three
Version:
JavaScript 3D library
159 lines (83 loc) • 3.31 kB
JavaScript
/**
* @author sunag / http://www.sunag.com.br/
*/
THREE.GLNode = function ( type ) {
this.uuid = THREE.Math.generateUUID();
this.name = "";
this.allows = {};
this.type = type;
this.userData = {};
};
THREE.GLNode.prototype.isNode = true;
THREE.GLNode.prototype.parse = function ( builder, context ) {
context = context || {};
builder.parsing = true;
var material = builder.material;
this.build( builder.addCache( context.cache, context.requires ).addSlot( context.slot ), 'v4' );
material.clearVertexNode();
material.clearFragmentNode();
builder.removeCache().removeSlot();
builder.parsing = false;
};
THREE.GLNode.prototype.parseAndBuildCode = function ( builder, output, context ) {
context = context || {};
this.parse( builder, context );
return this.buildCode( builder, output, context );
};
THREE.GLNode.prototype.buildCode = function ( builder, output, context ) {
context = context || {};
var material = builder.material;
var data = { result: this.build( builder.addCache( context.cache, context.requires ).addSlot( context.slot ), output ) };
if ( builder.isShader( 'vertex' ) ) data.code = material.clearVertexNode();
else data.code = material.clearFragmentNode();
builder.removeCache().removeSlot();
return data;
};
THREE.GLNode.prototype.build = function ( builder, output, uuid ) {
output = output || this.getType( builder, output );
var material = builder.material, data = material.getDataNode( uuid || this.uuid );
if ( builder.parsing ) this.appendDepsNode( builder, data, output );
if ( this.allows[ builder.shader ] === false ) {
throw new Error( 'Shader ' + shader + ' is not compatible with this node.' );
}
if ( material.nodes.indexOf( this ) === - 1 ) {
material.nodes.push( this );
}
if ( this.updateFrame !== undefined && material.updaters.indexOf( this ) === - 1 ) {
material.updaters.push( this );
}
return this.generate( builder, output, uuid );
};
THREE.GLNode.prototype.appendDepsNode = function ( builder, data, output ) {
data.deps = ( data.deps || 0 ) + 1;
var outputLen = builder.getFormatLength( output );
if ( outputLen > ( data.outputMax || 0 ) || this.getType( builder, output ) ) {
data.outputMax = outputLen;
data.output = output;
}
};
THREE.GLNode.prototype.getType = function ( builder, output ) {
return output === 'sampler2D' || output === 'samplerCube' ? output : this.type;
};
THREE.GLNode.prototype.getJSONNode = function ( meta ) {
var isRootObject = ( meta === undefined || typeof meta === 'string' );
if ( ! isRootObject && meta.nodes[ this.uuid ] !== undefined ) {
return meta.nodes[ this.uuid ];
}
};
THREE.GLNode.prototype.createJSONNode = function ( meta ) {
var isRootObject = ( meta === undefined || typeof meta === 'string' );
var data = {};
if ( typeof this.nodeType !== "string" ) throw new Error( "Node does not allow serialization." );
data.uuid = this.uuid;
data.type = this.nodeType + "Node";
if ( this.name !== "" ) data.name = this.name;
if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;
if ( ! isRootObject ) {
meta.nodes[ this.uuid ] = data;
}
return data;
};
THREE.GLNode.prototype.toJSON = function ( meta ) {
return this.getJSONNode( meta ) || this.createJSONNode( meta );
};