Z-Axis Coordination in WebGL and Three.js
I'm experimenting with WebGL and Three.js, But how to calculate the Z-Axis coordination while moving mouse?
I use this for X and Y:
function getCoord(e) {
X = e.layerX - canvas.offsetLeft;
Y = e.layerY - canvas.offsetTop;
}
how to get Z coordination?
Edit: I find this example, but can't figure it out mysel开发者_运维问答f... https://github.com/mrdoob/three.js/blob/master/examples/webgl_interactive_voxelpainter.html
Thanks
Here is the answer...
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse2D.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse2D.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
function render() {
mouse3D = projector.unprojectVector( mouse2D.clone(), camera );
...
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