1 | #include "Visualization.h"
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2 | #include "glInterface.h"
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3 | #include "Camera.h"
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4 | #include "SceneEntity.h"
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5 | #include "Bvh.h"
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6 | #include "RenderState.h"
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7 |
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8 | #include <stack>
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9 |
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10 |
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11 | using namespace std;
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12 |
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13 |
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14 | namespace CHCDemoEngine
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15 | {
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16 |
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17 | /******************************************************/
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18 | /* Vizualization implementation */
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19 | /******************************************************/
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20 |
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21 |
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22 | Visualization::Visualization(Bvh *bvh,
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23 | Camera *camera,
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24 | Camera *vizCamera,
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25 | RenderState *renderState):
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26 | mBvh(bvh),
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27 | mCamera(camera),
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28 | mVizCamera(vizCamera),
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29 | mRenderState(renderState),
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30 | mFrameId(0)
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31 | {
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32 | }
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33 |
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34 |
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35 | void Visualization::SetHierarchy(Bvh *bvh)
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36 | {
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37 | mBvh = bvh;
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38 | }
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39 |
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40 |
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41 | void Visualization::SetRenderState(RenderState *state)
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42 | {
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43 | mRenderState = state;
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44 | }
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45 |
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46 |
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47 | void Visualization::SetFrameId(int frameId)
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48 | {
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49 | mFrameId = frameId;
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50 | }
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51 |
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52 |
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53 | void Visualization::Render()
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54 | {
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55 | stack<BvhNode *> tStack;
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56 | tStack.push(mBvh->GetRoot());
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57 |
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58 | glEnableClientState(GL_VERTEX_ARRAY);
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59 | glEnableClientState(GL_NORMAL_ARRAY);
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60 |
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61 | RenderFrustum();
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62 |
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63 | while (!tStack.empty())
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64 | {
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65 | BvhNode *node = tStack.top();
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66 | tStack.pop();
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67 |
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68 | if (!node->IsVirtualLeaf())
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69 | {
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70 | BvhInterior *interior = static_cast<BvhInterior *>(node);
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71 |
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72 | tStack.push(interior->GetFront());
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73 | tStack.push(interior->GetBack());
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74 | }
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75 | else
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76 | {
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77 | if (node->GetLastRenderedFrame() == mFrameId)
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78 | {
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79 | int geometrySize;
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80 | SceneEntity **entities = mBvh->GetGeometry(node, geometrySize);
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81 |
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82 | for (int i = 0; i < geometrySize; ++ i)
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83 | {
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84 | SceneEntity *ent = entities[i];
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85 | ent->Render(mRenderState);
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86 | }
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87 | }
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88 | //leaves.push_back(static_cast<BvhLeaf *>(node));
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89 | }
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90 | }
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91 |
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92 | mRenderState->Reset();
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93 |
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94 | glDisableClientState(GL_VERTEX_ARRAY);
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95 | glDisableClientState(GL_NORMAL_ARRAY);
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96 | }
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97 |
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98 |
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99 | void Visualization::RenderBox(const AxisAlignedBox3 &box)
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100 | {
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101 | glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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102 | glDisable(GL_CULL_FACE);
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103 | glColor3f(1.0f, 0.0f, 0.0f);
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104 |
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105 | glBegin(GL_QUADS);
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106 | glVertex3f(box.Min().x, box.Max().y, box.Min().z);
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107 | glVertex3f(box.Max().x, box.Max().y, box.Min().z);
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108 | glVertex3f(box.Max().x, box.Min().y, box.Min().z);
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109 | glVertex3f(box.Min().x, box.Min().y, box.Min().z);
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110 | glEnd();
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111 |
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112 | glBegin(GL_QUADS);
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113 | glVertex3f(box.Min().x, box.Min().y, box.Max().z);
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114 | glVertex3f(box.Max().x, box.Min().y, box.Max().z);
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115 | glVertex3f(box.Max().x, box.Max().y, box.Max().z);
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116 | glVertex3f(box.Min().x, box.Max().y, box.Max().z);
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117 | glEnd();
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118 |
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119 | glBegin(GL_QUADS);
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120 | glVertex3f(box.Max().x, box.Min().y, box.Min().z);
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121 | glVertex3f(box.Max().x, box.Min().y, box.Max().z);
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122 | glVertex3f(box.Max().x, box.Max().y, box.Max().z);
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123 | glVertex3f(box.Max().x, box.Max().y, box.Min().z);
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124 | glEnd();
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125 |
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126 | glBegin(GL_QUADS);
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127 | glVertex3f(box.Min().x, box.Min().y, box.Min().z);
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128 | glVertex3f(box.Min().x, box.Min().y, box.Max().z);
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129 | glVertex3f(box.Min().x, box.Max().y, box.Max().z);
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130 | glVertex3f(box.Min().x, box.Max().y, box.Min().z);
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131 | glEnd();
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132 |
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133 | glBegin(GL_QUADS);
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134 | glVertex3f(box.Min().x, box.Min().y, box.Min().z);
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135 | glVertex3f(box.Max().x, box.Min().y, box.Min().z);
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136 | glVertex3f(box.Max().x, box.Min().y, box.Max().z);
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137 | glVertex3f(box.Min().x, box.Min().y, box.Max().z);
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138 | glEnd();
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139 |
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140 | glBegin(GL_QUADS);
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141 | glVertex3f(box.Min().x, box.Max().y, box.Min().z);
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142 | glVertex3f(box.Max().x, box.Max().y, box.Min().z);
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143 | glVertex3f(box.Max().x, box.Max().y, box.Max().z);
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144 | glVertex3f(box.Min().x, box.Max().y, box.Max().z);
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145 | glEnd();
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146 |
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147 | glEnable(GL_CULL_FACE);
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148 |
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149 | glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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150 | }
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151 |
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152 |
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153 | void Visualization::RenderFrustum()
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154 | {
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155 | Vector3 ftl, ftr, fbl, fbr, ntl, ntr, nbl, nbr;
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156 | mCamera->ComputePoints(ftl, ftr, fbl, fbr, ntl, ntr, nbl, nbr);
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157 |
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158 | glLineWidth(2);
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159 |
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160 | glBegin(GL_LINE_LOOP);
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161 | glVertex3d(fbl.x, fbl.y, fbl.z);
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162 | glVertex3d(fbr.x, fbr.y, fbr.z);
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163 | glVertex3d(ftr.x, ftr.y, ftr.z);
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164 | glVertex3d(ftl.x, ftl.y, ftl.z);
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165 | glEnd();
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166 |
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167 | glBegin(GL_LINE_LOOP);
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168 | glVertex3d(nbl.x, nbl.y, nbl.z);
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169 | glVertex3d(nbr.x, nbr.y, nbr.z);
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170 | glVertex3d(ntr.x, ntr.y, ntr.z);
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171 | glVertex3d(ntl.x, ntl.y, ntl.z);
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172 | glEnd();
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173 |
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174 | glBegin(GL_LINE_LOOP);
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175 | glVertex3d(fbl.x, fbl.y, fbl.z);
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176 | glVertex3d(ftl.x, ftl.y, ftl.z);
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177 | glVertex3d(ntl.x, ntl.y, ntl.z);
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178 | glVertex3d(nbl.x, nbl.y, nbl.z);
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179 | glEnd();
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180 |
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181 | glBegin(GL_LINE_LOOP);
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182 | glVertex3d(fbr.x, fbr.y, fbr.z);
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183 | glVertex3d(ftr.x, ftr.y, ftr.z);
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184 | glVertex3d(ntr.x, ntr.y, ntr.z);
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185 | glVertex3d(nbr.x, nbr.y, nbr.z);
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186 | glEnd();
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187 |
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188 | glBegin(GL_LINE_LOOP);
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189 | glVertex3d(fbr.x, fbr.y, fbr.z);
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190 | glVertex3d(fbl.x, fbl.y, fbl.z);
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191 | glVertex3d(nbl.x, nbl.y, nbl.z);
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192 | glVertex3d(nbr.x, nbr.y, nbr.z);
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193 | glEnd();
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194 |
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195 | glBegin(GL_LINE_LOOP);
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196 | glVertex3d(ftr.x, ftr.y, ftr.z);
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197 | glVertex3d(ftl.x, ftl.y, ftl.z);
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198 | glVertex3d(ntl.x, ntl.y, ntl.z);
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199 | glVertex3d(ntr.x, ntr.y, ntr.z);
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200 | glEnd();
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201 | }
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202 |
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203 |
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204 | } |
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