OPC_TriBoxOverlap.h File Reference

Go to the source code of this file.

Macros
#define	AXISTEST_X01(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	AXISTEST_X2(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	AXISTEST_Y02(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	AXISTEST_Y1(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	AXISTEST_Z0(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	AXISTEST_Z12(a, b, fa, fb)
	TO BE DOCUMENTED. More...
#define	FINDMINMAX(x0, x1, x2, min, max)
	This macro quickly finds the min & max values among 3 variables. More...
#define	IMPLEMENT_CLASS3_TESTS

Functions
inline_ BOOL	planeBoxOverlap (const Point &normal, const float d, const Point &maxbox)
	TO BE DOCUMENTED. More...

Macro Definition Documentation

AXISTEST_X01

#define AXISTEST_X01	(		a,
			b,
			fa,
			fb
	)

Value:

        min = a*v0.y - b*v0.z;                                                                  \
        max = a*v2.y - b*v2.z;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.y + fb * extents.z;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 26 of file OPC_TriBoxOverlap.h.

AXISTEST_X2

#define AXISTEST_X2	(		a,
			b,
			fa,
			fb
	)

Value:

        min = a*v0.y - b*v0.z;                                                                  \
        max = a*v1.y - b*v1.z;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.y + fb * extents.z;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 34 of file OPC_TriBoxOverlap.h.

AXISTEST_Y02

#define AXISTEST_Y02	(		a,
			b,
			fa,
			fb
	)

Value:

        min = b*v0.z - a*v0.x;                                                                  \
        max = b*v2.z - a*v2.x;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.x + fb * extents.z;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 42 of file OPC_TriBoxOverlap.h.

AXISTEST_Y1

#define AXISTEST_Y1	(		a,
			b,
			fa,
			fb
	)

Value:

        min = b*v0.z - a*v0.x;                                                                  \
        max = b*v1.z - a*v1.x;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.x + fb * extents.z;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 50 of file OPC_TriBoxOverlap.h.

AXISTEST_Z0

#define AXISTEST_Z0	(		a,
			b,
			fa,
			fb
	)

Value:

        min = a*v0.x - b*v0.y;                                                                  \
        max = a*v1.x - b*v1.y;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.x + fb * extents.y;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 66 of file OPC_TriBoxOverlap.h.

AXISTEST_Z12

#define AXISTEST_Z12	(		a,
			b,
			fa,
			fb
	)

Value:

        min = a*v1.x - b*v1.y;                                                                  \
        max = a*v2.x - b*v2.y;                                                                  \
        if(min>max) {const float tmp=max; max=min; min=tmp;     }       \
        rad = fa * extents.x + fb * extents.y;                                  \
        if(min>rad || max<-rad) return FALSE;

TO BE DOCUMENTED.

Definition at line 58 of file OPC_TriBoxOverlap.h.

FINDMINMAX

#define FINDMINMAX	(		x0,
			x1,
			x2,
			min,
			max
	)

Value:

        min = max = x0;                                                 \
        if(x1<min) min=x1;                                              \
        if(x1>max) max=x1;                                              \
        if(x2<min) min=x2;                                              \
        if(x2>max) max=x2;

This macro quickly finds the min & max values among 3 variables.

Definition at line 3 of file OPC_TriBoxOverlap.h.

IMPLEMENT_CLASS3_TESTS

#define IMPLEMENT_CLASS3_TESTS

Value:

        float rad;                                                                              \
        float min, max;                                                                 \
                                                                                                        \
        const float fey0 = fabsf(e0.y);                                 \
        const float fez0 = fabsf(e0.z);                                 \
        AXISTEST_X01(e0.z, e0.y, fez0, fey0);                   \
        const float fex0 = fabsf(e0.x);                                 \
        AXISTEST_Y02(e0.z, e0.x, fez0, fex0);                   \
        AXISTEST_Z12(e0.y, e0.x, fey0, fex0);                   \
                                                                                                        \
        const float fey1 = fabsf(e1.y);                                 \
        const float fez1 = fabsf(e1.z);                                 \
        AXISTEST_X01(e1.z, e1.y, fez1, fey1);                   \
        const float fex1 = fabsf(e1.x);                                 \
        AXISTEST_Y02(e1.z, e1.x, fez1, fex1);                   \
        AXISTEST_Z0(e1.y, e1.x, fey1, fex1);                    \
                                                                                                        \
        const Point e2 = mLeafVerts[0] - mLeafVerts[2]; \
        const float fey2 = fabsf(e2.y);                                 \
        const float fez2 = fabsf(e2.z);                                 \
        AXISTEST_X2(e2.z, e2.y, fez2, fey2);                    \
        const float fex2 = fabsf(e2.x);                                 \
        AXISTEST_Y1(e2.z, e2.x, fez2, fex2);                    \
        AXISTEST_Z12(e2.y, e2.x, fey2, fex2);

Definition at line 78 of file OPC_TriBoxOverlap.h.

Function Documentation

planeBoxOverlap()

inline_ BOOL planeBoxOverlap	(	const Point &	normal,
		const float	d,
		const Point &	maxbox
	)

TO BE DOCUMENTED.

Definition at line 11 of file OPC_TriBoxOverlap.h.