1 | ( function () {
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2 |
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3 | const _box = new THREE.Box3();
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4 |
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5 | const _vector = new THREE.Vector3();
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6 |
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7 | class LineSegmentsGeometry extends THREE.InstancedBufferGeometry {
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8 |
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9 | constructor() {
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10 |
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11 | super();
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12 | this.type = 'LineSegmentsGeometry';
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13 | const positions = [ - 1, 2, 0, 1, 2, 0, - 1, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 0, - 1, - 1, 0, 1, - 1, 0 ];
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14 | const uvs = [ - 1, 2, 1, 2, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 2, 1, - 2 ];
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15 | const index = [ 0, 2, 1, 2, 3, 1, 2, 4, 3, 4, 5, 3, 4, 6, 5, 6, 7, 5 ];
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16 | this.setIndex( index );
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17 | this.setAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
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18 | this.setAttribute( 'uv', new THREE.Float32BufferAttribute( uvs, 2 ) );
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19 |
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20 | }
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21 |
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22 | applyMatrix4( matrix ) {
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23 |
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24 | const start = this.attributes.instanceStart;
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25 | const end = this.attributes.instanceEnd;
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26 |
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27 | if ( start !== undefined ) {
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28 |
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29 | start.applyMatrix4( matrix );
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30 | end.applyMatrix4( matrix );
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31 | start.needsUpdate = true;
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32 |
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33 | }
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34 |
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35 | if ( this.boundingBox !== null ) {
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36 |
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37 | this.computeBoundingBox();
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38 |
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39 | }
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40 |
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41 | if ( this.boundingSphere !== null ) {
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42 |
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43 | this.computeBoundingSphere();
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44 |
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45 | }
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46 |
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47 | return this;
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48 |
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49 | }
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50 |
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51 | setPositions( array ) {
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52 |
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53 | let lineSegments;
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54 |
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55 | if ( array instanceof Float32Array ) {
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56 |
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57 | lineSegments = array;
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58 |
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59 | } else if ( Array.isArray( array ) ) {
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60 |
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61 | lineSegments = new Float32Array( array );
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62 |
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63 | }
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64 |
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65 | const instanceBuffer = new THREE.InstancedInterleavedBuffer( lineSegments, 6, 1 );
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66 |
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67 | this.setAttribute( 'instanceStart', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 0 ) );
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68 |
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69 | this.setAttribute( 'instanceEnd', new THREE.InterleavedBufferAttribute( instanceBuffer, 3, 3 ) );
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70 |
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71 |
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72 | this.computeBoundingBox();
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73 | this.computeBoundingSphere();
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74 | return this;
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75 |
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76 | }
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77 |
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78 | setColors( array ) {
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79 |
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80 | let colors;
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81 |
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82 | if ( array instanceof Float32Array ) {
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83 |
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84 | colors = array;
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85 |
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86 | } else if ( Array.isArray( array ) ) {
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87 |
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88 | colors = new Float32Array( array );
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89 |
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90 | }
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91 |
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92 | const instanceColorBuffer = new THREE.InstancedInterleavedBuffer( colors, 6, 1 );
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93 |
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94 | this.setAttribute( 'instanceColorStart', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 0 ) );
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95 |
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96 | this.setAttribute( 'instanceColorEnd', new THREE.InterleavedBufferAttribute( instanceColorBuffer, 3, 3 ) );
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97 |
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98 | return this;
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99 |
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100 | }
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101 |
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102 | fromWireframeGeometry( geometry ) {
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103 |
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104 | this.setPositions( geometry.attributes.position.array );
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105 | return this;
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106 |
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107 | }
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108 |
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109 | fromEdgesGeometry( geometry ) {
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110 |
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111 | this.setPositions( geometry.attributes.position.array );
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112 | return this;
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113 |
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114 | }
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115 |
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116 | fromMesh( mesh ) {
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117 |
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118 | this.fromWireframeGeometry( new THREE.WireframeGeometry( mesh.geometry ) );
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119 |
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120 | return this;
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121 |
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122 | }
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123 |
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124 | fromLineSegments( lineSegments ) {
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125 |
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126 | const geometry = lineSegments.geometry;
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127 |
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128 | if ( geometry.isGeometry ) {
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129 |
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130 | console.error( 'THREE.LineSegmentsGeometry no longer supports Geometry. Use THREE.BufferGeometry instead.' );
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131 | return;
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132 |
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133 | } else if ( geometry.isBufferGeometry ) {
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134 |
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135 | this.setPositions( geometry.attributes.position.array );
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136 |
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137 | }
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138 |
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139 |
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140 | return this;
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141 |
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142 | }
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143 |
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144 | computeBoundingBox() {
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145 |
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146 | if ( this.boundingBox === null ) {
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147 |
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148 | this.boundingBox = new THREE.Box3();
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149 |
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150 | }
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151 |
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152 | const start = this.attributes.instanceStart;
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153 | const end = this.attributes.instanceEnd;
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154 |
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155 | if ( start !== undefined && end !== undefined ) {
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156 |
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157 | this.boundingBox.setFromBufferAttribute( start );
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158 |
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159 | _box.setFromBufferAttribute( end );
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160 |
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161 | this.boundingBox.union( _box );
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162 |
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163 | }
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164 |
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165 | }
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166 |
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167 | computeBoundingSphere() {
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168 |
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169 | if ( this.boundingSphere === null ) {
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170 |
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171 | this.boundingSphere = new THREE.Sphere();
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172 |
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173 | }
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174 |
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175 | if ( this.boundingBox === null ) {
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176 |
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177 | this.computeBoundingBox();
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178 |
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179 | }
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180 |
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181 | const start = this.attributes.instanceStart;
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182 | const end = this.attributes.instanceEnd;
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183 |
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184 | if ( start !== undefined && end !== undefined ) {
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185 |
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186 | const center = this.boundingSphere.center;
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187 | this.boundingBox.getCenter( center );
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188 | let maxRadiusSq = 0;
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189 |
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190 | for ( let i = 0, il = start.count; i < il; i ++ ) {
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191 |
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192 | _vector.fromBufferAttribute( start, i );
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193 |
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194 | maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector ) );
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195 |
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196 | _vector.fromBufferAttribute( end, i );
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197 |
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198 | maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector ) );
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199 |
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200 | }
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201 |
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202 | this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
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203 |
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204 | if ( isNaN( this.boundingSphere.radius ) ) {
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205 |
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206 | console.error( 'THREE.LineSegmentsGeometry.computeBoundingSphere(): Computed radius is NaN. The instanced position data is likely to have NaN values.', this );
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207 |
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208 | }
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209 |
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210 | }
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211 |
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212 | }
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213 |
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214 | toJSON() {
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215 | }
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216 |
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217 | applyMatrix( matrix ) {
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218 |
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219 | console.warn( 'THREE.LineSegmentsGeometry: applyMatrix() has been renamed to applyMatrix4().' );
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220 | return this.applyMatrix4( matrix );
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221 |
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222 | }
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223 |
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224 | }
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225 |
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226 | LineSegmentsGeometry.prototype.isLineSegmentsGeometry = true;
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227 |
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228 | THREE.LineSegmentsGeometry = LineSegmentsGeometry;
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229 |
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230 | } )();
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