bool ckCdt::intersect(ckVec* pos, const Ray& ray, const Tri& tri)
{
if (!checkTouch(ray.m_aabb, tri.m_aabb))
{
return false;
}
ckVec ray_dir = ray.m_to - ray.m_from;
r32 dist;
if (intersectTri(&dist, ray.m_from, ray_dir, tri) && dist <= 1.0f)
{
if (pos)
{
*pos = ray.m_from + ray_dir * dist;
}
return true;
}
else
{
return false;
}
}
void SubdivPatch1Intersector1::subdivide_intersect1_bspline(const Precalculations& pre,
Ray& ray,
const BSplinePatch &patch,
const unsigned int geomID,
const unsigned int primID,
const Vec2f &s,
const Vec2f &t,
const unsigned int subdiv_level)
{
if (subdiv_level == 0)
{
Vec3fa vtx[4];
vtx[0] = patch.eval(s[0],t[0]);
vtx[1] = patch.eval(s[1],t[0]);
vtx[2] = patch.eval(s[1],t[1]);
vtx[3] = patch.eval(s[0],t[1]);
intersectTri(vtx[0],
vtx[1],
vtx[2],
ray,
geomID,
primID,NULL);
intersectTri(vtx[2],
vtx[3],
vtx[0],
ray,
geomID,
primID,NULL);
}
else
{
const float mid_s = 0.5f * (s[0]+s[1]);
const float mid_t = 0.5f * (t[0]+t[1]);
Vec2f s_left(s[0],mid_s);
Vec2f s_right(mid_s,s[1]);
Vec2f t_left(t[0],mid_t);
Vec2f t_right(mid_t,t[1]);
subdivide_intersect1_bspline(pre,ray,patch,geomID,primID,s_left ,t_left,subdiv_level - 1);
subdivide_intersect1_bspline(pre,ray,patch,geomID,primID,s_right,t_left,subdiv_level - 1);
subdivide_intersect1_bspline(pre,ray,patch,geomID,primID,s_right,t_right,subdiv_level - 1);
subdivide_intersect1_bspline(pre,ray,patch,geomID,primID,s_left ,t_right,subdiv_level - 1);
}
}
bool MeshShape::intersect(const Ray &r, float &t, Vector &p, Vector &n, float &u, float &v)
{
return intersectTri(r, t, p, n, u, v);
// Call intersection method for triangles or quads
// if(vertsPerFace == 3)
// return intersectTri(r, t, p, n, u, v);
// else if(vertsPerFace == 4)
// return intersectQuad(r, t, p, n, u, v);
// return false;
}
void SubdivPatch1Intersector1::subdivide_intersect1(const Precalculations& pre,
Ray& ray,
const BSplinePatch &patch,
const unsigned int geomID,
const unsigned int primID,
const unsigned int subdiv_level)
{
if (subdiv_level == 0)
{
__aligned(64) FinalQuad finalQuad;
patch.init( finalQuad );
intersectTri(finalQuad.vtx[0],
finalQuad.vtx[1],
finalQuad.vtx[2],
ray,
geomID,
primID,NULL);
intersectTri(finalQuad.vtx[2],
finalQuad.vtx[3],
finalQuad.vtx[0],
ray,
geomID,
primID,NULL);
}
else
{
BSplinePatch subpatches[4];
patch.subdivide(subpatches);
for (size_t i=0;i<4;i++)
if (intersectBounds(pre,ray,subpatches[i].bounds()))
subdivide_intersect1(pre,
ray,
subpatches[i],
geomID,
primID,
subdiv_level - 1);
}
}
void OgreMesh::intersect(Ogre::Node *node, const Ogre::Ray &ray, IntersectResult &rtn)
{
rtn = IntersectResult();
const Ogre::Vector3 &position = node->_getDerivedPosition();
const Ogre::Quaternion &orient = node->_getDerivedOrientation();
const Ogre::Vector3 &scale = node->_getDerivedScale();
std::vector<Triangle>::iterator itr,itere=mTriangles.end();
int i = 0;
for (itr = mTriangles.begin(); itr != itere; itr++) {
Triangle newt = *itr;
newt.v1.coord = (orient * (newt.v1.coord * scale)) + position;
newt.v2.coord = (orient * (newt.v2.coord * scale)) + position;
newt.v3.coord = (orient * (newt.v3.coord * scale)) + position;
intersectTri(ray, rtn, &newt, false);
if (rtn.intersected) { rtn.tri = *itr; }
//intersectTri(ray, rtn, &*itr);
/* if (i < 10) {
std::cout << "c1:"<<newt.v1.coord << " c2:"<<newt.v2.coord << " c3:"<<newt.v3.coord << " u:"<<newt.v2.u<<" v:"<<newt.v2.v<<std::endl
}*/
}
}