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/* $Id: m_matrix.h,v 1.6 2003/02/25 19:27:06 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file math/m_matrix.h
* \brief Defines basic structures for matrix-handling.
*/
#ifndef _M_MATRIX_H
#define _M_MATRIX_H
/* Give symbolic names to some of the entries in the matrix to help
* out with the rework of the viewport_map as a matrix transform.
*/
#define MAT_SX 0
#define MAT_SY 5
#define MAT_SZ 10
#define MAT_TX 12
#define MAT_TY 13
#define MAT_TZ 14
/**
* \defgroup MatFlags MAT_FLAG_XXX-flags
*
* Bitmasks to indicate different kinds of 4x4 matrices in
* GLmatrix::flags
*/
/*@{*/
#define MAT_FLAG_IDENTITY 0
#define MAT_FLAG_GENERAL 0x1
#define MAT_FLAG_ROTATION 0x2
#define MAT_FLAG_TRANSLATION 0x4
#define MAT_FLAG_UNIFORM_SCALE 0x8
#define MAT_FLAG_GENERAL_SCALE 0x10
#define MAT_FLAG_GENERAL_3D 0x20
#define MAT_FLAG_PERSPECTIVE 0x40
#define MAT_FLAG_SINGULAR 0x80
#define MAT_DIRTY_TYPE 0x100
#define MAT_DIRTY_FLAGS 0x200
#define MAT_DIRTY_INVERSE 0x400
/*@}*/
#define MAT_FLAGS_ANGLE_PRESERVING (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE)
#define MAT_FLAGS_LENGTH_PRESERVING (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION)
#define MAT_FLAGS_3D (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE | \
MAT_FLAG_GENERAL_SCALE | \
MAT_FLAG_GENERAL_3D)
#define MAT_FLAGS_GEOMETRY (MAT_FLAG_GENERAL | \
MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE | \
MAT_FLAG_GENERAL_SCALE | \
MAT_FLAG_GENERAL_3D | \
MAT_FLAG_PERSPECTIVE | \
MAT_FLAG_SINGULAR)
#define MAT_DIRTY (MAT_DIRTY_TYPE | \
MAT_DIRTY_FLAGS | \
MAT_DIRTY_INVERSE)
#define TEST_MAT_FLAGS(mat, a) \
((MAT_FLAGS_GEOMETRY & (~(a)) & ((mat)->flags) ) == 0)
enum matrix_type {
MATRIX_GENERAL, /**< general 4x4 matrix */
MATRIX_IDENTITY, /**< identity matrix */
MATRIX_3D_NO_ROT, /**< ortho projection and others... */
MATRIX_PERSPECTIVE,/**< perspective projection matrix */
MATRIX_2D, /**< 2-D transformation */
MATRIX_2D_NO_ROT, /**< 2-D scale & translate only */
MATRIX_3D /**< 3-D transformation */
};
typedef struct {
GLfloat *m; /* 16-byte aligned */
GLfloat *inv; /* optional, 16-byte aligned */
GLuint flags; /**< possible values determined by (of \link
MatFlags MAT_FLAG_* flags\endlink) */
enum matrix_type type;
} GLmatrix;
extern void
_math_matrix_ctr( GLmatrix *m );
extern void
_math_matrix_dtr( GLmatrix *m );
extern void
_math_matrix_alloc_inv( GLmatrix *m );
extern void
_math_matrix_mul_matrix( GLmatrix *dest, const GLmatrix *a, const GLmatrix *b );
extern void
_math_matrix_mul_floats( GLmatrix *dest, const GLfloat *b );
extern void
_math_matrix_loadf( GLmatrix *mat, const GLfloat *m );
extern void
_math_matrix_translate( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z );
extern void
_math_matrix_rotate( GLmatrix *m, GLfloat angle,
GLfloat x, GLfloat y, GLfloat z );
extern void
_math_matrix_scale( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z );
extern void
_math_matrix_ortho( GLmatrix *mat,
GLfloat left, GLfloat right,
GLfloat bottom, GLfloat top,
GLfloat nearval, GLfloat farval );
extern void
_math_matrix_frustum( GLmatrix *mat,
GLfloat left, GLfloat right,
GLfloat bottom, GLfloat top,
GLfloat nearval, GLfloat farval );
extern void
_math_matrix_set_identity( GLmatrix *dest );
extern void
_math_matrix_copy( GLmatrix *to, const GLmatrix *from );
extern void
_math_matrix_analyse( GLmatrix *mat );
extern void
_math_matrix_print( const GLmatrix *m );
/* Related functions that don't actually operate on GLmatrix structs:
*/
extern void
_math_transposef( GLfloat to[16], const GLfloat from[16] );
extern void
_math_transposed( GLdouble to[16], const GLdouble from[16] );
extern void
_math_transposefd( GLfloat to[16], const GLdouble from[16] );
#endif
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