1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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4 | * |
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5 | * Authors: |
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6 | * Wei Qiao <qiaow@purdue.edu> |
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7 | * Insoo Woo <iwoo@purdue.edu> |
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8 | * George A. Howlett <gah@purdue.edu> |
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9 | * Leif Delgass <ldelgass@purdue.edu> |
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10 | */ |
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11 | |
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12 | #include <assert.h> |
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13 | |
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14 | #include <vrmath/Color4f.h> |
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15 | |
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16 | #include "nanovis.h" // For NMESH |
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17 | #include "FlowParticles.h" |
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18 | #include "Flow.h" |
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19 | #include "Trace.h" |
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20 | |
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21 | using namespace nv; |
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22 | using namespace vrmath; |
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23 | |
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24 | FlowParticles::FlowParticles(const char *name) : |
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25 | _name(name), |
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26 | _renderer(new ParticleRenderer(NMESH, NMESH)) |
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27 | { |
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28 | _sv.position.value = 0.0f; |
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29 | _sv.position.flags = RELPOS; |
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30 | _sv.position.axis = AXIS_Z; |
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31 | _sv.color.r = _sv.color.g = _sv.color.b = _sv.color.a = 1.0f; |
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32 | _sv.isHidden = false; |
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33 | _sv.particleSize = 1.2; |
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34 | } |
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35 | |
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36 | FlowParticles::~FlowParticles() |
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37 | { |
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38 | TRACE("Deleting renderer"); |
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39 | if (_renderer != NULL) { |
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40 | delete _renderer; |
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41 | } |
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42 | TRACE("Freeing switches"); |
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43 | Rappture::FreeSwitches(_switches, &_sv, 0); |
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44 | } |
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45 | |
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46 | float |
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47 | FlowParticles::getRelativePosition(FlowPosition *position) |
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48 | { |
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49 | if (position->flags == RELPOS) { |
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50 | return position->value; |
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51 | } |
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52 | switch (position->axis) { |
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53 | case AXIS_X: |
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54 | return (position->value - _volume->xAxis.min()) / |
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55 | (_volume->xAxis.max() - _volume->xAxis.min()); |
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56 | case AXIS_Y: |
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57 | return (position->value - _volume->yAxis.min()) / |
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58 | (_volume->yAxis.max() - _volume->yAxis.min()); |
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59 | case AXIS_Z: |
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60 | return (position->value - _volume->zAxis.min()) / |
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61 | (_volume->zAxis.max() - _volume->zAxis.min()); |
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62 | } |
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63 | return 0.0; |
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64 | } |
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65 | |
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66 | void |
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67 | FlowParticles::render() |
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68 | { |
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69 | TRACE("Particles '%s' axis: %d pos: %g rel pos: %g", |
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70 | _name.c_str(), _sv.position.axis, _sv.position.value, |
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71 | getRelativePosition(&_sv.position)); |
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72 | |
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73 | _renderer->setSlicePosition(getRelativePosition(&_sv.position)); |
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74 | _renderer->setSliceAxis(_sv.position.axis); |
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75 | assert(_renderer->active()); |
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76 | _renderer->render(); |
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77 | } |
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78 | |
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79 | bool |
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80 | FlowParticles::configure() |
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81 | { |
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82 | bool needReset = false; |
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83 | |
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84 | _renderer->setColor(Color4f(_sv.color.r, |
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85 | _sv.color.g, |
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86 | _sv.color.b, |
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87 | _sv.color.a)); |
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88 | _renderer->particleSize(_sv.particleSize); |
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89 | if (_renderer->getSliceAxis() != _sv.position.axis) { |
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90 | needReset = true; |
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91 | _renderer->setSliceAxis(_sv.position.axis); |
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92 | } |
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93 | float pos = getRelativePosition(&_sv.position); |
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94 | if (_renderer->getSlicePosition() != pos) { |
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95 | needReset = true; |
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96 | _renderer->setSlicePosition(pos); |
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97 | } |
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98 | _renderer->active(!_sv.isHidden); |
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99 | |
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100 | return needReset; |
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101 | } |
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