OPC_PlanesTriOverlap.h

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#include "../CollisionData.h"
#include "../CollisionPairInserter.h"

inline_ BOOL PlanesCollider::PlanesTriOverlap(udword in_clip_mask)
{
        // Stats
        mNbVolumePrimTests++;

        const Plane* p = mPlanes;
        udword Mask = 1;

        while(Mask<=in_clip_mask)
        {
                if(in_clip_mask & Mask)
                {
                        float d0 = p->Distance(*mVP.Vertex[0]);
                        float d1 = p->Distance(*mVP.Vertex[1]);
                        float d2 = p->Distance(*mVP.Vertex[2]);
                        if(d0>0.0f && d1>0.0f && d2>0.0f)       return FALSE;
//                      if(!(IR(d0)&SIGN_BITMASK) && !(IR(d1)&SIGN_BITMASK) && !(IR(d2)&SIGN_BITMASK))  return FALSE;
                        if (collisionPairInserter){
                            hrp::CollisionPairInserterBase &c = *collisionPairInserter;
                            hrp::collision_data cdata;
                            cdata.num_of_i_points = 2;
                            cdata.i_point_new[0] = cdata.i_point_new[1] = 1;
                            cdata.i_point_new[2] = cdata.i_point_new[3] = 0;
                            hrp::Vector3 relN; 
                            hrp::getVector3(relN, p->n);
                            cdata.n_vector = c.CD_Rot1*relN; 
                            Point p1, p2;
                            if (d0<=0 && d1>0 && d2>0){
                                cdata.depth = -d0;
                                p1 = ((*mVP.Vertex[0])*d1-(*mVP.Vertex[1])*d0)/(d1-d0);
                                p2 = ((*mVP.Vertex[0])*d2-(*mVP.Vertex[2])*d0)/(d2-d0);
                            }else if(d0>0 && d1<=0 && d2>0){
                                cdata.depth = -d1;
                                p1 = ((*mVP.Vertex[1])*d0-(*mVP.Vertex[0])*d1)/(d0-d1);
                                p2 = ((*mVP.Vertex[1])*d2-(*mVP.Vertex[2])*d1)/(d2-d1);
                            }else if(d0>0 && d1>0 && d2<=0){
                                cdata.depth = -d2;
                                p1 = ((*mVP.Vertex[2])*d0-(*mVP.Vertex[0])*d2)/(d0-d2);
                                p2 = ((*mVP.Vertex[2])*d1-(*mVP.Vertex[1])*d2)/(d1-d2);
                            }else if(d0<=0 && d1<=0 && d2>0){
                                cdata.depth = d0 > d1 ? -d1 : -d0;
                                p1 = ((*mVP.Vertex[0])*d2-(*mVP.Vertex[2])*d0)/(d2-d0);
                                p2 = ((*mVP.Vertex[1])*d2-(*mVP.Vertex[2])*d1)/(d2-d1);
                            }else if(d0<=0 && d1>0 && d2<=0){
                                cdata.depth = d0 > d2 ? -d2 : -d0;
                                p1 = ((*mVP.Vertex[0])*d1-(*mVP.Vertex[1])*d0)/(d1-d0);
                                p2 = ((*mVP.Vertex[2])*d1-(*mVP.Vertex[1])*d2)/(d1-d2);
                            }else if(d0>0 && d1<=0 && d2<=0){
                                cdata.depth = d1 > d2 ? -d2 : -d1;
                                p1 = ((*mVP.Vertex[1])*d0-(*mVP.Vertex[0])*d1)/(d0-d1);
                                p2 = ((*mVP.Vertex[2])*d0-(*mVP.Vertex[0])*d2)/(d0-d2);
                            }
                            if (d0>0||d1>0||d2>0){
                                hrp::Vector3 v1, v2;
                                hrp::getVector3(v1, p1);
                                hrp::getVector3(v2, p2);
                                cdata.i_points[0] = c.CD_s1 * (c.CD_Rot1 * v1 + c.CD_Trans1);
                                cdata.i_points[1] = c.CD_s1 * (c.CD_Rot1 * v2 + c.CD_Trans1);
                                collisionPairInserter->collisions().push_back(cdata);
                            }
                        }
                }
                Mask+=Mask;
                p++;
        }
/*
        for(udword i=0;i<6;i++)
        {
                float d0 = p[i].Distance(mLeafVerts[0]);
                float d1 = p[i].Distance(mLeafVerts[1]);
                float d2 = p[i].Distance(mLeafVerts[2]);
                if(d0>0.0f && d1>0.0f && d2>0.0f)       return false;
        }
*/
        return TRUE;
}