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issue #11: add glu.cpp, glu.h and OpenGL_Internal.h

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Ming 2010-07-19 03:13:54 +00:00
parent 0e6a96423c
commit cb433f5988
3 changed files with 215 additions and 0 deletions
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46
cocos2dx/support/opengl_support/OpenGL_Internal.h Normal file
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/****************************************************************************
Copyright (c) 2010 cocos2d-x.org
http://www.cocos2d-x.org
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
****************************************************************************/
#ifndef __SUPPORT_OPGL_SUPPORT_OPGL_INTERNAL_H__
#define __SUPPORT_OPGL_SUPPORT_OPGL_INTERNAL_H__
/* Generic error reporting */
#define REPORT_ERROR(__FORMAT__, ...) printf("%s: %s\n", __FUNCTION__, __VA_ARGS__)
/* EAGL and GL functions calling wrappers that log on error */
#define CALL_EAGL_FUNCTION(__FUNC__, ...) ({ EAGLError __error = __FUNC__( __VA_ARGS__ ); if(__error != kEAGLErrorSuccess) printf("%s() called from %s returned error %i\n", #__FUNC__, __FUNCTION__, __error); (__error ? false : true); })
//#define CHECK_GL_ERROR() ({ GLenum __error = glGetError(); if(__error) printf("OpenGL error 0x%04X in %s\n", __error, __FUNCTION__); (__error ? NO : YES); })
#define CHECK_GL_ERROR() ({ GLenum __error = glGetError(); if(__error) printf("OpenGL error 0x%04X in %s\n", __error, __FUNCTION__); })
/* Optional delegate methods support */
#ifndef __DELEGATE_IVAR__
#define __DELEGATE_IVAR__ _delegate
#endif
#ifndef __DELEGATE_METHODS_IVAR__
#define __DELEGATE_METHODS_IVAR__ _delegateMethods
#endif
#define TEST_DELEGATE_METHOD_BIT(__BIT__) (self->__DELEGATE_METHODS_IVAR__ & (1 << __BIT__))
#define SET_DELEGATE_METHOD_BIT(__BIT__, __NAME__) { if([self->__DELEGATE_IVAR__ respondsToSelector:@selector(__NAME__)]) self->__DELEGATE_METHODS_IVAR__ |= (1 << __BIT__); else self->__DELEGATE_METHODS_IVAR__ &= ~(1 << __BIT__); }
#endif // __SUPPORT_OPGL_SUPPORT_OPGL_INTERNAL_H__

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cocos2dx/support/opengl_support/glu.cpp Normal file
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/****************************************************************************
Copyright (c) 2010 cocos2d-x.org
http://www.cocos2d-x.org
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
****************************************************************************/
#include "glu.h"
#include "OpenGL_Internal.h"
#include <GLES/gl.h>
#define _USE_MATH_DEFINES
#include <math.h>
void gluPerspective(GLfloat fovy, GLfloat aspect, GLfloat zNear, GLfloat zFar)
{
GLfloat xmin, xmax, ymin, ymax;
ymax = zNear * (GLfloat)tanf(fovy * (float)M_PI / 360);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
glFrustumf(xmin, xmax,
ymin, ymax,
zNear, zFar);
}
void gluLookAt(float fEyeX, float fEyeY, float fEyeZ,
float fCenterX, float fCenterY, float fCenterZ,
float fUpX, float fUpY, float fUpZ)
{
GLfloat m[16];
GLfloat x[3], y[3], z[3];
GLfloat mag;
/* Make rotation matrix */
/* Z vector */
z[0] = fEyeX - fCenterX;
z[1] = fEyeY - fCenterY;
z[2] = fEyeZ - fCenterZ;
mag = (float)sqrtf(z[0] * z[0] + z[1] * z[1] + z[2] * z[2]);
if (mag) {
z[0] /= mag;
z[1] /= mag;
z[2] /= mag;
}
/* Y vector */
y[0] = fUpX;
y[1] = fUpY;
y[2] = fUpZ;
/* X vector = Y cross Z */
x[0] = y[1] * z[2] - y[2] * z[1];
x[1] = -y[0] * z[2] + y[2] * z[0];
x[2] = y[0] * z[1] - y[1] * z[0];
/* Recompute Y = Z cross X */
y[0] = z[1] * x[2] - z[2] * x[1];
y[1] = -z[0] * x[2] + z[2] * x[0];
y[2] = z[0] * x[1] - z[1] * x[0];
/* cross product gives area of parallelogram, which is < 1.0 for
* non-perpendicular unit-length vectors; so normalize x, y here
*/
mag = (float)sqrtf(x[0] * x[0] + x[1] * x[1] + x[2] * x[2]);
if (mag) {
x[0] /= mag;
x[1] /= mag;
x[2] /= mag;
}
mag = (float)sqrtf(y[0] * y[0] + y[1] * y[1] + y[2] * y[2]);
if (mag) {
y[0] /= mag;
y[1] /= mag;
y[2] /= mag;
}
#define M(row,col) m[col*4+row]
M(0, 0) = x[0];
M(0, 1) = x[1];
M(0, 2) = x[2];
M(0, 3) = 0.0f;
M(1, 0) = y[0];
M(1, 1) = y[1];
M(1, 2) = y[2];
M(1, 3) = 0.0f;
M(2, 0) = z[0];
M(2, 1) = z[1];
M(2, 2) = z[2];
M(2, 3) = 0.0f;
M(3, 0) = 0.0f;
M(3, 1) = 0.0f;
M(3, 2) = 0.0f;
M(3, 3) = 1.0f;
#undef M
{
int a;
GLfloat fixedM[16];
for (a = 0; a < 16; ++a)
fixedM[a] = m[a];
glMultMatrixf(fixedM);
}
/* Translate Eye to Origin */
glTranslatef(-fEyeX, -fEyeY, -fEyeZ);
}

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cocos2dx/support/opengl_support/glu.h Normal file
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/****************************************************************************
Copyright (c) 2010 cocos2d-x.org
http://www.cocos2d-x.org
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
****************************************************************************/
#ifndef __SUPPORT_OPGL_SUPPORT_GLU_H__
#define __SUPPORT_OPGL_SUPPORT_GLU_H__
#include <GLES/gl.h>
/**
@file
cocos2d OpenGL GLU implementation
*/
/** OpenGL gluLookAt implementation */
void gluLookAt(float fEyeX, float fEyeY, float fEyeZ, float fLookAtX, float fLookAtY, float fLookAtZ, float fUpX, float fUpY, float fUpZ);
/** OpenGL gluPerspective implementation */
void gluPerspective(GLfloat fovy, GLfloat aspect, GLfloat zNear, GLfloat zFar);
#endif // __SUPPORT_OPGL_SUPPORT_GLU_H__