Mike Erwin
628ef78e8a
Complete (for our needs) 2D & 3D transformation API. Should be easy to port legacy OpenGL matrix stack-based code to this. Still needs testing. Ported ortho, frustum, lookAt functions from Viewport FX (rB194998766c65). Kept plenty of Viewport FX code from previous commit. Stack API and 2D routines ported from Gawain. This version uses BLI_math library so everything is licensed under GPL instead of the usual MPL. Part of T49450
123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
#ifndef _GPU_MATRIX_H_
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#define _GPU_MATRIX_H_
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/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2012 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Alexandr Kuznetsov, Jason Wilkins, Mike Erwin
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file source/blender/gpu/GPU_matrix.h
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* \ingroup gpu
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*/
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#include "GPU_glew.h"
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void gpuMatrixInit(void); /* called by system -- make private? */
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/* MatrixMode is conceptually different from GL_MATRIX_MODE */
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typedef enum {
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MATRIX_MODE_INACTIVE,
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MATRIX_MODE_2D,
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MATRIX_MODE_3D
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} MatrixMode;
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MatrixMode gpuMatrixMode(void);
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void gpuMatrixBegin2D(void);
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void gpuMatrixBegin3D(void);
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void gpuMatrixEnd(void);
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/* TODO: gpuMatrixResume2D & gpuMatrixResume3D to switch modes but not reset stack */
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/* ModelView Matrix (2D or 3D) */
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void gpuPushMatrix(void); /* TODO: PushCopy vs PushIdentity? */
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void gpuPopMatrix(void);
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void gpuLoadIdentity(void);
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void gpuScaleUniform(float factor);
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/* 3D ModelView Matrix */
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void gpuLoadMatrix3D(const float m[4][4]);
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void gpuMultMatrix3D(const float m[4][4]);
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//const float *gpuGetMatrix3D(float m[4][4]);
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void gpuTranslate3f(float x, float y, float z);
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void gpuTranslate3fv(const float vec[3]);
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void gpuScale3f(float x, float y, float z);
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void gpuScale3fv(const float vec[3]);
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void gpuRotate3fv(float deg, const float axis[3]); /* axis of rotation should be a unit vector */
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void gpuRotateAxis(float deg, char axis); /* TODO: enum for axis? */
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void gpuLookAt(float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ);
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/* TODO: variant that takes eye[3], center[3], up[3] */
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/* 2D ModelView Matrix */
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void gpuLoadMatrix2D(const float m[3][3]);
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void gpuMultMatrix2D(const float m[3][3]);
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void gpuTranslate2f(float x, float y);
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void gpuTranslate2fv(const float vec[2]);
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void gpuScale2f(float x, float y);
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void gpuScale2fv(const float vec[2]);
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void gpuRotate2D(float deg);
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/* 3D Projection Matrix */
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void gpuOrtho(float left, float right, float bottom, float top, float near, float far);
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void gpuFrustum(float left, float right, float bottom, float top, float near, float far);
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void gpuPerspective(float fovy, float aspect, float near, float far);
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/* pass vector through current transform (world --> screen) */
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void gpuProject(const float obj[3], const float model[4][4], const float proj[4][4], const GLint view[4], float win[3]);
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/* pass vector through inverse transform (world <-- screen) */
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bool gpuUnProject(const float win[3], const float model[4][4], const float proj[4][4], const GLint view[4], float obj[3]);
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/* 2D Projection Matrix */
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void gpuOrtho2D(float left, float right, float bottom, float top);
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#ifdef __cplusplus
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}
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#endif
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#endif /* GPU_MATRIX_H */
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