topical media & game development
mobile-query-three-vendor-three.js-renderers-SVGRenderer.js / js
author: mrdoob / mrdoob.com/
THREE.SVGRenderer = function () {
console.log( 'THREE.SVGRenderer', THREE.REVISION );
var _this = this,
_renderData, _elements, _lights,
_projector = new THREE.Projector(),
_svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg'),
_svgWidth, _svgHeight, _svgWidthHalf, _svgHeightHalf,
_v1, _v2, _v3, _v4,
_clipBox = new THREE.Box2(),
_elemBox = new THREE.Box2(),
_enableLighting = false,
_color = new THREE.Color(),
_diffuseColor = new THREE.Color(),
_emissiveColor = new THREE.Color(),
_ambientLight = new THREE.Color(),
_directionalLights = new THREE.Color(),
_pointLights = new THREE.Color(),
_w, // z-buffer to w-buffer
_vector3 = new THREE.Vector3(), // Needed for PointLight
_svgPathPool = [], _svgCirclePool = [], _svgLinePool = [],
_svgNode, _pathCount, _circleCount, _lineCount,
_quality = 1;
this.domElement = _svg;
this.autoClear = true;
this.sortObjects = true;
this.sortElements = true;
this.info = {
render: {
vertices: 0,
faces: 0
}
}
this.setQuality = function( quality ) {
switch(quality) {
case "high": _quality = 1; break;
case "low": _quality = 0; break;
}
};
// WebGLRenderer compatibility
this.supportsVertexTextures = function () {};
this.setFaceCulling = function () {};
this.setSize = function( width, height ) {
_svgWidth = width; _svgHeight = height;
_svgWidthHalf = _svgWidth / 2; _svgHeightHalf = _svgHeight / 2;
_svg.setAttribute( 'viewBox', ( - _svgWidthHalf ) + ' ' + ( - _svgHeightHalf ) + ' ' + _svgWidth + ' ' + _svgHeight );
_svg.setAttribute( 'width', _svgWidth );
_svg.setAttribute( 'height', _svgHeight );
_clipBox.min.set( - _svgWidthHalf, - _svgHeightHalf );
_clipBox.max.set( _svgWidthHalf, _svgHeightHalf );
};
this.clear = function () {
while ( _svg.childNodes.length > 0 ) {
_svg.removeChild( _svg.childNodes[ 0 ] );
}
};
this.render = function ( scene, camera ) {
if ( camera instanceof THREE.Camera === false ) {
console.error( 'THREE.SVGRenderer.render: camera is not an instance of THREE.Camera.' );
return;
}
var e, el, element, material;
this.autoClear && this.clear();
_this.info.render.vertices = 0;
_this.info.render.faces = 0;
_renderData = _projector.projectScene( scene, camera, this.sortObjects, this.sortElements );
_elements = _renderData.elements;
_lights = _renderData.lights;
_pathCount = 0; _circleCount = 0; _lineCount = 0;
_enableLighting = _lights.length > 0;
if ( _enableLighting ) {
calculateLights( _lights );
}
for ( e = 0, el = _elements.length; e < el; e ++ ) {
element = _elements[ e ];
material = element.material;
if ( material === undefined || material.visible === false ) continue;
_elemBox.makeEmpty();
if ( element instanceof THREE.RenderableParticle ) {
_v1 = element;
_v1.x *= _svgWidthHalf; _v1.y *= -_svgHeightHalf;
renderParticle( _v1, element, material, scene );
} else if ( element instanceof THREE.RenderableLine ) {
_v1 = element.v1; _v2 = element.v2;
_v1.positionScreen.x *= _svgWidthHalf; _v1.positionScreen.y *= - _svgHeightHalf;
_v2.positionScreen.x *= _svgWidthHalf; _v2.positionScreen.y *= - _svgHeightHalf;
_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen ] );
if ( _clipBox.isIntersectionBox( _elemBox ) === true ) {
renderLine( _v1, _v2, element, material, scene );
}
} else if ( element instanceof THREE.RenderableFace3 ) {
_v1 = element.v1; _v2 = element.v2; _v3 = element.v3;
if ( _v1.positionScreen.z < -1 || _v1.positionScreen.z > 1 ) continue;
if ( _v2.positionScreen.z < -1 || _v2.positionScreen.z > 1 ) continue;
if ( _v3.positionScreen.z < -1 || _v3.positionScreen.z > 1 ) continue;
_v1.positionScreen.x *= _svgWidthHalf; _v1.positionScreen.y *= - _svgHeightHalf;
_v2.positionScreen.x *= _svgWidthHalf; _v2.positionScreen.y *= - _svgHeightHalf;
_v3.positionScreen.x *= _svgWidthHalf; _v3.positionScreen.y *= - _svgHeightHalf;
_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen, _v3.positionScreen ] );
renderFace3( _v1, _v2, _v3, element, material, scene );
} else if ( element instanceof THREE.RenderableFace4 ) {
_v1 = element.v1; _v2 = element.v2; _v3 = element.v3; _v4 = element.v4;
if ( _v1.positionScreen.z < -1 || _v1.positionScreen.z > 1 ) continue;
if ( _v2.positionScreen.z < -1 || _v2.positionScreen.z > 1 ) continue;
if ( _v3.positionScreen.z < -1 || _v3.positionScreen.z > 1 ) continue;
if ( _v4.positionScreen.z < -1 || _v4.positionScreen.z > 1 ) continue;
_v1.positionScreen.x *= _svgWidthHalf; _v1.positionScreen.y *= -_svgHeightHalf;
_v2.positionScreen.x *= _svgWidthHalf; _v2.positionScreen.y *= -_svgHeightHalf;
_v3.positionScreen.x *= _svgWidthHalf; _v3.positionScreen.y *= -_svgHeightHalf;
_v4.positionScreen.x *= _svgWidthHalf; _v4.positionScreen.y *= -_svgHeightHalf;
_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen, _v3.positionScreen, _v4.positionScreen ] );
renderFace4( _v1, _v2, _v3, _v4, element, material, scene );
}
}
};
function calculateLights( lights ) {
var l, ll, light, lightColor;
_ambientLight.setRGB( 0, 0, 0 );
_directionalLights.setRGB( 0, 0, 0 );
_pointLights.setRGB( 0, 0, 0 );
for ( l = 0, ll = lights.length; l < ll; l++ ) {
light = lights[ l ];
lightColor = light.color;
if ( light instanceof THREE.AmbientLight ) {
_ambientLight.r += lightColor.r;
_ambientLight.g += lightColor.g;
_ambientLight.b += lightColor.b;
} else if ( light instanceof THREE.DirectionalLight ) {
_directionalLights.r += lightColor.r;
_directionalLights.g += lightColor.g;
_directionalLights.b += lightColor.b;
} else if ( light instanceof THREE.PointLight ) {
_pointLights.r += lightColor.r;
_pointLights.g += lightColor.g;
_pointLights.b += lightColor.b;
}
}
}
function calculateLight( lights, position, normal, color ) {
for ( var l = 0, ll = lights.length; l < ll; l ++ ) {
var light = lights[ l ];
var lightColor = light.color;
if ( light instanceof THREE.DirectionalLight ) {
var lightPosition = _vector3.getPositionFromMatrix( light.matrixWorld ).normalize();
var amount = normal.dot( lightPosition );
if ( amount <= 0 ) continue;
amount *= light.intensity;
color.r += lightColor.r * amount;
color.g += lightColor.g * amount;
color.b += lightColor.b * amount;
} else if ( light instanceof THREE.PointLight ) {
var lightPosition = _vector3.getPositionFromMatrix( light.matrixWorld );
var amount = normal.dot( _vector3.subVectors( lightPosition, position ).normalize() );
if ( amount <= 0 ) continue;
amount *= light.distance == 0 ? 1 : 1 - Math.min( position.distanceTo( lightPosition ) / light.distance, 1 );
if ( amount == 0 ) continue;
amount *= light.intensity;
color.r += lightColor.r * amount;
color.g += lightColor.g * amount;
color.b += lightColor.b * amount;
}
}
}
function renderParticle( v1, element, material, scene ) {
/*
_svgNode = getCircleNode( _circleCount++ );
_svgNode.setAttribute( 'cx', v1.x );
_svgNode.setAttribute( 'cy', v1.y );
_svgNode.setAttribute( 'r', element.scale.x * _svgWidthHalf );
if ( material instanceof THREE.ParticleCircleMaterial ) {
if ( _enableLighting ) {
_color.r = _ambientLight.r + _directionalLights.r + _pointLights.r;
_color.g = _ambientLight.g + _directionalLights.g + _pointLights.g;
_color.b = _ambientLight.b + _directionalLights.b + _pointLights.b;
_color.r = material.color.r * _color.r;
_color.g = material.color.g * _color.g;
_color.b = material.color.b * _color.b;
_color.updateStyleString();
} else {
_color = material.color;
}
_svgNode.setAttribute( 'style', 'fill: ' + _color.__styleString );
}
_svg.appendChild( _svgNode );
*/
}
function renderLine ( v1, v2, element, material, scene ) {
_svgNode = getLineNode( _lineCount ++ );
_svgNode.setAttribute( 'x1', v1.positionScreen.x );
_svgNode.setAttribute( 'y1', v1.positionScreen.y );
_svgNode.setAttribute( 'x2', v2.positionScreen.x );
_svgNode.setAttribute( 'y2', v2.positionScreen.y );
if ( material instanceof THREE.LineBasicMaterial ) {
_svgNode.setAttribute( 'style', 'fill: none; stroke: ' + material.color.getStyle() + '; stroke-width: ' + material.linewidth + '; stroke-opacity: ' + material.opacity + '; stroke-linecap: ' + material.linecap + '; stroke-linejoin: ' + material.linejoin );
_svg.appendChild( _svgNode );
}
}
function renderFace3( v1, v2, v3, element, material, scene ) {
_this.info.render.vertices += 3;
_this.info.render.faces ++;
_svgNode = getPathNode( _pathCount ++ );
_svgNode.setAttribute( 'd', 'M ' + v1.positionScreen.x + ' ' + v1.positionScreen.y + ' L ' + v2.positionScreen.x + ' ' + v2.positionScreen.y + ' L ' + v3.positionScreen.x + ',' + v3.positionScreen.y + 'z' );
if ( material instanceof THREE.MeshBasicMaterial ) {
_color.copy( material.color );
if ( material.vertexColors === THREE.FaceColors ) {
_color.multiply( element.color );
}
} else if ( material instanceof THREE.MeshLambertMaterial ) {
_diffuseColor.copy( material.color );
_emissiveColor.copy( material.emissive );
if ( material.vertexColors === THREE.FaceColors ) {
_diffuseColor.multiply( element.color );
}
if ( _enableLighting ) {
_color.copy( _ambientLight );
calculateLight( _lights, element.centroidModel, element.normalModel, _color );
_color.multiply( _diffuseColor ).add( _emissiveColor );
} else {
_color.copy( _diffuseColor );
}
} else if ( material instanceof THREE.MeshDepthMaterial ) {
_w = 1 - ( material.__2near / (material.__farPlusNear - element.z * material.__farMinusNear) );
_color.setRGB( _w, _w, _w );
} else if ( material instanceof THREE.MeshNormalMaterial ) {
var normal = element.normalModelView;
_color.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );
}
if ( material.wireframe ) {
_svgNode.setAttribute( 'style', 'fill: none; stroke: ' + _color.getStyle() + '; stroke-width: ' + material.wireframeLinewidth + '; stroke-opacity: ' + material.opacity + '; stroke-linecap: ' + material.wireframeLinecap + '; stroke-linejoin: ' + material.wireframeLinejoin );
} else {
_svgNode.setAttribute( 'style', 'fill: ' + _color.getStyle() + '; fill-opacity: ' + material.opacity );
}
_svg.appendChild( _svgNode );
}
function renderFace4( v1, v2, v3, v4, element, material, scene ) {
_this.info.render.vertices += 4;
_this.info.render.faces ++;
_svgNode = getPathNode( _pathCount ++ );
_svgNode.setAttribute( 'd', 'M ' + v1.positionScreen.x + ' ' + v1.positionScreen.y + ' L ' + v2.positionScreen.x + ' ' + v2.positionScreen.y + ' L ' + v3.positionScreen.x + ',' + v3.positionScreen.y + ' L ' + v4.positionScreen.x + ',' + v4.positionScreen.y + 'z' );
if ( material instanceof THREE.MeshBasicMaterial ) {
_color.copy( material.color );
if ( material.vertexColors === THREE.FaceColors ) {
_color.multiply( element.color );
}
} else if ( material instanceof THREE.MeshLambertMaterial ) {
_diffuseColor.copy( material.color );
_emissiveColor.copy( material.emissive );
if ( material.vertexColors === THREE.FaceColors ) {
_diffuseColor.multiply( element.color );
}
if ( _enableLighting ) {
_color.copy( _ambientLight );
calculateLight( _lights, element.centroidModel, element.normalModel, _color );
_color.multiply( _diffuseColor ).add( _emissiveColor );
} else {
_color.copy( _diffuseColor );
}
} else if ( material instanceof THREE.MeshDepthMaterial ) {
_w = 1 - ( material.__2near / (material.__farPlusNear - element.z * material.__farMinusNear) );
_color.setRGB( _w, _w, _w );
} else if ( material instanceof THREE.MeshNormalMaterial ) {
var normal = element.normalModelView;
_color.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );
}
if ( material.wireframe ) {
_svgNode.setAttribute( 'style', 'fill: none; stroke: ' + _color.getStyle() + '; stroke-width: ' + material.wireframeLinewidth + '; stroke-opacity: ' + material.opacity + '; stroke-linecap: ' + material.wireframeLinecap + '; stroke-linejoin: ' + material.wireframeLinejoin );
} else {
_svgNode.setAttribute( 'style', 'fill: ' + _color.getStyle() + '; fill-opacity: ' + material.opacity );
}
_svg.appendChild( _svgNode );
}
function getLineNode( id ) {
if ( _svgLinePool[ id ] == null ) {
_svgLinePool[ id ] = document.createElementNS( 'http://www.w3.org/2000/svg', 'line' );
if ( _quality == 0 ) {
_svgLinePool[ id ].setAttribute( 'shape-rendering', 'crispEdges' ); //optimizeSpeed
}
return _svgLinePool[ id ];
}
return _svgLinePool[ id ];
}
function getPathNode( id ) {
if ( _svgPathPool[ id ] == null ) {
_svgPathPool[ id ] = document.createElementNS( 'http://www.w3.org/2000/svg', 'path' );
if ( _quality == 0 ) {
_svgPathPool[ id ].setAttribute( 'shape-rendering', 'crispEdges' ); //optimizeSpeed
}
return _svgPathPool[ id ];
}
return _svgPathPool[ id ];
}
function getCircleNode( id ) {
if ( _svgCirclePool[id] == null ) {
_svgCirclePool[ id ] = document.createElementNS( 'http://www.w3.org/2000/svg', 'circle' );
if ( _quality == 0 ) {
_svgCirclePool[id].setAttribute( 'shape-rendering', 'crispEdges' ); //optimizeSpeed
}
return _svgCirclePool[ id ];
}
return _svgCirclePool[ id ];
}
function pad( str ) {
while ( str.length < 6 ) str = '0' + str;
return str;
}
};
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.