Bounbind Box Collision Responce
Author
Anyone know the way to make responce when a AABB collide with
some polygons??
Thanks in Advance
very difficult subject my friend. you''ll need more than a few posts to answer that questions.
I would suggest you constraint the box''s movement with the planes it collidied with.
Constrain the position, velocity and forces. try something like this.
I would suggest you constraint the box''s movement with the planes it collidied with.
Constrain the position, velocity and forces. try something like this.
class CPlanes{ Vector m_Normal; float m_d; void ConstainBox(CAABBox& Box, float fDamping) { Vector Support = Box.GetSupportPoint(m_Normal); float Depth = d - (Support * m_Normal); if (d < 0.0f) return; Box.m_Position += m_Normal * (Depth * fDamping); } void ConstainVector(Vector& V) { V -= (V * m_Normal) * m_Normal; }};class CAABBox{ CList<CPlanes> m_Constaints; Vector m_Position; Vector m_HalfSize; Vector m_Velocity; Vector m_Acceleration; Vector GetSupportPoint(const Vector& Axis) const { Vector V = m_HalfSize; if (Axis.x > 0.0f) V.x *= -1.0f; if (Axis.y > 0.0f) V.y *= -1.0f; if (Axis.z > 0.0f) V.z *= -1.0f; V += m_Position; return V; } void ApplyConstaints(void) { for(int iter = 0; iter < 10; iter ++) { for(int j = 0; j < m_Constaints.Size(); i ++) { m_Constraints[i].ConstrainBox(this, 0.1f); m_Constraints[i].ConstrainVector(m_Velocity); m_Constraints[i].ConstrainVector(m_Acceleration); } } }};
Author
thanks for your reply.but when my (bounding box)camera
collide with world,I need of the responce for sliding
effect.(LIKE quake3 half-life...)..
Thanks
collide with world,I need of the responce for sliding
effect.(LIKE quake3 half-life...)..
Thanks
look at the articles section about collision detection there s an tutorial over at gamasutra that contains all you need spher ->AABB collision detection + the formulas for all these sliding effects
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