Constructor
new VertexIterator(vertexBuffer)
Returns a new pc.VertexIterator object.
Parameters:
Name | Type | Description |
---|---|---|
vertexBuffer |
pc.VertexBuffer | The vertex buffer to be iterated. |
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Methods
end()
Notifies the vertex buffer being iterated that writes are complete. Internally
the vertex buffer is unlocked and vertex data is uploaded to video memory.
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Example
var iterator = new pc.VertexIterator(vertexBuffer);
iterator.element[pc.SEMANTIC_POSTIION].set(-0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSTIION].set(0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSTIION].set(0.0, 0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
iterator.end();
next(countopt)
Moves the vertex iterator on to the next vertex.
Parameters:
Name | Type | Attributes | Description |
---|---|---|---|
count |
Number |
<optional> |
Optional number of steps to move on when calling next, defaults to 1. |
- Source:
Example
var iterator = new pc.VertexIterator(vertexBuffer);
iterator.element[pc.SEMANTIC_POSTIION].set(-0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSTIION].set(0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSTIION].set(0.0, 0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
iterator.end();