28c7e940bf
This new API takes advantage of the recently imported Mesa code to support inverse matrix calculation. The matrix code keeps track (via internal flags) of the transformations a matrix represents so that it can select an optimized inversion function. Note: although other aspects of the Cogl matrix API have followed a similar style to Cairo's matrix API we haven't added a cogl_matrix_invert API because the inverse of a CoglMatrix is actually cached as part of the CoglMatrix structure meaning a destructive API like cogl_matrix_invert doesn't let users take advantage of this caching design.
85 lines
4.6 KiB
C
85 lines
4.6 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Authors:
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* Havoc Pennington <hp@pobox.com> for litl
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*/
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#ifndef __COGL_MATRIX_STACK_H
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#define __COGL_MATRIX_STACK_H
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#include "cogl-matrix.h"
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#include "cogl.h" /* needed for GLenum */
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typedef struct _CoglMatrixStack CoglMatrixStack;
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CoglMatrixStack* _cogl_matrix_stack_new (void);
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void _cogl_matrix_stack_destroy (CoglMatrixStack *stack);
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void _cogl_matrix_stack_push (CoglMatrixStack *stack);
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void _cogl_matrix_stack_pop (CoglMatrixStack *stack);
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void _cogl_matrix_stack_load_identity (CoglMatrixStack *stack);
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void _cogl_matrix_stack_scale (CoglMatrixStack *stack,
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float x,
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float y,
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float z);
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void _cogl_matrix_stack_translate (CoglMatrixStack *stack,
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float x,
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float y,
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float z);
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void _cogl_matrix_stack_rotate (CoglMatrixStack *stack,
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float angle,
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float x,
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float y,
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float z);
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void _cogl_matrix_stack_multiply (CoglMatrixStack *stack,
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const CoglMatrix *matrix);
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void _cogl_matrix_stack_frustum (CoglMatrixStack *stack,
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float left,
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float right,
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float bottom,
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float top,
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float z_near,
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float z_far);
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void _cogl_matrix_stack_perspective (CoglMatrixStack *stack,
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float fov_y,
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float aspect,
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float z_near,
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float z_far);
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void _cogl_matrix_stack_ortho (CoglMatrixStack *stack,
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float left,
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float right,
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float bottom,
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float top,
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float z_near,
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float z_far);
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gboolean _cogl_matrix_stack_get_inverse (CoglMatrixStack *stack,
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CoglMatrix *inverse);
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void _cogl_matrix_stack_get (CoglMatrixStack *stack,
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CoglMatrix *matrix);
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void _cogl_matrix_stack_set (CoglMatrixStack *stack,
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const CoglMatrix *matrix);
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void _cogl_matrix_stack_flush_to_gl (CoglMatrixStack *stack,
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GLenum gl_mode);
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void _cogl_matrix_stack_dirty (CoglMatrixStack *stack);
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#endif /* __COGL_MATRIX_STACK_H */
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