1 | package pl.vorg.mowa.core.graphics;
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2 |
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3 | import javax.media.opengl.GL;
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4 |
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5 | /**
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6 | * An 3d object. Contains information about its vertex points, whether its faces
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7 | * are triangles or quads, etc. Enables displaying the object.
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8 | *
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9 | * @author vorg
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10 | */
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11 | public class Geometry {
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12 | private VertexStream vertexStream;
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13 | private String name;
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14 | private PrimitiveType primitiveType = PrimitiveType.None;
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15 | private BoundingBox boundingBox = new BoundingBox();
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16 | private static final int TANGENT_ATTRIB_LOCATION = 0;
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17 |
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18 | // vbo
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19 | int[] ids = new int[3];
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20 | boolean vboInit = false;
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21 |
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22 | public VertexStream getVertexStream() {
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23 | return vertexStream;
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24 | }
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25 |
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26 | public void setVertexStream(VertexStream vertexStream) {
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27 | this.vertexStream = vertexStream;
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28 | }
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29 |
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30 | public String getName() {
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31 | return name;
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32 | }
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33 |
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34 | public void setName(String name) {
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35 | this.name = name;
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36 | }
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37 |
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38 | public PrimitiveType getPrimitiveType() {
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39 | return primitiveType;
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40 | }
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41 |
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42 | public void setPrimitiveType(PrimitiveType type) {
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43 | this.primitiveType = type;
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44 | }
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45 |
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46 | public void display(GL gl) {
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47 | displayImmediately(gl);
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48 | }
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49 |
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50 | private void displayImmediately(GL gl) {
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51 | if (vertexStream == null) {
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52 | return;
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53 | }
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54 | int[] indices = vertexStream.getIndexBuffer().getBuffer();
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55 | FloatVertexAttrib posAttrib = (FloatVertexAttrib) vertexStream
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56 | .getAttribByName("pos");
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57 | float[] positions = (posAttrib != null) ? posAttrib.getBuffer() : null;
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58 | FloatVertexAttrib normalAttrib = (FloatVertexAttrib) vertexStream
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59 | .getAttribByName("normal");
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60 | float[] normals = (normalAttrib != null) ? normalAttrib.getBuffer()
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61 | : null;
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62 | FloatVertexAttrib texCoord0Attrib = (FloatVertexAttrib) vertexStream
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63 | .getAttribByName("texCoord0");
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64 | float[] texCoords0 = (texCoord0Attrib != null) ? texCoord0Attrib
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65 | .getBuffer() : null;
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66 | FloatVertexAttrib tangentAttrib = (FloatVertexAttrib) vertexStream
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67 | .getAttribByName("tangent");
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68 | float[] tangents = (tangentAttrib != null) ? tangentAttrib.getBuffer()
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69 | : null;
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70 |
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71 | gl.glBegin(primitiveType.toGL());
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72 | for (int i = 0; i < indices.length; i++) {
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73 | if (normals != null) {
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74 | gl.glNormal3fv(normals, indices[i] * 3);
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75 | }
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76 | if (texCoords0 != null) {
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77 | gl.glTexCoord2fv(texCoords0, indices[i] * 2);
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78 | }
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79 | if (tangents != null) {
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80 | gl.glVertexAttrib3fv(TANGENT_ATTRIB_LOCATION, tangents,
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81 | indices[i] * 3);
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82 | }
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83 | gl.glVertex3fv(positions, indices[i] * 3);
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84 | }
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85 | gl.glEnd();
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86 |
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87 | /*
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88 | * //to powinno byc zrobione na VBO albo chociaz VertexArrays ale na
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89 | * razie nie sa one supportowane w JOGL dla OSX if (!vboInit) { vboInit
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90 | * = true; gl.glGenBuffers( 3, ids, 0); // get names
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91 | *
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92 | * FloatBuffer posFB = BufferUtil.newFloatBuffer(positions.length);
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93 | * FloatBuffer normalFB = BufferUtil.newFloatBuffer(normals.length);
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94 | * FloatBuffer texCoord0FB =
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95 | * BufferUtil.newFloatBuffer(texCoords0.length);
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96 | *
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97 | * posFB.put(positions); normalFB.put(normals);
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98 | * texCoord0FB.put(texCoords0);
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99 | *
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100 | * gl.glBindBuffer( GL.GL_ARRAY_BUFFER, ids[0] ); gl.glBufferData(
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101 | * GL.GL_ARRAY_BUFFER, positions.length*BufferUtil.SIZEOF_FLOAT, posFB,
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102 | * GL.GL_STATIC_DRAW ); gl.glVertexPointer( 3, GL.GL_FLOAT, 0, (Buffer)
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103 | * null );
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104 | *
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105 | * //gl.glBindBuffer( GL.GL_ARRAY_BUFFER, ids[1] ); //gl.glBufferData(
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106 | * GL.GL_ARRAY_BUFFER, normals.length*BufferUtil.SIZEOF_FLOAT, normalFB,
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107 | * GL.GL_STATIC_DRAW ); //gl.glNormalPointer( 3, 0, (Buffer) null );
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108 | *
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109 | * //gl.glBindBuffer( GL.GL_ARRAY_BUFFER, ids[2] ); //gl.glBufferData(
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110 | * GL.GL_ARRAY_BUFFER, texCoords0.length*BufferUtil.SIZEOF_FLOAT,
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111 | * texCoord0FB, GL.GL_STATIC_DRAW ); //gl.glTexCoordPointer( 3,
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112 | * GL.GL_FLOAT, 0, (Buffer) null );
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113 | *
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114 | * } else { gl.glEnableClientState (GL.GL_VERTEX_ARRAY);
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115 | * gl.glEnableClientState (GL.GL_NORMAL_ARRAY); gl.glEnableClientState
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116 | * (GL.GL_TEXTURE_COORD_ARRAY);
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117 | *
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118 | * //gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, ids[0] );
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119 | * //gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, ids[1] );
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120 | * //gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, ids[2] );
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121 | *
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122 | * gl.glDrawArrays(GL.GL_TRIANGLES, 0, positions.length); // draw
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123 | * everything (six vertices)
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124 | *
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125 | * gl.glDisableClientState (GL.GL_VERTEX_ARRAY); gl.glDisableClientState
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126 | * (GL.GL_NORMAL_ARRAY); gl.glDisableClientState
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127 | * (GL.GL_TEXTURE_COORD_ARRAY); }
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128 | */
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129 |
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130 | // if (positions != null) {
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131 | // gl.glEnableClientState(GL.GL_VERTEX_ARRAY);
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132 | // FloatBuffer buf =
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133 | // BufferUtil.newFloatBuffer(positions.length);//FloatBuffer.allocate(positions.length);
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134 | // buf.put(positions);
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135 | // gl.glVertexPointer(3, GL.GL_FLOAT, 0, buf);
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136 | // }
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137 |
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138 | // if (normals != null) {
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139 | // gl.glEnableClientState(GL.GL_NORMAL_ARRAY);
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140 | // FloatBuffer buf = FloatBuffer.wrap(normals);
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141 | // gl.glNormalPointer(GL.GL_FLOAT, 3, buf);
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142 | // }
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143 |
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144 | // if (texCoords0 != null) {
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145 | // gl.glClientActiveTexture(GL.GL_TEXTURE0);
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146 | // gl.glEnableClientState(GL.GL_TEXTURE_COORD_ARRAY);
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147 | // FloatBuffer buf = FloatBuffer.wrap(texCoords0);
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148 | // gl.glTexCoordPointer(2, GL.GL_FLOAT, 2, buf);
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149 | // }
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150 |
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151 | // gl.glDrawElements(primitiveType.toGL(),
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152 | // vertexStream.getIndexBuffer().getBuffer().length, GL.GL_INT,
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153 | // stream.getIndices());
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154 |
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155 | // attrib = stream.getAttrib("TANGENT", TYPE_VEC3);
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156 | // if (attrib) {
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157 | // glEnableVertexAttribArrayARB(3);
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158 | // glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, attrib->getStride(),
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159 | // attrib->getBuffer());
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160 | // }
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161 |
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162 | // //normals
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163 | // gl.glDisable(GL.GL_LIGHTING);
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164 | // gl.glDisable(GL.GL_TEXTURE_2D);
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165 | // gl.glColor3ub((byte)255, (byte)0, (byte)0);
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166 | // gl.glBegin(GL.GL_LINES);
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167 | // for(int i=0; i<indices.length; i++) {
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168 | // gl.glVertex3fv(positions, indices[i]*3);
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169 | // if (normals != null) {
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170 | // gl.glVertex3f(
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171 | // positions[indices[i]*3 ] + normals[indices[i]*3 ]*0.05f,
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172 | // positions[indices[i]*3+1] + normals[indices[i]*3+1]*0.05f,
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173 | // positions[indices[i]*3+2] + normals[indices[i]*3+2]*0.05f
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174 | // );
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175 | // }
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176 | // }
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177 | // gl.glEnd();
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178 | // gl.glEnable(GL.GL_LIGHTING);
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179 | }
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180 |
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181 | public BoundingBox getBoundingBox() {
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182 | return boundingBox;
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183 | }
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184 |
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185 | public void updateBoundingBox() {
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186 | boundingBox.empty();
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187 | if (vertexStream == null) {
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188 | return;
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189 | }
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190 |
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191 | FloatVertexAttrib posAttrib = (FloatVertexAttrib) vertexStream
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192 | .getAttribByName("pos");
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193 | if (posAttrib == null) {
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194 | return;
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195 | }
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196 |
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197 | float[] posBuf = posAttrib.getBuffer();
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198 | if (posBuf == null) {
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199 | return;
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200 | }
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201 |
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202 | for (int i = 0; i < posBuf.length; i += 3) {
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203 | boundingBox.add(posBuf[i], posBuf[i + 1], posBuf[i + 2]);
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204 | }
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205 | }
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206 | }
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