_src_fx_sprite.cc File Reference

Sprite class. More...

#include "base/module.hh"
#include "math/module.hh"
#include "math/funcs_trig.hh"
#include "gfx/module.hh"
#include "gfx/osg.hh"
#include "gfx/osg_funcs.hh"
#include "object/module.hh"
#include "fx/module.hh"
#include "fx/sprite.hh"

Namespaces
namespace	fx
	Special-effects.
Defines
#define	FX_SPRITE_CC   1
#define	SPRITE_INIT_VERTEXS()
#define	SPRITE_ROTATE_X_Y_ABS(V, S, C, X, Y)
#define	SPRITE_ROTATE_X_Y_REL(V, S, C)
#define	SPRITE_ROTATE_VERTEXS_ABS(V, SINCOS)
#define	SPRITE_ROTATE_VERTEXS_REL(V, SINCOS)

---

Detailed Description

Sprite class.

LastChangedDate:

2011-04-23 21:07:07 -0400 (Sat, 23 Apr 2011)

Author:

Jim E. Brooks http://www.palomino3d.org

---

Define Documentation

#define FX_SPRITE_CC   1

#define SPRITE_INIT_VERTEXS

(

)

Value:

{{                                                                  \
    const fp w = mWidth * 0.5f;                                     \
                                                                    \
    (*mVertexs)[0][XX] = -w;                                        \
    (*mVertexs)[0][YY] = -w;                                        \
                                                                    \
    (*mVertexs)[1][XX] =  w;                                        \
    (*mVertexs)[1][YY] = -w;                                        \
                                                                    \
    (*mVertexs)[2][XX] =  w;                                        \
    (*mVertexs)[2][YY] =  w;                                        \
                                                                    \
    (*mVertexs)[3][XX] = -w;                                        \
    (*mVertexs)[3][YY] =  w;                                        \
                                                                    \
    (*mVertexs)[0][ZZ] =                                            \
    (*mVertexs)[1][ZZ] =                                            \
    (*mVertexs)[2][ZZ] =                                            \
    (*mVertexs)[3][ZZ] = 0.0f;                                      \
}}

Macros (hi-freq). The ABS macros do an absolute rotation (from zero angle). The REL macros incrementally rotate from current angle.

#define SPRITE_ROTATE_VERTEXS_ABS	(		V,
			SINCOS
	)

Value:

{{                                                                          \
    const fp w = mWidth * 0.5f;                                             \
    SPRITE_ROTATE_X_Y_ABS( (V)[0], SINCOS.first, SINCOS.second, -w, -w )    \
    SPRITE_ROTATE_X_Y_ABS( (V)[1], SINCOS.first, SINCOS.second,  w, -w )    \
    SPRITE_ROTATE_X_Y_ABS( (V)[2], SINCOS.first, SINCOS.second,  w,  w )    \
    SPRITE_ROTATE_X_Y_ABS( (V)[3], SINCOS.first, SINCOS.second, -w,  w )    \
}}

#define SPRITE_ROTATE_VERTEXS_REL	(		V,
			SINCOS
	)

Value:

{{                                                                  \
    SPRITE_ROTATE_X_Y_REL( (V)[0], SINCOS.first, SINCOS.second );   \
    SPRITE_ROTATE_X_Y_REL( (V)[1], SINCOS.first, SINCOS.second );   \
    SPRITE_ROTATE_X_Y_REL( (V)[2], SINCOS.first, SINCOS.second );   \
    SPRITE_ROTATE_X_Y_REL( (V)[3], SINCOS.first, SINCOS.second );   \
}}

#define SPRITE_ROTATE_X_Y_ABS	(		V,
			S,
			C,
			X,
			Y
	)

Value:

{{                                                                  \
    (V)[XX] = (X)*(C) - (Y)*(S);                                    \
    (V)[YY] = (X)*(S) + (Y)*(C);                                    \
}}

#define SPRITE_ROTATE_X_Y_REL	(		V,
			S,
			C
	)

Value:

{{                                                                  \
    /* use temps */                                                 \
    const fp x = (V)[XX];                                           \
    const fp y = (V)[YY];                                           \
    (V)[XX] = x*(C) - y*(S);                                        \
    (V)[YY] = x*(S) + y*(C);                                        \
}}