VertexIterator
A vertex iterator simplifies the process of writing vertex data to a vertex buffer.
Summary
Properties
| element | The vertex buffer elements. |
Methods
| end | Notifies the vertex buffer being iterated that writes are complete. |
| next | Moves the vertex iterator on to the next vertex. |
Details
Constructor
VertexIterator(vertexBuffer)
Create a new VertexIterator instance.
Parameters
| vertexBuffer | VertexBuffer | The vertex buffer to be iterated. |
Properties
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.
const iterator = new pc.VertexIterator(vertexBuffer);
iterator.element[pc.SEMANTIC_POSITION].set(-0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSITION].set(0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSITION].set(0.0, 0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
iterator.end();next([count])
Moves the vertex iterator on to the next vertex.
const iterator = new pc.VertexIterator(vertexBuffer);
iterator.element[pc.SEMANTIC_POSITION].set(-0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSITION].set(0.9, -0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
iterator.next();
iterator.element[pc.SEMANTIC_POSITION].set(0.0, 0.9, 0.0);
iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
iterator.end();Parameters
| count | number | Optional number of steps to move on when calling next. Defaults to 1. |