generate method
dynamic
generate([
- dynamic builder,
- dynamic output
Implementation
generate([builder, output]) {
var method = this.method;
var type = this.getNodeType(builder);
var inputType = this.getInputType(builder);
var a = this.aNode;
var b = this.bNode;
var c = this.cNode;
var isWebGL = builder.renderer.isWebGLRenderer == true;
if (isWebGL &&
(method == MathNode.DFDX || method == MathNode.DFDY) &&
output == 'vec3') {
// Workaround for Adreno 3XX dFd*( vec3 ) bug. See #9988
return new JoinNode([
new MathNode(method, new SplitNode(a, 'x')),
new MathNode(method, new SplitNode(a, 'y')),
new MathNode(method, new SplitNode(a, 'z'))
]).build(builder);
} else if (method == MathNode.TRANSFORM_DIRECTION) {
// dir can be either a direction vector or a normal vector
// upper-left 3x3 of matrix is assumed to be orthogonal
var tA = a;
var tB = b;
if (builder.isMatrix(tA.getNodeType(builder))) {
tB = new ExpressionNode(
"${builder.getType('vec4')}( ${tB.build(builder, 'vec3')}, 0.0 )",
'vec4');
} else {
tA = new ExpressionNode(
"${builder.getType('vec4')}( ${tA.build(builder, 'vec3')}, 0.0 )",
'vec4');
}
var mulNode = new SplitNode(new OperatorNode('*', tA, tB), 'xyz');
return new MathNode(MathNode.NORMALIZE, mulNode).build(builder);
} else if (method == MathNode.SATURATE) {
return "clamp( ${a.build(builder, inputType)}, 0.0, 1.0 )";
} else if (method == MathNode.NEGATE) {
return '( -' + a.build(builder, inputType) + ' )';
} else if (method == MathNode.INVERT) {
return '( 1.0 - ' + a.build(builder, inputType) + ' )';
} else {
var params = [];
if (method == MathNode.CROSS) {
params.addAll([a.build(builder, type), b.build(builder, type)]);
} else if (method == MathNode.STEP) {
params.addAll([
a.build(
builder,
builder.getTypeLength(a.getNodeType(builder)) == 1
? 'float'
: inputType),
b.build(builder, inputType)
]);
} else if ((isWebGL &&
(method == MathNode.MIN || method == MathNode.MAX)) ||
method == MathNode.MOD) {
params.addAll([
a.build(builder, inputType),
b.build(
builder,
builder.getTypeLength(b.getNodeType(builder)) == 1
? 'float'
: inputType)
]);
} else if (method == MathNode.REFRACT) {
params.addAll([
a.build(builder, inputType),
b.build(builder, inputType),
c.build(builder, 'float')
]);
} else if (method == MathNode.MIX) {
params.addAll([
a.build(builder, inputType),
b.build(builder, inputType),
c.build(
builder,
builder.getTypeLength(c.getNodeType(builder)) == 1
? 'float'
: inputType)
]);
} else {
params.addAll([a.build(builder, inputType)]);
if (c != null) {
params.addAll(
[b.build(builder, inputType), c.build(builder, inputType)]);
} else if (b != null) {
params.add(b.build(builder, inputType));
}
}
return "${builder.getMethod(method)}( ${params.join(', ')} )";
}
}