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/**
* @author sunag / http://www.sunag.com.br/
*/
import { TempNode } from '../core/TempNode.js';
function Math3Node( a, b, c, method ) {
TempNode.call( this );
this.a = a;
this.b = b;
this.c = c;
this.method = method;
}
Math3Node.MIX = 'mix';
Math3Node.CLAMP = 'clamp';
Math3Node.REFRACT = 'refract';
Math3Node.SMOOTHSTEP = 'smoothstep';
Math3Node.FACEFORWARD = 'faceforward';
Math3Node.prototype = Object.create( TempNode.prototype );
Math3Node.prototype.constructor = Math3Node;
Math3Node.prototype.nodeType = "Math3";
Math3Node.prototype.getType = function ( builder ) {
var a = builder.getTypeLength( this.a.getType( builder ) );
var b = builder.getTypeLength( this.b.getType( builder ) );
var c = builder.getTypeLength( this.c.getType( builder ) );
if ( a > b && a > c ) {
return this.a.getType( builder );
} else if ( b > c ) {
return this.b.getType( builder );
}
return this.c.getType( builder );
};
Math3Node.prototype.generate = function ( builder, output ) {
var a, b, c,
al = builder.getTypeLength( this.a.getType( builder ) ),
bl = builder.getTypeLength( this.b.getType( builder ) ),
cl = builder.getTypeLength( this.c.getType( builder ) ),
type = this.getType( builder );
// optimzer
switch ( this.method ) {
case Math3Node.REFRACT:
a = this.a.build( builder, type );
b = this.b.build( builder, type );
c = this.c.build( builder, 'f' );
break;
case Math3Node.MIX:
a = this.a.build( builder, type );
b = this.b.build( builder, type );
c = this.c.build( builder, cl === 1 ? 'f' : type );
break;
default:
a = this.a.build( builder, type );
b = this.b.build( builder, type );
c = this.c.build( builder, type );
break;
}
return builder.format( this.method + '( ' + a + ', ' + b + ', ' + c + ' )', type, output );
};
Math3Node.prototype.copy = function ( source ) {
TempNode.prototype.copy.call( this, source );
this.a = source.a;
this.b = source.b;
this.c = source.c;
this.method = source.method;
};
Math3Node.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.c = this.c.toJSON( meta ).uuid;
data.method = this.method;
}
return data;
};
export { Math3Node };
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