88 lines
1.7 KiB
JavaScript
88 lines
1.7 KiB
JavaScript
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/**
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* @author sunag / http://www.sunag.com.br/
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*/
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THREE.PositionNode = function( scope ) {
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THREE.TempNode.call( this, 'v3' );
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this.scope = scope || THREE.PositionNode.LOCAL;
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};
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THREE.PositionNode.LOCAL = 'local';
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THREE.PositionNode.WORLD = 'world';
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THREE.PositionNode.VIEW = 'view';
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THREE.PositionNode.PROJECTION = 'projection';
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THREE.PositionNode.prototype = Object.create( THREE.TempNode.prototype );
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THREE.PositionNode.prototype.constructor = THREE.PositionNode;
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THREE.PositionNode.prototype.getType = function( builder ) {
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switch ( this.scope ) {
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case THREE.PositionNode.PROJECTION:
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return 'v4';
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}
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return this.type;
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};
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THREE.PositionNode.prototype.isShared = function( builder ) {
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switch ( this.scope ) {
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case THREE.PositionNode.LOCAL:
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case THREE.PositionNode.WORLD:
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return false;
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}
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return true;
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};
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THREE.PositionNode.prototype.generate = function( builder, output ) {
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var material = builder.material;
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var result;
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switch ( this.scope ) {
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case THREE.PositionNode.LOCAL:
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material.requestAttribs.position = true;
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if ( builder.isShader( 'vertex' ) ) result = 'transformed';
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else result = 'vPosition';
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break;
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case THREE.PositionNode.WORLD:
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material.requestAttribs.worldPosition = true;
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if ( builder.isShader( 'vertex' ) ) result = 'vWPosition';
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else result = 'vWPosition';
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break;
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case THREE.PositionNode.VIEW:
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if ( builder.isShader( 'vertex' ) ) result = '-mvPosition.xyz';
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else result = 'vViewPosition';
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break;
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case THREE.PositionNode.PROJECTION:
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if ( builder.isShader( 'vertex' ) ) result = '(projectionMatrix * modelViewMatrix * vec4( position, 1.0 ))';
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else result = 'vec4( 0.0 )';
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break;
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}
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return builder.format( result, this.getType( builder ), output );
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};
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