1 | # ---------------------------------------------------------------------- |
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2 | # COMPONENT: videoviewer - viewing movies |
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3 | # |
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4 | # ====================================================================== |
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5 | # AUTHOR: Michael McLennan, Purdue University |
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6 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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7 | # |
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8 | # See the file "license.terms" for information on usage and redistribution of |
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9 | # this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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10 | # ====================================================================== |
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11 | |
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12 | package require Itk |
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13 | package require BLT |
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14 | package require Img |
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15 | package require Rappture |
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16 | package require RapptureGUI |
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17 | |
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18 | option add *VideoViewer.width 5i widgetDefault |
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19 | option add *VideoViewer*cursor crosshair widgetDefault |
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20 | option add *VideoViewer.height 4i widgetDefault |
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21 | option add *VideoViewer.foreground black widgetDefault |
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22 | option add *VideoViewer.controlBackground gray widgetDefault |
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23 | option add *VideoViewer.controlDarkBackground #999999 widgetDefault |
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24 | option add *VideoViewer.plotBackground black widgetDefault |
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25 | option add *VideoViewer.plotForeground white widgetDefault |
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26 | option add *VideoViewer.plotOutline gray widgetDefault |
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27 | option add *VideoViewer.font \ |
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28 | -*-helvetica-medium-r-normal-*-12-* widgetDefault |
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29 | |
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30 | itcl::class Rappture::VideoViewer { |
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31 | inherit itk::Widget |
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32 | |
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33 | itk_option define -plotforeground plotForeground Foreground "" |
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34 | itk_option define -plotbackground plotBackground Background "" |
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35 | itk_option define -plotoutline plotOutline PlotOutline "" |
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36 | |
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37 | constructor { args } { |
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38 | # defined below |
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39 | } |
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40 | destructor { |
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41 | # defined below |
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42 | } |
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43 | |
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44 | public method load {filename} |
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45 | public method video {args} |
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46 | |
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47 | protected method togglePtrBind {pbvar} |
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48 | protected method togglePtrCtrl {pbvar} |
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49 | protected method whatPtrCtrl {} |
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50 | |
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51 | protected method Play {} |
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52 | protected method Seek {n} |
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53 | protected method Rubberband {status win x y} |
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54 | protected method Distance {status win x y} |
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55 | protected method Measure {status win x y} |
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56 | protected method Particle {status win x y} |
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57 | protected method Trajectory {args} |
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58 | protected method updateMeasurements {} |
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59 | protected method calculateTrajectory {args} |
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60 | |
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61 | private common _settings |
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62 | |
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63 | private variable _width 0 |
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64 | private variable _height 0 |
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65 | private variable _x0 0 ;# start x for rubberbanding |
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66 | private variable _y0 0 ;# start y for rubberbanding |
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67 | private variable _units "m" |
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68 | private variable _movie "" ;# movie we grab images from |
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69 | private variable _lastFrame 0 ;# last frame in the movie |
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70 | private variable _imh "" ;# current image being displayed |
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71 | private variable _id "" ;# id of the next play command from after |
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72 | private variable _pbvlist "" ;# list of push button variables |
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73 | private variable _px2dist 0 ;# conversion for screen px to distance |
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74 | private variable _measCnt 0 ;# count of the number measure lines |
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75 | private variable _measTags "" ;# list of measure line tags on canvas |
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76 | private variable _particles "" ;# list of particles |
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77 | private variable _pcnt -1 ;# particle count |
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78 | private variable _framerate 30 ;# video frame rate |
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79 | private variable _mspf 20 ;# milliseconds per frame wait time |
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80 | private variable _waiting 0 ;# number of frames behind we are |
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81 | } |
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82 | |
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83 | itk::usual VideoViewer { |
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84 | keep -background -foreground -cursor -font |
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85 | keep -plotbackground -plotforeground |
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86 | } |
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87 | |
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88 | # ---------------------------------------------------------------------- |
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89 | # CONSTRUCTOR |
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90 | # ---------------------------------------------------------------------- |
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91 | itcl::body Rappture::VideoViewer::constructor {args} { |
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92 | |
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93 | array set _settings [subst { |
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94 | $this-arrows 0 |
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95 | $this-currenttime 0 |
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96 | $this-framenum 0 |
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97 | $this-duration 1:00 |
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98 | $this-loop 0 |
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99 | $this-play 0 |
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100 | $this-speed 500 |
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101 | $this-step 0 |
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102 | }] |
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103 | |
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104 | # Create flow controls... |
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105 | |
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106 | itk_component add main { |
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107 | canvas $itk_interior.main \ |
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108 | -background black |
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109 | } { |
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110 | usual |
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111 | rename -background -controlbackground controlBackground Background |
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112 | } |
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113 | |
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114 | itk_component add pointercontrols { |
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115 | frame $itk_interior.pointercontrols |
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116 | } { |
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117 | usual |
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118 | rename -background -controlbackground controlBackground Background |
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119 | } |
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120 | |
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121 | |
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122 | itk_component add moviecontrols { |
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123 | frame $itk_interior.moviecontrols |
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124 | } { |
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125 | usual |
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126 | rename -background -controlbackground controlBackground Background |
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127 | } |
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128 | |
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129 | pack forget $itk_component(main) |
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130 | blt::table $itk_interior \ |
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131 | 0,0 $itk_component(pointercontrols) -fill x \ |
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132 | 1,0 $itk_component(main) -fill both \ |
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133 | 2,0 $itk_component(moviecontrols) -fill x |
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134 | # why do i have to explicitly say r0 and r2 instead of r* |
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135 | blt::table configure $itk_interior r0 -resize none |
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136 | blt::table configure $itk_interior r2 -resize none |
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137 | blt::table configure $itk_interior c0 -padx 1 |
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138 | |
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139 | |
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140 | # setup pointer controls |
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141 | |
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142 | set imagesDir [file join $RapptureGUI::library scripts images] |
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143 | |
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144 | # ==== rectangle select tool ==== |
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145 | set rectImg [image create photo -file [file join $imagesDir "rect_dashed_black.png"]] |
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146 | itk_component add rectangle { |
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147 | Rappture::PushButton $itk_component(pointercontrols).rectanglepb \ |
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148 | -onimage $rectImg \ |
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149 | -offimage $rectImg \ |
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150 | -command [itcl::code $this togglePtrCtrl rectPbVar] \ |
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151 | -variable rectPbVar |
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152 | } { |
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153 | usual |
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154 | } |
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155 | Rappture::Tooltip::for $itk_component(rectangle) \ |
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156 | "rectangle select tool" |
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157 | |
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158 | lappend _pbvlist rectPbVar |
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159 | |
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160 | # ==== distance specify tool ==== |
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161 | set distImg [image create photo -file [file join $imagesDir "line_darrow_red.png"]] |
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162 | itk_component add distance { |
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163 | Rappture::PushButton $itk_component(pointercontrols).distancepb \ |
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164 | -onimage $distImg \ |
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165 | -offimage $distImg \ |
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166 | -command [itcl::code $this togglePtrCtrl distPbVar] \ |
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167 | -variable distPbVar |
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168 | } { |
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169 | usual |
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170 | } |
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171 | Rappture::Tooltip::for $itk_component(distance) \ |
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172 | "Specify the distance of a structure" |
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173 | |
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174 | lappend _pbvlist distPbVar |
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175 | |
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176 | |
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177 | |
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178 | # ==== measuring tool ==== |
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179 | set measImg [image create photo -file [file join $imagesDir "line_darrow_green.png"]] |
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180 | itk_component add measure { |
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181 | Rappture::PushButton $itk_component(pointercontrols).measurepb \ |
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182 | -onimage $measImg \ |
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183 | -offimage $measImg \ |
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184 | -command [itcl::code $this togglePtrCtrl measPbVar] \ |
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185 | -variable measPbVar |
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186 | } { |
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187 | usual |
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188 | } |
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189 | Rappture::Tooltip::for $itk_component(measure) \ |
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190 | "Measure the distance of a structure" |
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191 | |
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192 | lappend _pbvlist measPbVar |
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193 | |
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194 | |
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195 | |
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196 | # ==== particle mark tool ==== |
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197 | set particleImg [image create photo -file [file join $imagesDir "volume-on.gif"]] |
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198 | itk_component add particle { |
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199 | Rappture::PushButton $itk_component(pointercontrols).particlepb \ |
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200 | -onimage $particleImg \ |
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201 | -offimage $particleImg \ |
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202 | -command [itcl::code $this togglePtrCtrl partPbVar] \ |
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203 | -variable partPbVar |
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204 | } { |
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205 | usual |
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206 | } |
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207 | Rappture::Tooltip::for $itk_component(particle) \ |
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208 | "Mark the location of a particle to follow" |
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209 | |
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210 | lappend _pbvlist partPbVar |
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211 | |
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212 | blt::table $itk_component(pointercontrols) \ |
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213 | 0,0 $itk_component(rectangle) -pady {3 0} \ |
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214 | 0,1 $itk_component(distance) -pady {3 0} \ |
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215 | 0,2 $itk_component(measure) -pady {3 0} \ |
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216 | 0,3 $itk_component(particle) -pady {3 0} |
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217 | |
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218 | blt::table configure $itk_component(pointercontrols) c* -resize none |
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219 | blt::table configure $itk_component(pointercontrols) r* -resize none |
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220 | |
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221 | |
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222 | # setup movie controls |
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223 | |
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224 | # Rewind |
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225 | itk_component add rewind { |
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226 | button $itk_component(moviecontrols).reset \ |
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227 | -borderwidth 1 -padx 1 -pady 1 \ |
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228 | -image [Rappture::icon flow-rewind] \ |
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229 | -command [itcl::code $this video seek 0] |
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230 | } { |
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231 | usual |
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232 | ignore -borderwidth |
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233 | rename -highlightbackground -controlbackground controlBackground \ |
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234 | Background |
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235 | } |
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236 | Rappture::Tooltip::for $itk_component(rewind) \ |
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237 | "Rewind movie" |
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238 | |
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239 | # Stop |
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240 | itk_component add stop { |
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241 | button $itk_component(moviecontrols).stop \ |
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242 | -borderwidth 1 -padx 1 -pady 1 \ |
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243 | -image [Rappture::icon flow-stop] \ |
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244 | -command [itcl::code $this video stop] |
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245 | } { |
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246 | usual |
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247 | ignore -borderwidth |
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248 | rename -highlightbackground -controlbackground controlBackground \ |
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249 | Background |
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250 | } |
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251 | Rappture::Tooltip::for $itk_component(stop) \ |
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252 | "Stop movie" |
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253 | |
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254 | # Play |
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255 | itk_component add play { |
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256 | Rappture::PushButton $itk_component(moviecontrols).play \ |
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257 | -onimage [Rappture::icon flow-pause] \ |
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258 | -offimage [Rappture::icon flow-play] \ |
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259 | -variable [itcl::scope _settings($this-play)] \ |
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260 | -command [itcl::code $this video play] |
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261 | } |
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262 | set fg [option get $itk_component(hull) font Font] |
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263 | Rappture::Tooltip::for $itk_component(play) \ |
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264 | "Play/Pause movie" |
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265 | |
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266 | # Loop |
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267 | itk_component add loop { |
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268 | Rappture::PushButton $itk_component(moviecontrols).loop \ |
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269 | -onimage [Rappture::icon flow-loop] \ |
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270 | -offimage [Rappture::icon flow-loop] \ |
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271 | -variable [itcl::scope _settings($this-loop)] |
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272 | } |
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273 | Rappture::Tooltip::for $itk_component(loop) \ |
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274 | "Play continuously" |
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275 | |
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276 | itk_component add dial { |
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277 | Rappture::Flowdial $itk_component(moviecontrols).dial \ |
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278 | -length 10 -valuewidth 0 -valuepadding 0 -padding 6 \ |
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279 | -linecolor "" -activelinecolor "" \ |
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280 | -min 0.0 -max 1.0 \ |
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281 | -variable [itcl::scope _settings($this-currenttime)] \ |
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282 | -knobimage [Rappture::icon knob2] -knobposition center@middle |
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283 | } { |
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284 | usual |
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285 | ignore -dialprogresscolor |
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286 | rename -background -controlbackground controlBackground Background |
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287 | } |
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288 | $itk_component(dial) current 0.0 |
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289 | bind $itk_component(dial) <<Value>> [itcl::code $this video seek -currenttime] |
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290 | |
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291 | # Current Frame Number |
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292 | itk_component add framenum { |
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293 | Rappture::Spinint $itk_component(moviecontrols).framenum \ |
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294 | -min 1 -max 1 -width 1 -font "arial 9" |
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295 | } { |
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296 | usual |
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297 | ignore -highlightthickness |
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298 | rename -background -controlbackground controlBackground Background |
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299 | } |
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300 | $itk_component(framenum) value 1 |
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301 | bind $itk_component(framenum) <<Value>> \ |
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302 | [itcl::code $this video seek -framenum] |
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303 | Rappture::Tooltip::for $itk_component(framenum) \ |
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304 | "Set the current frame number" |
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305 | |
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306 | |
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307 | # Duration |
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308 | itk_component add duration { |
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309 | entry $itk_component(moviecontrols).duration \ |
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310 | -textvariable [itcl::scope _settings($this-duration)] \ |
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311 | -bg white -width 6 -font "arial 9" |
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312 | } { |
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313 | usual |
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314 | ignore -highlightthickness -background |
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315 | } |
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316 | bind $itk_component(duration) <Return> [itcl::code $this flow duration] |
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317 | bind $itk_component(duration) <Tab> [itcl::code $this flow duration] |
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318 | Rappture::Tooltip::for $itk_component(duration) \ |
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319 | "Set duration of movie (format is min:sec)" |
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320 | |
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321 | |
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322 | itk_component add durationlabel { |
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323 | label $itk_component(moviecontrols).durationl \ |
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324 | -text "Duration:" -font $fg \ |
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325 | -highlightthickness 0 |
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326 | } { |
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327 | usual |
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328 | ignore -highlightthickness |
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329 | rename -background -controlbackground controlBackground Background |
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330 | } |
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331 | |
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332 | itk_component add speedlabel { |
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333 | label $itk_component(moviecontrols).speedl -text "Speed:" -font $fg \ |
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334 | -highlightthickness 0 |
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335 | } { |
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336 | usual |
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337 | ignore -highlightthickness |
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338 | rename -background -controlbackground controlBackground Background |
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339 | } |
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340 | |
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341 | # Speed |
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342 | itk_component add speed { |
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343 | Rappture::Flowspeed $itk_component(moviecontrols).speed \ |
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344 | -min 1 -max 10 -width 3 -font "arial 9" |
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345 | } { |
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346 | usual |
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347 | ignore -highlightthickness |
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348 | rename -background -controlbackground controlBackground Background |
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349 | } |
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350 | Rappture::Tooltip::for $itk_component(speed) \ |
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351 | "Change speed of movie" |
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352 | |
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353 | $itk_component(speed) value 1 |
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354 | bind $itk_component(speed) <<Value>> [itcl::code $this video speed] |
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355 | |
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356 | |
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357 | blt::table $itk_component(moviecontrols) \ |
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358 | 0,0 $itk_component(rewind) -padx {3 0} \ |
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359 | 0,1 $itk_component(stop) -padx {2 0} \ |
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360 | 0,2 $itk_component(play) -padx {2 0} \ |
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361 | 0,3 $itk_component(loop) -padx {2 0} \ |
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362 | 0,4 $itk_component(dial) -fill x -padx {2 0 } \ |
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363 | 0,5 $itk_component(framenum) -padx { 0 0} \ |
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364 | 0,6 $itk_component(duration) -padx { 0 0} \ |
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365 | 0,7 $itk_component(speed) -padx {2 3} |
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366 | |
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367 | blt::table configure $itk_component(moviecontrols) c* -resize none |
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368 | blt::table configure $itk_component(moviecontrols) c4 -resize both |
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369 | blt::table configure $itk_component(moviecontrols) r0 -pady 1 |
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370 | |
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371 | itk_component add distGauge { |
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372 | Rappture::Gauge $itk_interior.distGauge \ |
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373 | -units "m" |
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374 | } { |
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375 | usual |
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376 | rename -background -controlbackground controlBackground Background |
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377 | } |
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378 | Rappture::Tooltip::for $itk_component(distGauge) \ |
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379 | "Length of structure" |
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380 | |
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381 | bind $itk_component(distGauge) <<Value>> [itcl::code $this updateMeasurements] |
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382 | |
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383 | eval itk_initialize $args |
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384 | } |
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385 | |
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386 | # ---------------------------------------------------------------------- |
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387 | # DESTRUCTOR |
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388 | # ---------------------------------------------------------------------- |
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389 | itcl::body Rappture::VideoViewer::destructor {} { |
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390 | set _sendobjs "" ;# stop any send in progress |
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391 | $_dispatcher cancel !rebuild |
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392 | $_dispatcher cancel !send_dataobjs |
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393 | $_dispatcher cancel !send_transfunc |
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394 | array unset _settings $this-* |
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395 | } |
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396 | |
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397 | # ---------------------------------------------------------------------- |
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398 | # load - load a video file |
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399 | # ---------------------------------------------------------------------- |
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400 | itcl::body Rappture::VideoViewer::load {filename} { |
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401 | set _movie [Rappture::Video $filename] |
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402 | set _framerate [${_movie} get framerate] |
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403 | set _mspf [expr round(((1.0/${_framerate})*1000)/pow(2,[$itk_component(speed) value]-1))] |
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404 | # set _mspf 7 |
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405 | puts "framerate = ${_framerate}" |
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406 | puts "mspf = ${_mspf}" |
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407 | |
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408 | set _imh [image create photo] |
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409 | $_imh put [$_movie next] |
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410 | $itk_component(main) create image 0 0 -anchor nw -image $_imh |
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411 | |
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412 | set _lastFrame [$_movie get position end] |
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413 | set offset [expr 1.0/double(${_lastFrame})] |
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414 | puts "end = ${_lastFrame}" |
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415 | puts "offset = $offset" |
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416 | $itk_component(dial) configure -offset $offset |
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417 | |
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418 | set lcv ${_lastFrame} |
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419 | set cnt 1 |
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420 | while {$lcv > 9} { |
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421 | set lcv [expr $lcv/10] |
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422 | incr cnt |
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423 | } |
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424 | $itk_component(framenum) configure -max ${_lastFrame} -width $cnt |
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425 | |
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426 | set pch [$itk_component(pointercontrols) cget -height] |
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427 | set mch [$itk_component(moviecontrols) cget -height] |
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428 | set pch 30 |
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429 | set mch 30 |
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430 | $itk_component(main) configure -scrollregion [$itk_component(main) bbox all] |
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431 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox all] break |
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432 | set w [expr abs($x1-$x0)] |
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433 | set h [expr abs($y1-$y0+$pch+$mch)] |
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434 | # $itk_component(main) configure -width $w -height $h |
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435 | .main configure -width $w -height $h |
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436 | |
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437 | } |
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438 | |
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439 | # ---------------------------------------------------------------------- |
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440 | # video - play, stop, rewind, fastforward the video |
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441 | # ---------------------------------------------------------------------- |
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442 | itcl::body Rappture::VideoViewer::video { args } { |
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443 | set ret 0 |
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444 | set option [lindex $args 0] |
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445 | switch -- $option { |
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446 | "play" { |
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447 | if {$_settings($this-play) == 1} { |
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448 | # while in play move, you can't seek using the |
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449 | # framenum spinint widget |
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450 | bind $itk_component(framenum) <<Value>> "" |
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451 | # start playing |
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452 | Play |
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453 | } else { |
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454 | # pause |
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455 | after cancel $_id |
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456 | set _settings($this-play) 0 |
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457 | # setup seek bindings using the |
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458 | # framenum spinint widget |
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459 | bind $itk_component(framenum) <<Value>> \ |
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460 | [itcl::code $this video seek -framenum] |
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461 | } |
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462 | } |
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463 | "seek" { |
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464 | Seek [lreplace $args 0 0] |
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465 | } |
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466 | "stop" { |
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467 | after cancel $_id |
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468 | set _settings($this-play) 0 |
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469 | } |
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470 | "position" { |
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471 | set ret [${_movie} get position cur] |
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472 | } |
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473 | "speed" { |
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474 | set _mspf [expr round(((1.0/${_framerate})*1000)/pow(2,[$itk_component(speed) value]-1))] |
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475 | puts "_mspf = ${_mspf}" |
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476 | } |
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477 | default { |
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478 | error "bad option \"$option\": should be play, stop, toggle, position, or reset." |
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479 | } |
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480 | } |
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481 | return $ret |
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482 | } |
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483 | |
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484 | # ---------------------------------------------------------------------- |
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485 | # togglePtrCtrl - choose pointer mode: |
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486 | # rectangle, distance, measure, particlemark |
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487 | # ---------------------------------------------------------------------- |
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488 | itcl::body Rappture::VideoViewer::togglePtrCtrl {pbvar} { |
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489 | |
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490 | upvar 1 $pbvar inState |
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491 | puts "togglePtrCtrl to $pbvar" |
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492 | if {$inState == 1} { |
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493 | # unpush previously pushed buttons |
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494 | foreach pbv $_pbvlist { |
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495 | if {[string compare $pbvar $pbv] != 0} { |
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496 | upvar 1 $pbv var |
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497 | set var 0 |
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498 | } |
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499 | } |
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500 | } |
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501 | togglePtrBind $pbvar |
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502 | } |
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503 | |
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504 | |
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505 | # ---------------------------------------------------------------------- |
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506 | # whatPtrCtrl - figure out the current pointer mode: |
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507 | # rectangle, distance, measure, particlemark |
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508 | # ---------------------------------------------------------------------- |
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509 | itcl::body Rappture::VideoViewer::whatPtrCtrl {} { |
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510 | foreach pbv $_pbvlist { |
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511 | upvar #0 $pbv var |
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512 | if {$var != "" && $var != 0} { |
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513 | return $pbv |
---|
514 | } |
---|
515 | } |
---|
516 | } |
---|
517 | |
---|
518 | |
---|
519 | # ---------------------------------------------------------------------- |
---|
520 | # togglePtrBind - update the bindings based on pointer controls |
---|
521 | # ---------------------------------------------------------------------- |
---|
522 | itcl::body Rappture::VideoViewer::togglePtrBind {pbvar} { |
---|
523 | |
---|
524 | if {[string compare $pbvar current] == 0} { |
---|
525 | set pbvar [whatPtrCtrl] |
---|
526 | } |
---|
527 | |
---|
528 | if {[string compare $pbvar rectPbVar] == 0} { |
---|
529 | |
---|
530 | # Bindings for selecting rectangle |
---|
531 | $itk_component(main) configure -cursor "" |
---|
532 | |
---|
533 | bind $itk_component(main) <ButtonPress-1> \ |
---|
534 | [itcl::code $this Rubberband new %W %x %y] |
---|
535 | bind $itk_component(main) <B1-Motion> \ |
---|
536 | [itcl::code $this Rubberband drag %W %x %y] |
---|
537 | bind $itk_component(main) <ButtonRelease-1> \ |
---|
538 | [itcl::code $this Rubberband release %W %x %y] |
---|
539 | |
---|
540 | } elseif {[string compare $pbvar distPbVar] == 0} { |
---|
541 | |
---|
542 | # Bindings for setting distance |
---|
543 | $itk_component(main) configure -cursor "" |
---|
544 | |
---|
545 | bind $itk_component(main) <ButtonPress-1> \ |
---|
546 | [itcl::code $this Distance new %W %x %y] |
---|
547 | bind $itk_component(main) <B1-Motion> \ |
---|
548 | [itcl::code $this Distance drag %W %x %y] |
---|
549 | bind $itk_component(main) <ButtonRelease-1> \ |
---|
550 | [itcl::code $this Distance release %W %x %y] |
---|
551 | |
---|
552 | } elseif {[string compare $pbvar measPbVar] == 0} { |
---|
553 | |
---|
554 | # Bindings for measuring distance |
---|
555 | $itk_component(main) configure -cursor "" |
---|
556 | |
---|
557 | bind $itk_component(main) <ButtonPress-1> \ |
---|
558 | [itcl::code $this Measure new %W %x %y] |
---|
559 | bind $itk_component(main) <B1-Motion> \ |
---|
560 | [itcl::code $this Measure drag %W %x %y] |
---|
561 | bind $itk_component(main) <ButtonRelease-1> \ |
---|
562 | [itcl::code $this Measure release %W %x %y] |
---|
563 | |
---|
564 | } elseif {[string compare $pbvar partPbVar] == 0} { |
---|
565 | |
---|
566 | # Bindings for marking particle locations |
---|
567 | $itk_component(main) configure -cursor "" |
---|
568 | |
---|
569 | bind $itk_component(main) <ButtonPress-1> \ |
---|
570 | [itcl::code $this Particle new %W %x %y] |
---|
571 | bind $itk_component(main) <B1-Motion> "" |
---|
572 | bind $itk_component(main) <ButtonRelease-1> "" |
---|
573 | |
---|
574 | } elseif {[string compare $pbvar particle] == 0} { |
---|
575 | |
---|
576 | # Bindings for interacting with particles |
---|
577 | $itk_component(main) configure -cursor hand2 |
---|
578 | |
---|
579 | bind $itk_component(main) <ButtonPress-1> "" |
---|
580 | bind $itk_component(main) <B1-Motion> "" |
---|
581 | bind $itk_component(main) <ButtonRelease-1> "" |
---|
582 | |
---|
583 | } else { |
---|
584 | |
---|
585 | # invalid pointer mode |
---|
586 | |
---|
587 | } |
---|
588 | } |
---|
589 | |
---|
590 | |
---|
591 | # ---------------------------------------------------------------------- |
---|
592 | # play - get the next video frame |
---|
593 | # ---------------------------------------------------------------------- |
---|
594 | itcl::body Rappture::VideoViewer::Play {} { |
---|
595 | |
---|
596 | set cur [$_movie get position cur] |
---|
597 | |
---|
598 | # # this probably is incorrect because other people |
---|
599 | # # could schedule stuff in the after queue |
---|
600 | # if {[llength [after info]] > 1} { |
---|
601 | # # drop frames that get caught up in the "after queue" |
---|
602 | # # in order to keep up with the frame rate |
---|
603 | # #foreach i [after info] { |
---|
604 | # # after cancel $i |
---|
605 | # #} |
---|
606 | # incr _waiting |
---|
607 | # } else { |
---|
608 | # # display the next frame |
---|
609 | # $_imh put [$_movie seek +[incr _waiting]] |
---|
610 | # set _waiting 0 |
---|
611 | # |
---|
612 | # # update the dial and framenum widgets |
---|
613 | # set _settings($this-currenttime) [expr 1.0*$cur/${_lastFrame}] |
---|
614 | # $itk_component(framenum) value $cur |
---|
615 | # |
---|
616 | # } |
---|
617 | |
---|
618 | # display the next frame |
---|
619 | $_imh put [$_movie next] |
---|
620 | |
---|
621 | # update the dial and framenum widgets |
---|
622 | set _settings($this-currenttime) [expr 1.0*$cur/${_lastFrame}] |
---|
623 | $itk_component(framenum) value $cur |
---|
624 | |
---|
625 | if {[expr $cur%100] == 0} { |
---|
626 | puts "after: [after info]" |
---|
627 | puts "id = ${_id}" |
---|
628 | } |
---|
629 | |
---|
630 | # schedule the next frame to be displayed |
---|
631 | if {$cur < ${_lastFrame}} { |
---|
632 | set _id [after ${_mspf} [itcl::code $this Play]] |
---|
633 | } |
---|
634 | } |
---|
635 | |
---|
636 | |
---|
637 | # ---------------------------------------------------------------------- |
---|
638 | # Seek - go to a frame in the video video frame |
---|
639 | # Seek -percent 43 |
---|
640 | # Seek -percent 0.5 |
---|
641 | # Seek +5 |
---|
642 | # Seek -5 |
---|
643 | # Seek 35 |
---|
644 | # Seek -currenttime |
---|
645 | # Seek -framenum |
---|
646 | # ---------------------------------------------------------------------- |
---|
647 | itcl::body Rappture::VideoViewer::Seek {args} { |
---|
648 | set option [lindex $args 0] |
---|
649 | switch -- $option { |
---|
650 | "-percent" { |
---|
651 | set val [lindex $args 1] |
---|
652 | if {[string is integer -strict $val] == 1} { |
---|
653 | set val [expr double($val) / 100.0] |
---|
654 | } |
---|
655 | # convert the percentage to a frame number (new cur) |
---|
656 | set val [expr int($val * ${_lastFrame})] |
---|
657 | } |
---|
658 | "-currenttime" { |
---|
659 | set val $_settings($this-currenttime) |
---|
660 | set val [expr round($val * ${_lastFrame})] |
---|
661 | } |
---|
662 | "-framenum" { |
---|
663 | set val [$itk_component(framenum) value] |
---|
664 | } |
---|
665 | default { |
---|
666 | set val $option |
---|
667 | } |
---|
668 | } |
---|
669 | if {"" == $val} { |
---|
670 | error "bad value: \"$val\": should be \"seek \[-percent\] value\"" |
---|
671 | } |
---|
672 | $_imh put [$_movie seek $val] |
---|
673 | set cur [$_movie get position cur] |
---|
674 | set _settings($this-currenttime) [expr double($cur) / double(${_lastFrame})] |
---|
675 | } |
---|
676 | |
---|
677 | |
---|
678 | # ---------------------------------------------------------------------- |
---|
679 | # Rubberband - draw a rubberband around something in the canvas |
---|
680 | # ---------------------------------------------------------------------- |
---|
681 | itcl::body Rappture::VideoViewer::Rubberband {status win x y} { |
---|
682 | switch -- $status { |
---|
683 | "new" { |
---|
684 | $win delete "rubbershape" |
---|
685 | set _x0 $x |
---|
686 | set _y0 $y |
---|
687 | $win create rectangle \ |
---|
688 | $x $y $x $y -outline white -width 2 \ |
---|
689 | -tags "rubbershape" -dash {4 4} |
---|
690 | } |
---|
691 | "drag" { |
---|
692 | foreach { x0 y0 x1 y1 } [$win coords "rubbershape"] break |
---|
693 | |
---|
694 | if {$_x0 > $x} { |
---|
695 | # backward direction |
---|
696 | set x0 $x |
---|
697 | set x1 $_x0 |
---|
698 | } else { |
---|
699 | set x1 $x |
---|
700 | } |
---|
701 | |
---|
702 | if {$_y0 >= $y} { |
---|
703 | # backward direction |
---|
704 | set y0 $y |
---|
705 | set y1 $_y0 |
---|
706 | } else { |
---|
707 | set y1 $y |
---|
708 | } |
---|
709 | |
---|
710 | eval $win coords "rubbershape" [list $x0 $y0 $x1 $y1] |
---|
711 | } |
---|
712 | "release" { |
---|
713 | Rubberband drag $win $x $y |
---|
714 | } |
---|
715 | default { |
---|
716 | error "bad status \"$status\": should be new, drag, or release" |
---|
717 | } |
---|
718 | } |
---|
719 | } |
---|
720 | |
---|
721 | # ---------------------------------------------------------------------- |
---|
722 | # updateMeasurements - update measurements based on provided distance |
---|
723 | # ---------------------------------------------------------------------- |
---|
724 | itcl::body Rappture::VideoViewer::updateMeasurements {} { |
---|
725 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox "distance"] break |
---|
726 | set px [expr sqrt(pow(($x1-$x0),2)+pow(($y1-$y0),2))] |
---|
727 | set dist [Rappture::Units::convert [$itk_component(distGauge) value] -units off] |
---|
728 | set px2dist [expr $dist/$px] |
---|
729 | if {$px2dist != ${_px2dist}} { |
---|
730 | set _px2dist $px2dist |
---|
731 | } |
---|
732 | |
---|
733 | # if measure lines exist, update their values |
---|
734 | foreach tag ${_measTags} { |
---|
735 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox $tag] break |
---|
736 | set px [expr sqrt(pow(($x1-$x0),2)+pow(($y1-$y0),2))] |
---|
737 | set dist [expr $px*${_px2dist}] |
---|
738 | regexp {measure(\d+)} $tag match cnt |
---|
739 | $itk_component(measGauge$cnt) value $dist |
---|
740 | } |
---|
741 | } |
---|
742 | |
---|
743 | # ---------------------------------------------------------------------- |
---|
744 | # Distance - draw a line to measure something on the canvas, |
---|
745 | # when user releases the line, user is prompted for |
---|
746 | # a measurement which is stored and used as the bases |
---|
747 | # for future distance calculations. |
---|
748 | # ---------------------------------------------------------------------- |
---|
749 | itcl::body Rappture::VideoViewer::Distance {status win x y} { |
---|
750 | switch -- $status { |
---|
751 | "new" { |
---|
752 | $win delete "distance" |
---|
753 | $win delete "distance-val" |
---|
754 | $win create line \ |
---|
755 | $x $y $x $y -fill red -width 2 \ |
---|
756 | -tags "distance" -dash {4 4} -arrow both |
---|
757 | } |
---|
758 | "drag" { |
---|
759 | set coords [$win coords "distance"] |
---|
760 | eval $win coords "distance" [lreplace $coords 2 3 $x $y] |
---|
761 | } |
---|
762 | "release" { |
---|
763 | Distance drag $win $x $y |
---|
764 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox "distance"] break |
---|
765 | set rootx [winfo rootx $itk_component(main)] |
---|
766 | set rooty [winfo rooty $itk_component(main)] |
---|
767 | set x [expr "$x0 + (abs($x1-$x0)/2)"] |
---|
768 | set y [expr "$y0 + (abs($y1-$y0)/2)"] |
---|
769 | $itk_component(main) create window $x $y \ |
---|
770 | -window $itk_component(distGauge) \ |
---|
771 | -anchor center \ |
---|
772 | -tags "distance-val" |
---|
773 | } |
---|
774 | default { |
---|
775 | error "bad status \"$status\": should be new, drag, or release" |
---|
776 | } |
---|
777 | } |
---|
778 | } |
---|
779 | # ---------------------------------------------------------------------- |
---|
780 | # Measure - draw a line to measure something on the canvas, |
---|
781 | # when user releases the line, user is given the |
---|
782 | # calculated measurement. |
---|
783 | # ---------------------------------------------------------------------- |
---|
784 | itcl::body Rappture::VideoViewer::Measure {status win x y} { |
---|
785 | switch -- $status { |
---|
786 | "new" { |
---|
787 | $win delete "measure" |
---|
788 | $win create line \ |
---|
789 | $x $y $x $y -fill green -width 2 \ |
---|
790 | -tags "measure" -dash {4 4} -arrow both |
---|
791 | } |
---|
792 | "drag" { |
---|
793 | set coords [$win coords "measure"] |
---|
794 | eval $win coords "measure" [lreplace $coords 2 3 $x $y] |
---|
795 | } |
---|
796 | "release" { |
---|
797 | # finish drawing the measuring line |
---|
798 | Measure drag $win $x $y |
---|
799 | |
---|
800 | # calculate the location on the measuring line to place gauge |
---|
801 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox "measure"] break |
---|
802 | puts "bbox for $_measCnt is ($x0,$y0) ($x1,$y1)" |
---|
803 | set rootx [winfo rootx $itk_component(main)] |
---|
804 | set rooty [winfo rooty $itk_component(main)] |
---|
805 | set x [expr "$x0 + (abs($x1-$x0)/2)"] |
---|
806 | set y [expr "$y0 + (abs($y1-$y0)/2)"] |
---|
807 | |
---|
808 | # set popup ".measure$_measCnt-popup" |
---|
809 | # if { ![winfo exists $popup] } { |
---|
810 | # # Create a popup for the measure line dialog |
---|
811 | # Rappture::Balloon $popup -title "Configure measurement..." |
---|
812 | # set inner [$popup component inner] |
---|
813 | # # Create the print dialog widget and add it to the |
---|
814 | # # the balloon popup. |
---|
815 | # Rappture::XyPrint $inner.print- |
---|
816 | # $popup configure \ |
---|
817 | # -deactivatecommand [list $inner.print reset]- |
---|
818 | # blt::table $inner 0,0 $inner.print -fill both |
---|
819 | # } |
---|
820 | # |
---|
821 | # |
---|
822 | # create a new gauge for this measuring line |
---|
823 | itk_component add measGauge$_measCnt { |
---|
824 | Rappture::Gauge $itk_interior.measGauge$_measCnt \ |
---|
825 | -units "m" |
---|
826 | } { |
---|
827 | usual |
---|
828 | rename -background -controlbackground controlBackground Background |
---|
829 | } |
---|
830 | Rappture::Tooltip::for $itk_component(measGauge$_measCnt) \ |
---|
831 | "Length of structure $_measCnt" |
---|
832 | |
---|
833 | # place the gauge on the measuring line |
---|
834 | $itk_component(main) create window $x $y \ |
---|
835 | -window $itk_component(measGauge$_measCnt) \ |
---|
836 | -anchor center \ |
---|
837 | -tags "measure$_measCnt-val" |
---|
838 | |
---|
839 | # set the value of the gauge with the calculated distance |
---|
840 | set px [expr sqrt(pow(($x1-$x0),2)+pow(($y1-$y0),2))] |
---|
841 | set dist [expr $px*$_px2dist] |
---|
842 | $itk_component(measGauge$_measCnt) value $dist |
---|
843 | |
---|
844 | # rename the tag for the line |
---|
845 | # so we can have multiple measure lines |
---|
846 | # store tag name for future value updates |
---|
847 | $itk_component(main) addtag "measure$_measCnt" withtag "measure" |
---|
848 | $itk_component(main) dtag "measure" "measure" |
---|
849 | lappend _measTags "measure$_measCnt" |
---|
850 | incr _measCnt |
---|
851 | } |
---|
852 | default { |
---|
853 | error "bad status \"$status\": should be new, drag, or release" |
---|
854 | } |
---|
855 | } |
---|
856 | } |
---|
857 | |
---|
858 | # ---------------------------------------------------------------------- |
---|
859 | # Particle - mark a particle in the video, a new particle object is |
---|
860 | # created from information like the name, which video |
---|
861 | # frames it lives in, it's coords in the canvas in each |
---|
862 | # frame, it's color... |
---|
863 | # ---------------------------------------------------------------------- |
---|
864 | itcl::body Rappture::VideoViewer::Particle {status win x y} { |
---|
865 | switch -- $status { |
---|
866 | "new" { |
---|
867 | incr _pcnt |
---|
868 | puts "pcnt = ${_pcnt}" |
---|
869 | set name "particle${_pcnt}" |
---|
870 | set p [Rappture::VideoParticle $itk_component(main).#auto $win \ |
---|
871 | -fncallback [itcl::code $this video position cur] \ |
---|
872 | -trajcallback [itcl::code $this Trajectory] \ |
---|
873 | -halo 5 \ |
---|
874 | -name $name \ |
---|
875 | -color green] |
---|
876 | set frameNum [$_movie get position cur] |
---|
877 | $p Add frame $frameNum $x $y |
---|
878 | $p Show particle |
---|
879 | |
---|
880 | # link the new particle to the last particle added |
---|
881 | set lastp "" |
---|
882 | while {[llength ${_particles}] > 0} { |
---|
883 | set lastp [lindex ${_particles} end] |
---|
884 | if {[llength [$lastp Coords]] != 0} { |
---|
885 | break |
---|
886 | } else { |
---|
887 | set _particles [lreplace ${_particles} end end] |
---|
888 | set lastp "" |
---|
889 | } |
---|
890 | } |
---|
891 | |
---|
892 | if {[string compare "" $lastp] != 0} { |
---|
893 | $lastp Link $p |
---|
894 | bind $lastp <<Motion>> [itcl::code $lastp drawVectors]] |
---|
895 | } |
---|
896 | |
---|
897 | |
---|
898 | # add the particle to the list |
---|
899 | lappend _particles $p |
---|
900 | |
---|
901 | $win bind $name <ButtonPress-1> [itcl::code $p Move press %x %y] |
---|
902 | $win bind $name <B1-Motion> [itcl::code $p Move motion %x %y] |
---|
903 | $win bind $name <ButtonRelease-1> [itcl::code $p Move release %x %y] |
---|
904 | |
---|
905 | $win bind $name <ButtonPress-3> [itcl::code $p Menu activate %x %y] |
---|
906 | |
---|
907 | $win bind $name <Enter> [itcl::code $this togglePtrBind particle] |
---|
908 | $win bind $name <Leave> [itcl::code $this togglePtrBind current] |
---|
909 | |
---|
910 | # set pm [Rappture::VideoParticleManager] |
---|
911 | # $pm add $p0 |
---|
912 | # set plist [$pm list] |
---|
913 | } |
---|
914 | default { |
---|
915 | error "bad status \"$status\": should be new, drag, or release" |
---|
916 | } |
---|
917 | } |
---|
918 | } |
---|
919 | |
---|
920 | # ---------------------------------------------------------------------- |
---|
921 | # Trajectory - draw a trajectory between two particles |
---|
922 | # ---------------------------------------------------------------------- |
---|
923 | itcl::body Rappture::VideoViewer::Trajectory {args} { |
---|
924 | |
---|
925 | set nargs [llength $args] |
---|
926 | if {($nargs != 1) && ($nargs != 2)} { |
---|
927 | error "wrong # args: should be \"Trajectory p0 p1\"" |
---|
928 | } |
---|
929 | |
---|
930 | set p0 "" |
---|
931 | set p1 "" |
---|
932 | foreach {p0 p1} $args break |
---|
933 | |
---|
934 | if {[string compare "" $p0] == 0} { |
---|
935 | # p0 does not exist |
---|
936 | return |
---|
937 | } |
---|
938 | |
---|
939 | # remove any old trajectory links from p0 |
---|
940 | set p0name [$p0 cget -name] |
---|
941 | set oldlink "vec-$p0name" |
---|
942 | puts "removing $oldlink" |
---|
943 | $itk_component(main) delete $oldlink |
---|
944 | |
---|
945 | # check to see if p1 exists anymore |
---|
946 | if {[string compare "" $p1] == 0} { |
---|
947 | # p1 does not exist |
---|
948 | return |
---|
949 | } |
---|
950 | |
---|
951 | foreach {x0 y0} [$p0 Coords] break |
---|
952 | foreach {x1 y1} [$p1 Coords] break |
---|
953 | set p1name [$p1 cget -name] |
---|
954 | set link "vec-$p0name-$p1name" |
---|
955 | puts "adding $link" |
---|
956 | $itk_component(main) create line $x0 $y0 $x1 $y1 \ |
---|
957 | -fill green \ |
---|
958 | -width 2 \ |
---|
959 | -tags "vector $link vec-$p0name" \ |
---|
960 | -dash {4 4} \ |
---|
961 | -arrow last |
---|
962 | |
---|
963 | # calculate trajectory, truncate it after 4 sigdigs |
---|
964 | puts "---------$link---------" |
---|
965 | set t [calculateTrajectory [$p0 Frame] $x0 $y0 [$p1 Frame] $x1 $y1] |
---|
966 | set tt [string range $t 0 [expr [string first . $t] + 4]] |
---|
967 | |
---|
968 | |
---|
969 | # calculate coords for text |
---|
970 | foreach { x0 y0 x1 y1 } [$itk_component(main) bbox $link] break |
---|
971 | set x [expr "$x0 + (abs($x1-$x0)/2)"] |
---|
972 | set y [expr "$y0 + (abs($y1-$y0)/2)"] |
---|
973 | |
---|
974 | $itk_component(main) create text $x $y \ |
---|
975 | -tags "vectext $link vec-$p0name" \ |
---|
976 | -justify center \ |
---|
977 | -text "$tt [$itk_component(distGauge) cget -units]/s" \ |
---|
978 | -fill green \ |
---|
979 | -width [expr sqrt(pow(abs($x1-$x0),2)+pow(abs($y1-$y0),2))] |
---|
980 | } |
---|
981 | |
---|
982 | # ---------------------------------------------------------------------- |
---|
983 | # calculateTrajectory - calculate the value of the trajectory |
---|
984 | # ---------------------------------------------------------------------- |
---|
985 | itcl::body Rappture::VideoViewer::calculateTrajectory {args} { |
---|
986 | # set framerate 29.97 ;# frames per second |
---|
987 | # set px2dist 8.00 ;# px per meter |
---|
988 | |
---|
989 | foreach {f0 x0 y0 f1 x1 y1} $args break |
---|
990 | set px [expr sqrt(pow(abs($x1-$x0),2)+pow(abs($y1-$y0),2))] |
---|
991 | set frames [expr $f1 - $f0] |
---|
992 | |
---|
993 | if {($frames != 0) && (${_px2dist} != 0)} { |
---|
994 | set t [expr 1.0*$px/$frames/${_px2dist}*${_framerate}] |
---|
995 | } else { |
---|
996 | set t 0.0 |
---|
997 | } |
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998 | |
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999 | puts "px = $px" |
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1000 | puts "frames = $frames" |
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1001 | puts "px2dist = ${_px2dist}" |
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1002 | puts "framerate = ${_framerate}" |
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1003 | puts "trajectory = $t" |
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1004 | |
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1005 | return $t |
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1006 | } |
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1007 | |
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