Hey,
Im trying to control the local yaw orientation of particles distributed on, and aligned to the surface of 3D geometry (envision scales on a reptile, that follow a certain pattern). I'm able to achieve this on a flat surface, by setting the quaternian values for the particles based on a grayscale texture through a simple script.
But applied to a curved geometry this obviously doesnt work. Could anyone with a bit of scripting/math insight give me a hint as to how i would approach manipulating only the local yaw axis after the particle has been aligned to the geometry?
And a secondary question: What is the best approach to achieve fine control of particle spacing when distributed on the surface of geometry? again, envision scales of varying size distributed on a dragon. Fine control of spacing would be required to prevent strange intersections or naked areas.
Im trying to control the local yaw orientation of particles distributed on, and aligned to the surface of 3D geometry (envision scales on a reptile, that follow a certain pattern). I'm able to achieve this on a flat surface, by setting the quaternian values for the particles based on a grayscale texture through a simple script.
But applied to a curved geometry this obviously doesnt work. Could anyone with a bit of scripting/math insight give me a hint as to how i would approach manipulating only the local yaw axis after the particle has been aligned to the geometry?
And a secondary question: What is the best approach to achieve fine control of particle spacing when distributed on the surface of geometry? again, envision scales of varying size distributed on a dragon. Fine control of spacing would be required to prevent strange intersections or naked areas.