import Check from "../../Core/Check.js";
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import clone from "../../Core/clone.js";
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/**
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* A model is made up of one or more nodes in the scene graph. Some details
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* such as instancing are computed on a per-node basis. This class provides
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* a place to store such details. It also inherits some properties from
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* the model render resources.
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*
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* @constructor
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*
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* @param {ModelRenderResources} modelRenderResources The model resources to inherit
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* @param {ModelExperimentalNode} runtimeNode The in-memory representation of the scene graph node.
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*
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* @private
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*/
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export default function NodeRenderResources(modelRenderResources, runtimeNode) {
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//>>includeStart('debug', pragmas.debug);
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Check.typeOf.object("modelRenderResources", modelRenderResources);
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Check.typeOf.object("runtimeNode", runtimeNode);
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//>>includeEnd('debug');
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// Properties inherited from the ModelRenderResources.
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/**
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* A reference to the model. Inherited from the model render resources.
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*
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* @type {ModelExperimental}
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* @readonly
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*
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* @private
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*/
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this.model = modelRenderResources.model;
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/**
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* An object used to build a shader incrementally. This is cloned from the
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* model render resources because each node can compute a different shader.
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*
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* @type {ShaderBuilder}
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* @readonly
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*
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* @private
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*/
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this.shaderBuilder = modelRenderResources.shaderBuilder.clone();
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/**
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* A dictionary mapping uniform name to functions that return the uniform
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* values. Inherited from the model render resources.
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*
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* @type {Object.<String, Function>}
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*
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* @readonly
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*
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* @private
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*/
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this.uniformMap = clone(modelRenderResources.uniformMap);
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/**
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* Options for configuring the alpha stage such as pass and alpha mode. Inherited from the model
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* render resources.
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*
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* @type {ModelAlphaOptions}
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* @readonly
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*
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* @private
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*/
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this.alphaOptions = clone(modelRenderResources.alphaOptions);
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// other properties
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/**
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* A reference to the runtime node
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*
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* @type {ModelExperimentalNode}
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* @readonly
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*
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* @private
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*/
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this.runtimeNode = runtimeNode;
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/**
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* The computed model matrix for this node.
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*
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* @type {Matrix4}
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*
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* @private
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*/
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this.modelMatrix = runtimeNode.modelMatrix;
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/**
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* An array of objects describing vertex attributes that will eventually
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* be used to create a {@link VertexArray} for the draw command. Attributes
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* at the node level may be needed for extensions such as EXT_mesh_gpu_instancing.
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*
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* @type {Object[]}
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* @readonly
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*
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* @private
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*/
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this.attributes = [];
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/**
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* The index to give to the next vertex attribute added to the attributes array. POSITION
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* takes index 0.
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*
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* @type {Number}
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* @readonly
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*
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* @private
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*/
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this.attributeIndex = 1;
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/**
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* The set index to assign to feature ID vertex attribute(s) created from the offset/repeat in the feature ID attribute.
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*
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* @type {Number}
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* @readonly
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*
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* @private
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*/
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this.featureIdVertexAttributeSetIndex = 0;
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/**
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* The number of instances. Default is 0, if instancing is not used.
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*
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* @type {Number}
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* @readonly
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*
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* @private
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*/
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this.instanceCount = 0;
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/**
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* The component-wise maximum value of the translations of the instances.
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*
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* @type {Cartesian3}
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* @readonly
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*
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* @private
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*/
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this.instancingTranslationMax = undefined;
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/**
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* The component-wise minimum value of the translations of the instances.
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*
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* @type {Cartesian3}
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* @readonly
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*
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* @private
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*/
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this.instancingTranslationMin = undefined;
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}
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