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/**
* @author sunag / http://www.sunag.com.br/
*/
import { TempNode } from '../core/TempNode.js';
function Math2Node( a, b, method ) {
TempNode.call( this );
this.a = a;
this.b = b;
this.method = method;
}
Math2Node.MIN = 'min';
Math2Node.MAX = 'max';
Math2Node.MOD = 'mod';
Math2Node.STEP = 'step';
Math2Node.REFLECT = 'reflect';
Math2Node.DISTANCE = 'distance';
Math2Node.DOT = 'dot';
Math2Node.CROSS = 'cross';
Math2Node.POW = 'pow';
Math2Node.prototype = Object.create( TempNode.prototype );
Math2Node.prototype.constructor = Math2Node;
Math2Node.prototype.nodeType = "Math2";
Math2Node.prototype.getInputType = function ( builder ) {
// use the greater length vector
if ( builder.getTypeLength( this.b.getType( builder ) ) > builder.getTypeLength( this.a.getType( builder ) ) ) {
return this.b.getType( builder );
}
return this.a.getType( builder );
};
Math2Node.prototype.getType = function ( builder ) {
switch ( this.method ) {
case Math2Node.DISTANCE:
case Math2Node.DOT:
return 'f';
case Math2Node.CROSS:
return 'v3';
}
return this.getInputType( builder );
};
Math2Node.prototype.generate = function ( builder, output ) {
var a, b,
type = this.getInputType( builder ),
al = builder.getTypeLength( this.a.getType( builder ) ),
bl = builder.getTypeLength( this.b.getType( builder ) );
// optimzer
switch ( this.method ) {
case Math2Node.CROSS:
a = this.a.build( builder, 'v3' );
b = this.b.build( builder, 'v3' );
break;
case Math2Node.STEP:
a = this.a.build( builder, al === 1 ? 'f' : type );
b = this.b.build( builder, type );
break;
case Math2Node.MIN:
case Math2Node.MAX:
case Math2Node.MOD:
a = this.a.build( builder, type );
b = this.b.build( builder, bl === 1 ? 'f' : type );
break;
default:
a = this.a.build( builder, type );
b = this.b.build( builder, type );
break;
}
return builder.format( this.method + '( ' + a + ', ' + b + ' )', this.getType( builder ), output );
};
Math2Node.prototype.copy = function ( source ) {
TempNode.prototype.copy.call( this, source );
this.a = source.a;
this.b = source.b;
this.method = source.method;
};
Math2Node.prototype.toJSON = function ( meta ) {
var data = this.getJSONNode( meta );
if ( ! data ) {
data = this.createJSONNode( meta );
data.a = this.a.toJSON( meta ).uuid;
data.b = this.b.toJSON( meta ).uuid;
data.method = this.method;
}
return data;
};
export { Math2Node };
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