First time using three.js and I'm doing a very simple particle animation in which I'm mapping 4 different textures. So far everything is working as desired except that I can't figure out how to rotate particles so that they're rendered with a random orientation (upside down, sideways, etc.) Any help would be appreciated!
You can see my progress so far here: http://development.shapes.divshot.io/particles.html
And here is the relevant code:
sprite1 = THREE.ImageUtils.loadTexture( "sprite1.png" );
sprite2 = THREE.ImageUtils.loadTexture( "sprite2.png" );
sprite3 = THREE.ImageUtils.loadTexture( "sprite3.png" );
sprite4 = THREE.ImageUtils.loadTexture( "sprite4.png" );
parameters = [ sprite1, sprite2, sprite3, sprite4];
for ( i = 0; i < parameters.length; i ++ ) {
sprite = parameters[i];
materials[i] = new THREE.PointCloudMaterial( { size: 45, map: sprite, depthTest: false, transparent : true} );
particles = new THREE.PointCloud( geometry, materials[i] );
particles.rotation.x = Math.random() * 60;
particles.rotation.y = Math.random() * 60;
particles.rotation.z = Math.random() * 60;
scene.add( particles );
}
Using three.js r71
ShaderMaterial
. Your textures images would have to be centered and contained inside a disk -- with a transparent background. That way, there would be no artifacts when rotating the uv-coordinates in the fragment shader. – WestLangley