else { |
---|
779 | server_oops $client $result |
---|
780 | } |
---|
781 | } |
---|
782 | |
---|
783 | |
---|
784 | # ======================================================================== |
---|
785 | # Server procedures |
---|
786 | # ======================================================================== |
---|
787 | |
---|
788 | # |
---|
789 | # USAGE: server_safe_resize <width> <height> |
---|
790 | # |
---|
791 | # Use this version instead of "display resize" whenever possible. |
---|
792 | # The VMD "display resize" goes into the event loop, so calling that |
---|
793 | # causes things to execute out of order. Use this method instead to |
---|
794 | # store the change and actually resize later. |
---|
795 | # |
---|
796 | proc server_safe_resize {w h} { |
---|
797 | global DisplaySize |
---|
798 | |
---|
799 | if {$w != $DisplaySize(w) || $h != $DisplaySize(h)} { |
---|
800 | set DisplaySize(w) $w |
---|
801 | set DisplaySize(h) $h |
---|
802 | set DisplaySize(changed) yes |
---|
803 | } |
---|
804 | } |
---|
805 | |
---|
806 | # ---------------------------------------------------------------------- |
---|
807 | # SERVER CORE |
---|
808 | # ---------------------------------------------------------------------- |
---|
809 | proc server_accept {cid addr port} { |
---|
810 | global env |
---|
811 | |
---|
812 | fileevent $cid readable [list server_handle $cid $cid] |
---|
813 | fconfigure $cid -buffering none -blocking 0 |
---|
814 | |
---|
815 | if {[info exists env(LOCAL)]} { |
---|
816 | # identify server type to this client |
---|
817 | # VMD on the hub has this built in, but stock versions can |
---|
818 | # set the environment variable as a work-around |
---|
819 | puts $cid "vmd 0.1" |
---|
820 | } |
---|
821 | } |
---|
822 | |
---|
823 | proc server_handle {cin cout} { |
---|
824 | global parser buffer client |
---|
825 | |
---|
826 | if {[gets $cin line] < 0} { |
---|
827 | # when client drops connection, we can exit |
---|
828 | # nanoscale will spawn a new server next time we need it |
---|
829 | if {[eof $cin]} { |
---|
830 | server_exit $cin $cout 0 |
---|
831 | } |
---|
832 | } else { |
---|
833 | append buffer($cin) $line "\n" |
---|
834 | if {[info complete $buffer($cin)]} { |
---|
835 | set request $buffer($cin) |
---|
836 | set buffer($cin) "" |
---|
837 | set client $cout |
---|
838 | if {[catch {$parser eval $request} result] == 0} { |
---|
839 | server_send_image -eventually |
---|
840 | } else { |
---|
841 | server_oops $cout $result |
---|
842 | if { [string match "invalid command*" $result] } { |
---|
843 | bgerror "server received invalid command: $result" |
---|
844 | server_exit $cin $cout 1 |
---|
845 | } |
---|
846 | } |
---|
847 | } |
---|
848 | } |
---|
849 | } |
---|
850 | |
---|
851 | proc server_send {cout} { |
---|
852 | global Epoch Sendqueue |
---|
853 | |
---|
854 | # grab the next chunk of output and send it along |
---|
855 | # discard any chunks from an older epoch |
---|
856 | while {[llength $Sendqueue] > 0} { |
---|
857 | set chunk [lindex $Sendqueue 0] |
---|
858 | set Sendqueue [lrange $Sendqueue 1 end] |
---|
859 | |
---|
860 | catch {unset data}; array set data $chunk |
---|
861 | if {$data(epoch) < 0 || $data(epoch) == $Epoch} { |
---|
862 | catch {puts $cout $data(cmd)} |
---|
863 | |
---|
864 | # if this command has a binary data block, send it specially |
---|
865 | if {[string length $data(bytes)] > 0} { |
---|
866 | fconfigure $cout -translation binary |
---|
867 | catch {puts $cout $data(bytes)} |
---|
868 | fconfigure $cout -translation auto |
---|
869 | } |
---|
870 | break |
---|
871 | } |
---|
872 | } |
---|
873 | |
---|
874 | # nothing left? Then stop callbacks until we get more |
---|
875 | if {[llength $Sendqueue] == 0} { |
---|
876 | fileevent $cout writable "" |
---|
877 | server_send_image -eventually |
---|
878 | } |
---|
879 | } |
---|
880 | |
---|
881 | proc server_exit {cin cout code} { |
---|
882 | catch {close $cin} |
---|
883 | catch {exit $code} |
---|
884 | |
---|
885 | } |
---|
886 | |
---|
887 | # ---------------------------------------------------------------------- |
---|
888 | # SERVER RESPONSES |
---|
889 | # ---------------------------------------------------------------------- |
---|
890 | |
---|
891 | proc server_send_image {{when -now}} { |
---|
892 | global client Epoch Work Views ViewCmds Sendqueue DisplaySize |
---|
893 | |
---|
894 | if {$when eq "-eventually"} { |
---|
895 | after cancel server_send_image |
---|
896 | after 1 server_send_image |
---|
897 | return |
---|
898 | } elseif {$when ne "-now"} { |
---|
899 | error "bad option \"$when\" for server_send_image: should be -now or -eventually" |
---|
900 | } |
---|
901 | |
---|
902 | # is there a display resize pending? then resize and try again later |
---|
903 | if {$DisplaySize(changed)} { |
---|
904 | set DisplaySize(changed) 0 |
---|
905 | after idle [list display resize $DisplaySize(w) $DisplaySize(h)] |
---|
906 | after 20 server_send_image |
---|
907 | return |
---|
908 | } |
---|
909 | |
---|
910 | # loop through requests in the work queue and skip any from an older epoch |
---|
911 | while {1} { |
---|
912 | if {[llength $Work(queue)] == 0} { |
---|
913 | return |
---|
914 | } |
---|
915 | |
---|
916 | set rec [lindex $Work(queue) 0] |
---|
917 | set Work(queue) [lrange $Work(queue) 1 end] |
---|
918 | |
---|
919 | catch {unset item}; array set item $rec |
---|
920 | if {$item(epoch) < $Epoch} { |
---|
921 | catch {unset Work($item(num))} |
---|
922 | continue |
---|
923 | } |
---|
924 | |
---|
925 | # set the frame characteristics and render this frame |
---|
926 | if {[info exists item(frame)]} { |
---|
927 | animate goto $item(frame) |
---|
928 | } elseif {[info exists item(rotate)]} { |
---|
929 | foreach mol [molinfo list] { |
---|
930 | molinfo $mol set rotate_matrix [list $item(rotate)] |
---|
931 | } |
---|
932 | # send rotation matrix back to the client so we can pause later |
---|
933 | server_send_latest $client [list nv>rotatemtx $item(num) $item(rotate)] |
---|
934 | } else { |
---|
935 | puts "ERROR: bad work frame: [array get item]" |
---|
936 | } |
---|
937 | |
---|
938 | # flag to use the stored default view? then set that |
---|
939 | if {[info exists item(defview)] && $item(defview)} { |
---|
940 | if {[info exists Views($item(frame))]} { |
---|
941 | foreach mol [molinfo list] { |
---|
942 | eval molinfo $mol set $Views($item(frame)) |
---|
943 | } |
---|
944 | } |
---|
945 | } |
---|
946 | if { [info exists item(frame)] && |
---|
947 | [info exists ViewCmds($item(frame))] } { |
---|
948 | if { [catch { |
---|
949 | eval $ViewCmds($item(frame)) |
---|
950 | } errs] != 0 } { |
---|
951 | puts stderr "viewcmd error: $errs" |
---|
952 | } |
---|
953 | } |
---|
954 | array unset Work $item(num) |
---|
955 | break |
---|
956 | } |
---|
957 | |
---|
958 | # force VMD to update and grab the screen |
---|
959 | display update |
---|
960 | tkrender SnapShot |
---|
961 | |
---|
962 | set data [SnapShot data -format PPM] |
---|
963 | server_send_latest $client "nv>image epoch $item(epoch) frame $item(num) length [string length $data]" $data |
---|
964 | |
---|
965 | # if there's more work in the queue, try again later |
---|
966 | if {[llength $Work(queue)] > 0} { |
---|
967 | after 1 server_send_image |
---|
968 | } |
---|
969 | } |
---|
970 | |
---|
971 | proc SetTemporaryDirectory { path } { |
---|
972 | global tmpDir |
---|
973 | |
---|
974 | set tmpDir $path |
---|
975 | } |
---|
976 | |
---|
977 | proc server_send_result {cout cmd {data ""}} { |
---|
978 | global Sendqueue |
---|
979 | |
---|
980 | # add this result to the output queue |
---|
981 | # use the epoch -1 to force the send even if the epoch has changed |
---|
982 | lappend Sendqueue [list epoch -1 cmd $cmd bytes $data] |
---|
983 | fileevent $cout writable [list server_send $cout] |
---|
984 | } |
---|
985 | |
---|
986 | proc server_send_latest {cout cmd {data ""}} { |
---|
987 | global Epoch Sendqueue |
---|
988 | |
---|
989 | # add this result to the output queue |
---|
990 | # wait until the client is ready, then send the output |
---|
991 | lappend Sendqueue [list epoch $Epoch cmd $cmd bytes $data] |
---|
992 | fileevent $cout writable [list server_send $cout] |
---|
993 | } |
---|
994 | |
---|
995 | proc server_oops {cout mesg} { |
---|
996 | # remove newlines -- all lines must start with nv> |
---|
997 | set mesg [string map {\n " "} $mesg] |
---|
998 | server_send_result $cout "nv>oops [list $mesg]" |
---|
999 | } |
---|
1000 | |
---|
1001 | # ========================================================================= |
---|
1002 | |
---|
1003 | # turn off constant updates -- only need them during server_send_image |
---|
1004 | display update off |
---|
1005 | |
---|
1006 | # parse command line args |
---|
1007 | set Paradigm "socket" |
---|
1008 | while {[llength $argv] > 0} { |
---|
1009 | set opt [lindex $argv 0] |
---|
1010 | set argv [lrange $argv 1 end] |
---|
1011 | |
---|
1012 | switch -- $opt { |
---|
1013 | -socket { set Paradigm "socket" } |
---|
1014 | -stdio { set Paradigm "stdio" } |
---|
1015 | default { |
---|
1016 | puts stderr "bad option \"$opt\": should be -socket or -stdio" |
---|
1017 | } |
---|
1018 | } |
---|
1019 | } |
---|
1020 | |
---|
1021 | # use this to take snapshots to send to clients |
---|
1022 | image create photo SnapShot |
---|
1023 | |
---|
1024 | # set the screen to a good size |
---|
1025 | set DisplaySize(w) 300 |
---|
1026 | set DisplaySize(h) 300 |
---|
1027 | display resize $DisplaySize(w) $DisplaySize(h) |
---|
1028 | set DisplaySize(changed) 0 |
---|
1029 | |
---|
1030 | # capture initial display settings for later reset |
---|
1031 | display antialias on |
---|
1032 | |
---|
1033 | set DisplayProps(options) "" |
---|
1034 | foreach key { |
---|
1035 | ambientocclusion |
---|
1036 | antialias |
---|
1037 | aoambient |
---|
1038 | aodirect |
---|
1039 | backgroundgradient |
---|
1040 | cuedensity |
---|
1041 | cueend |
---|
1042 | cuemode |
---|
1043 | cuestart |
---|
1044 | culling |
---|
1045 | depthcue |
---|
1046 | distance |
---|
1047 | eyesep |
---|
1048 | farclip |
---|
1049 | focallength |
---|
1050 | height |
---|
1051 | nearclip |
---|
1052 | projection |
---|
1053 | shadows |
---|
1054 | stereo |
---|
1055 | } { |
---|
1056 | if {$key eq "nearclip" || $key eq "farclip"} { |
---|
1057 | append DisplayProps(options) [list display $key set [display get $key]] "\n" |
---|
1058 | } else { |
---|
1059 | append DisplayProps(options) [list display $key [display get $key]] "\n" |
---|
1060 | } |
---|
1061 | } |
---|
1062 | |
---|
1063 | # initialize work queue and epoch counter (see server_send_image) |
---|
1064 | set Epoch 0 |
---|
1065 | set Work(queue) "" |
---|
1066 | set Sendqueue "" |
---|
1067 | set Scenes(@CURRENT) "" |
---|
1068 | set tmpDir "" |
---|
1069 | |
---|
1070 | set parser [interp create -safe] |
---|
1071 | |
---|
1072 | $parser eval { |
---|
1073 | # Add unknown procedure to safe interpreter to handle generated |
---|
1074 | # instances (commands) of atom selections. |
---|
1075 | proc unknown { args } { |
---|
1076 | set cmd [lindex $args 0] |
---|
1077 | if { [regexp {atomselect[0-9]+} $cmd] } { |
---|
1078 | return [uplevel 1 [eval list atomselect_instance $args]] |
---|
1079 | } |
---|
1080 | return -code error "unknown command $args" |
---|
1081 | } |
---|
1082 | } |
---|
1083 | |
---|
1084 | foreach cmd { |
---|
1085 | axes |
---|
1086 | color |
---|
1087 | gettimestep |
---|
1088 | graphics |
---|
1089 | imd |
---|
1090 | label |
---|
1091 | vmd_label |
---|
1092 | light |
---|
1093 | material |
---|
1094 | measure |
---|
1095 | mobile |
---|
1096 | mol |
---|
1097 | molinfo |
---|
1098 | molecule |
---|
1099 | mouse |
---|
1100 | parallel |
---|
1101 | plugin |
---|
1102 | rawtimestep |
---|
1103 | render |
---|
1104 | rotate |
---|
1105 | rotmat |
---|
1106 | scale |
---|
1107 | vmd_scale |
---|
1108 | spaceball |
---|
1109 | stage |
---|
1110 | tkrender |
---|
1111 | tool |
---|
1112 | translate |
---|
1113 | user |
---|
1114 | vecadd |
---|
1115 | veccross |
---|
1116 | vecdist |
---|
1117 | vecdot |
---|
1118 | vecinvert |
---|
1119 | veclength |
---|
1120 | veclength2 |
---|
1121 | vecmean |
---|
1122 | vecmul |
---|
1123 | vecnorm |
---|
1124 | vecscale |
---|
1125 | vecscale |
---|
1126 | vecstddev |
---|
1127 | vecsub |
---|
1128 | vecsum |
---|
1129 | veczero |
---|
1130 | vmdcollab |
---|
1131 | vmdcon |
---|
1132 | vmdinfo |
---|
1133 | vmdbench |
---|
1134 | volmap |
---|
1135 | } { |
---|
1136 | $parser alias $cmd $cmd |
---|
1137 | } |
---|
1138 | |
---|
1139 | $parser alias animate Animate |
---|
1140 | $parser alias atomselect AtomSelect |
---|
1141 | $parser alias atomselect_instance AtomSelectInstance |
---|
1142 | $parser alias display Display |
---|
1143 | $parser alias drag Drag |
---|
1144 | $parser alias frames Frames |
---|
1145 | $parser alias getview GetView |
---|
1146 | $parser alias load Load |
---|
1147 | $parser alias menu NoOp |
---|
1148 | $parser alias play NoOp |
---|
1149 | $parser alias queryinfo QueryInfo |
---|
1150 | $parser alias quit NoOp |
---|
1151 | $parser alias resize Resize |
---|
1152 | $parser alias rock Rock |
---|
1153 | $parser alias scene Scene |
---|
1154 | $parser alias setquality SetQuality |
---|
1155 | $parser alias setview SetView |
---|
1156 | $parser alias sleep NoOp |
---|
1157 | $parser alias smoothreps SmoothReps |
---|
1158 | $parser alias tellme TellMe |
---|
1159 | $parser alias vmd_menu NoOp |
---|
1160 | |
---|
1161 | $parser alias set_temporary_directory SetTemporaryDirectory |
---|
1162 | |
---|
1163 | if {$Paradigm eq "socket"} { |
---|
1164 | socket -server server_accept 2018 |
---|
1165 | } else { |
---|
1166 | set cin $vmd_client(read) |
---|
1167 | set cout $vmd_client(write) |
---|
1168 | |
---|
1169 | fileevent $cin readable [list server_handle $cin $cout] |
---|
1170 | fconfigure $cout -buffering none -blocking 0 |
---|
1171 | } |
---|
1172 | |
---|
1173 | # vmd automatically drops into an event loop at this point... |
---|
1174 | # |
---|
1175 | # The VMD TCL interpreter is by default interactive. Their version |
---|
1176 | # of tkconsole always turns this on. Turn this off |
---|
1177 | # so that unknown commands like "scene" don't get exec-ed. |
---|
1178 | set ::tcl_interactive 0 |
---|