void Cast()
{
Ray ray = cam.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
if (Physics.Raycast(ray, out hit))
{
CanvasBehavior canvas = hit.collider.gameObject.GetComponent <CanvasBehavior> ();
if (canvas != null)
{
texCoord = hit.textureCoord;
canvas.BrushDraw(splashTexture, texCoord);
}
ProcTerrain.SetHeight(texCoord, splashTexture);
}
}
