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3D Particle Systems?

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Yesterday, I coded my own Particle Engine, but It''s restricted to 2Dimensional only.. How should I do to implement a 3Dimensional Particle engine? Textured, Solid Squares?

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That''s not strictly true. Although the particles are rendered using 2D methods, their positions and velocities use 3 dimensions. Which is pretty much the accepted way of doing a particle system in 3D. You could have true 3D particles, but for most cases, you wouldn''t get enough visual/physical improvement to justify the increase in triangle count.

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