Code-style consistency improvement:
Apply clang-format-all.sh using the _clang-format file through all the cpp/.h files. make sure not to apply it to certain serialization structures, since some parser expects the * as part of the name, instead of type. This commit contains no other changes aside from adding and applying clang-format-all.sh
This commit is contained in:
@@ -40,199 +40,188 @@
|
||||
// http://www.amillionpixels.us
|
||||
//
|
||||
|
||||
static inline float DistToPt(const float *p,const float *plane)
|
||||
static inline float DistToPt(const float *p, const float *plane)
|
||||
{
|
||||
float x = p[0];
|
||||
float y = p[1];
|
||||
float z = p[2];
|
||||
float d = x*plane[0] + y*plane[1] + z*plane[2] + plane[3];
|
||||
float d = x * plane[0] + y * plane[1] + z * plane[2] + plane[3];
|
||||
return d;
|
||||
}
|
||||
|
||||
|
||||
static PlaneTriResult getSidePlane(const float *p,const float *plane,float epsilon)
|
||||
static PlaneTriResult getSidePlane(const float *p, const float *plane, float epsilon)
|
||||
{
|
||||
float d = DistToPt(p, plane);
|
||||
|
||||
float d = DistToPt(p,plane);
|
||||
if ((d + epsilon) > 0)
|
||||
return PTR_FRONT; // it is 'in front' within the provided epsilon value.
|
||||
|
||||
if ( (d+epsilon) > 0 )
|
||||
return PTR_FRONT; // it is 'in front' within the provided epsilon value.
|
||||
|
||||
return PTR_BACK;
|
||||
return PTR_BACK;
|
||||
}
|
||||
|
||||
static void add(const float *p,float *dest,unsigned int tstride,unsigned int &pcount)
|
||||
static void add(const float *p, float *dest, unsigned int tstride, unsigned int &pcount)
|
||||
{
|
||||
char *d = (char *) dest;
|
||||
d = d + pcount*tstride;
|
||||
dest = (float *) d;
|
||||
dest[0] = p[0];
|
||||
dest[1] = p[1];
|
||||
dest[2] = p[2];
|
||||
pcount++;
|
||||
assert( pcount <= 4 );
|
||||
char *d = (char *)dest;
|
||||
d = d + pcount * tstride;
|
||||
dest = (float *)d;
|
||||
dest[0] = p[0];
|
||||
dest[1] = p[1];
|
||||
dest[2] = p[2];
|
||||
pcount++;
|
||||
assert(pcount <= 4);
|
||||
}
|
||||
|
||||
|
||||
// assumes that the points are on opposite sides of the plane!
|
||||
static void intersect(const float *p1,const float *p2,float *split,const float *plane)
|
||||
static void intersect(const float *p1, const float *p2, float *split, const float *plane)
|
||||
{
|
||||
float dp1 = DistToPt(p1, plane);
|
||||
|
||||
float dp1 = DistToPt(p1,plane);
|
||||
float dir[3];
|
||||
|
||||
float dir[3];
|
||||
dir[0] = p2[0] - p1[0];
|
||||
dir[1] = p2[1] - p1[1];
|
||||
dir[2] = p2[2] - p1[2];
|
||||
|
||||
dir[0] = p2[0] - p1[0];
|
||||
dir[1] = p2[1] - p1[1];
|
||||
dir[2] = p2[2] - p1[2];
|
||||
float dot1 = dir[0] * plane[0] + dir[1] * plane[1] + dir[2] * plane[2];
|
||||
float dot2 = dp1 - plane[3];
|
||||
|
||||
float dot1 = dir[0]*plane[0] + dir[1]*plane[1] + dir[2]*plane[2];
|
||||
float dot2 = dp1 - plane[3];
|
||||
|
||||
float t = -(plane[3] + dot2 ) / dot1;
|
||||
|
||||
split[0] = (dir[0]*t)+p1[0];
|
||||
split[1] = (dir[1]*t)+p1[1];
|
||||
split[2] = (dir[2]*t)+p1[2];
|
||||
float t = -(plane[3] + dot2) / dot1;
|
||||
|
||||
split[0] = (dir[0] * t) + p1[0];
|
||||
split[1] = (dir[1] * t) + p1[1];
|
||||
split[2] = (dir[2] * t) + p1[2];
|
||||
}
|
||||
|
||||
PlaneTriResult planeTriIntersection(const float *plane, // the plane equation in Ax+By+Cz+D format
|
||||
const float *triangle, // the source triangle.
|
||||
unsigned int tstride, // stride in bytes of the input and output triangles
|
||||
float epsilon, // the co-planer epsilon value.
|
||||
float *front, // the triangle in front of the
|
||||
unsigned int &fcount, // number of vertices in the 'front' triangle
|
||||
float *back, // the triangle in back of the plane
|
||||
unsigned int &bcount) // the number of vertices in the 'back' triangle.
|
||||
PlaneTriResult planeTriIntersection(const float *plane, // the plane equation in Ax+By+Cz+D format
|
||||
const float *triangle, // the source triangle.
|
||||
unsigned int tstride, // stride in bytes of the input and output triangles
|
||||
float epsilon, // the co-planer epsilon value.
|
||||
float *front, // the triangle in front of the
|
||||
unsigned int &fcount, // number of vertices in the 'front' triangle
|
||||
float *back, // the triangle in back of the plane
|
||||
unsigned int &bcount) // the number of vertices in the 'back' triangle.
|
||||
{
|
||||
fcount = 0;
|
||||
bcount = 0;
|
||||
fcount = 0;
|
||||
bcount = 0;
|
||||
|
||||
const char *tsource = (const char *) triangle;
|
||||
const char *tsource = (const char *)triangle;
|
||||
|
||||
// get the three vertices of the triangle.
|
||||
const float *p1 = (const float *) (tsource);
|
||||
const float *p2 = (const float *) (tsource+tstride);
|
||||
const float *p3 = (const float *) (tsource+tstride*2);
|
||||
// get the three vertices of the triangle.
|
||||
const float *p1 = (const float *)(tsource);
|
||||
const float *p2 = (const float *)(tsource + tstride);
|
||||
const float *p3 = (const float *)(tsource + tstride * 2);
|
||||
|
||||
PlaneTriResult r1 = getSidePlane(p1, plane, epsilon); // compute the side of the plane each vertex is on
|
||||
PlaneTriResult r2 = getSidePlane(p2, plane, epsilon);
|
||||
PlaneTriResult r3 = getSidePlane(p3, plane, epsilon);
|
||||
|
||||
PlaneTriResult r1 = getSidePlane(p1,plane,epsilon); // compute the side of the plane each vertex is on
|
||||
PlaneTriResult r2 = getSidePlane(p2,plane,epsilon);
|
||||
PlaneTriResult r3 = getSidePlane(p3,plane,epsilon);
|
||||
if (r1 == r2 && r1 == r3) // if all three vertices are on the same side of the plane.
|
||||
{
|
||||
if (r1 == PTR_FRONT) // if all three are in front of the plane, then copy to the 'front' output triangle.
|
||||
{
|
||||
add(p1, front, tstride, fcount);
|
||||
add(p2, front, tstride, fcount);
|
||||
add(p3, front, tstride, fcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p1, back, tstride, bcount); // if all three are in 'abck' then copy to the 'back' output triangle.
|
||||
add(p2, back, tstride, bcount);
|
||||
add(p3, back, tstride, bcount);
|
||||
}
|
||||
return r1; // if all three points are on the same side of the plane return result
|
||||
}
|
||||
|
||||
if ( r1 == r2 && r1 == r3 ) // if all three vertices are on the same side of the plane.
|
||||
{
|
||||
if ( r1 == PTR_FRONT ) // if all three are in front of the plane, then copy to the 'front' output triangle.
|
||||
{
|
||||
add(p1,front,tstride,fcount);
|
||||
add(p2,front,tstride,fcount);
|
||||
add(p3,front,tstride,fcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p1,back,tstride,bcount); // if all three are in 'abck' then copy to the 'back' output triangle.
|
||||
add(p2,back,tstride,bcount);
|
||||
add(p3,back,tstride,bcount);
|
||||
}
|
||||
return r1; // if all three points are on the same side of the plane return result
|
||||
}
|
||||
// ok.. we need to split the triangle at the plane.
|
||||
|
||||
// ok.. we need to split the triangle at the plane.
|
||||
// First test ray segment P1 to P2
|
||||
if (r1 == r2) // if these are both on the same side...
|
||||
{
|
||||
if (r1 == PTR_FRONT)
|
||||
{
|
||||
add(p1, front, tstride, fcount);
|
||||
add(p2, front, tstride, fcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p1, back, tstride, bcount);
|
||||
add(p2, back, tstride, bcount);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
float split[3]; // split the point
|
||||
intersect(p1, p2, split, plane);
|
||||
|
||||
// First test ray segment P1 to P2
|
||||
if ( r1 == r2 ) // if these are both on the same side...
|
||||
{
|
||||
if ( r1 == PTR_FRONT )
|
||||
{
|
||||
add( p1, front, tstride, fcount );
|
||||
add( p2, front, tstride, fcount );
|
||||
}
|
||||
else
|
||||
{
|
||||
add( p1, back, tstride, bcount );
|
||||
add( p2, back, tstride, bcount );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
float split[3]; // split the point
|
||||
intersect(p1,p2,split,plane);
|
||||
if (r1 == PTR_FRONT)
|
||||
{
|
||||
add(p1, front, tstride, fcount);
|
||||
add(split, front, tstride, fcount);
|
||||
|
||||
if ( r1 == PTR_FRONT )
|
||||
{
|
||||
add(split, back, tstride, bcount);
|
||||
add(p2, back, tstride, bcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p1, back, tstride, bcount);
|
||||
add(split, back, tstride, bcount);
|
||||
|
||||
add(p1, front, tstride, fcount );
|
||||
add(split, front, tstride, fcount );
|
||||
add(split, front, tstride, fcount);
|
||||
add(p2, front, tstride, fcount);
|
||||
}
|
||||
}
|
||||
|
||||
add(split, back, tstride, bcount );
|
||||
add(p2, back, tstride, bcount );
|
||||
// Next test ray segment P2 to P3
|
||||
if (r2 == r3) // if these are both on the same side...
|
||||
{
|
||||
if (r3 == PTR_FRONT)
|
||||
{
|
||||
add(p3, front, tstride, fcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p3, back, tstride, bcount);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
float split[3]; // split the point
|
||||
intersect(p2, p3, split, plane);
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
add(p1, back, tstride, bcount );
|
||||
add(split, back, tstride, bcount );
|
||||
if (r3 == PTR_FRONT)
|
||||
{
|
||||
add(split, front, tstride, fcount);
|
||||
add(split, back, tstride, bcount);
|
||||
|
||||
add(split, front, tstride, fcount );
|
||||
add(p2, front, tstride, fcount );
|
||||
}
|
||||
add(p3, front, tstride, fcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(split, front, tstride, fcount);
|
||||
add(split, back, tstride, bcount);
|
||||
|
||||
}
|
||||
add(p3, back, tstride, bcount);
|
||||
}
|
||||
}
|
||||
|
||||
// Next test ray segment P2 to P3
|
||||
if ( r2 == r3 ) // if these are both on the same side...
|
||||
{
|
||||
if ( r3 == PTR_FRONT )
|
||||
{
|
||||
add( p3, front, tstride, fcount );
|
||||
}
|
||||
else
|
||||
{
|
||||
add( p3, back, tstride, bcount );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
float split[3]; // split the point
|
||||
intersect(p2,p3,split,plane);
|
||||
// Next test ray segment P3 to P1
|
||||
if (r3 != r1) // if these are both on the same side...
|
||||
{
|
||||
float split[3]; // split the point
|
||||
|
||||
if ( r3 == PTR_FRONT )
|
||||
{
|
||||
add(split, front, tstride, fcount );
|
||||
add(split, back, tstride, bcount );
|
||||
intersect(p3, p1, split, plane);
|
||||
|
||||
add(p3, front, tstride, fcount );
|
||||
}
|
||||
else
|
||||
{
|
||||
add(split, front, tstride, fcount );
|
||||
add(split, back, tstride, bcount );
|
||||
if (r1 == PTR_FRONT)
|
||||
{
|
||||
add(split, front, tstride, fcount);
|
||||
add(split, back, tstride, bcount);
|
||||
}
|
||||
else
|
||||
{
|
||||
add(split, front, tstride, fcount);
|
||||
add(split, back, tstride, bcount);
|
||||
}
|
||||
}
|
||||
|
||||
add(p3, back, tstride, bcount );
|
||||
}
|
||||
}
|
||||
|
||||
// Next test ray segment P3 to P1
|
||||
if ( r3 != r1 ) // if these are both on the same side...
|
||||
{
|
||||
float split[3]; // split the point
|
||||
|
||||
intersect(p3,p1,split,plane);
|
||||
|
||||
if ( r1 == PTR_FRONT )
|
||||
{
|
||||
add(split, front, tstride, fcount );
|
||||
add(split, back, tstride, bcount );
|
||||
}
|
||||
else
|
||||
{
|
||||
add(split, front, tstride, fcount );
|
||||
add(split, back, tstride, bcount );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
return PTR_SPLIT;
|
||||
return PTR_SPLIT;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user