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75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
/**
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* @author sunag / http://www.sunag.com.br/
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*/
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THREE.Math3Node = function( a, b, c, method ) {
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THREE.TempNode.call( this );
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this.a = a;
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this.b = b;
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this.c = c;
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this.method = method || THREE.Math3Node.MIX;
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};
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THREE.Math3Node.MIX = 'mix';
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THREE.Math3Node.REFRACT = 'refract';
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THREE.Math3Node.SMOOTHSTEP = 'smoothstep';
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THREE.Math3Node.FACEFORWARD = 'faceforward';
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THREE.Math3Node.prototype = Object.create( THREE.TempNode.prototype );
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THREE.Math3Node.prototype.constructor = THREE.Math3Node;
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THREE.Math3Node.prototype.getType = function( builder ) {
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var a = builder.getFormatLength( this.a.getType( builder ) );
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var b = builder.getFormatLength( this.b.getType( builder ) );
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var c = builder.getFormatLength( this.c.getType( builder ) );
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if ( a > b && a > c ) return this.a.getType( builder );
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else if ( b > c ) return this.b.getType( builder );
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return this.c.getType( builder );
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};
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THREE.Math3Node.prototype.generate = function( builder, output ) {
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var material = builder.material;
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var type = this.getType( builder );
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var a, b, c,
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al = builder.getFormatLength( this.a.getType( builder ) ),
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bl = builder.getFormatLength( this.b.getType( builder ) ),
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cl = builder.getFormatLength( this.c.getType( builder ) );
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// optimzer
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switch ( this.method ) {
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case THREE.Math3Node.REFRACT:
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a = this.a.build( builder, type );
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b = this.b.build( builder, type );
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c = this.c.build( builder, 'fv1' );
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break;
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case THREE.Math3Node.MIX:
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a = this.a.build( builder, type );
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b = this.b.build( builder, type );
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c = this.c.build( builder, cl == 1 ? 'fv1' : type );
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break;
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default:
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a = this.a.build( builder, type );
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b = this.b.build( builder, type );
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c = this.c.build( builder, type );
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break;
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}
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return builder.format( this.method + '(' + a + ',' + b + ',' + c + ')', type, output );
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};
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