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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:Mesh] &rarr;
<h1>[name]</h1>
<p class="desc">
A special version of [page:Mesh] with instanced rendering support. Use [name] if you have to render a large number of
objects with the same geometry and material but with different world transformations. The usage of [name] will help you
to reduce the number of draw calls and thus improve the overall rendering performance in your application.
</p>
<h2>Examples</h2>
<p>
[example:webgl_instancing_dynamic WebGL / instancing / dynamic]<br />
[example:webgl_instancing_performance WebGL / instancing / performance]<br />
[example:webgl_instancing_scatter WebGL / instancing / scatter]<br />
[example:webgl_instancing_raycast WebGL / instancing / raycast]
</p>
<h2>Constructor</h2>
<h3>[name]( [param:BufferGeometry geometry], [param:Material material], [param:Integer count] )</h3>
<p>
[page:BufferGeometry geometry] - an instance of [page:BufferGeometry].<br />
[page:Material material] - an instance of [page:Material]. Default is a new [page:MeshBasicMaterial].<br />
[page:Integer count] - the number of instances.<br />
</p>
<h2>Properties</h2>
<p>See the base [page:Mesh] class for common properties.</p>
<h3>[property:Integer count]</h3>
<p>
The number of instances. The `count` value passed into the constructor represents the maximum number of
instances of this mesh. You can change the number of instances at runtime to an integer value
in the range [0, count].
</p>
<p>
If you need more instances than the original count value, you have to create a new [name].
</p>
<h3>[property:InstancedBufferAttribute instanceColor]</h3>
<p>
Represents the colors of all instances. `null` by default.
You have to set its [page:BufferAttribute.needsUpdate needsUpdate] flag to true if you modify instanced data via [page:.setColorAt]().
</p>
<h3>[property:InstancedBufferAttribute instanceMatrix]</h3>
<p>
Represents the local transformation of all instances.
You have to set its [page:BufferAttribute.needsUpdate needsUpdate] flag to true if you modify instanced data via [page:.setMatrixAt]().
</p>
<h3>[property:Boolean isInstancedMesh]</h3>
<p>
Read-only flag to check if a given object is of type [name].
</p>
<h2>Methods</h2>
<p>See the base [page:Mesh] class for common methods.</p>
<h3>[method:undefined dispose]()</h3>
<p>
Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
</p>
<h3>[method:undefined getColorAt]( [param:Integer index], [param:Color color] )</h3>
<p>
[page:Integer index]: The index of an instance. Values have to be in the range [0, count].
</p>
<p>
[page:Color color]: This color object will be set to the color of the defined instance.
</p>
<p>
Get the color of the defined instance.
</p>
<h3>[method:undefined getMatrixAt]( [param:Integer index], [param:Matrix4 matrix] )</h3>
<p>
[page:Integer index]: The index of an instance. Values have to be in the range [0, count].
</p>
<p>
[page:Matrix4 matrix]: This 4x4 matrix will be set to the local transformation matrix of the defined instance.
</p>
<p>
Get the local transformation matrix of the defined instance.
</p>
<h3>[method:undefined setColorAt]( [param:Integer index], [param:Color color] )</h3>
<p>
[page:Integer index]: The index of an instance. Values have to be in the range [0, count].
</p>
<p>
[page:Color color]: The color of a single instance.
</p>
<p>
Sets the given color to the defined instance.
Make sure you set [page:.instanceColor][page:BufferAttribute.needsUpdate .needsUpdate] to true after updating all the colors.
</p>
<h3>[method:undefined setMatrixAt]( [param:Integer index], [param:Matrix4 matrix] )</h3>
<p>
[page:Integer index]: The index of an instance. Values have to be in the range [0, count].
</p>
<p>
[page:Matrix4 matrix]: A 4x4 matrix representing the local transformation of a single instance.
</p>
<p>
Sets the given local transformation matrix to the defined instance.
Make sure you set [page:.instanceMatrix][page:BufferAttribute.needsUpdate .needsUpdate] to true after updating all the matrices.
</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
</p>
</body>
</html>