//
// cocos2d (incomplete) GLU implementation
//
// gluLookAt and gluPerspective from:
// http://jet.ro/creations (San Angeles Observation)
//
//
#import <OpenGLES/ES1/gl.h>
#import <math.h>
#import "OpenGL_Internal.h"
#include "glu.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(GLfloat eyex, GLfloat eyey, GLfloat eyez,
GLfloat centerx, GLfloat centery, GLfloat centerz,
GLfloat upx, GLfloat upy, GLfloat upz)
{
GLfloat m[16];
GLfloat x[3], y[3], z[3];
GLfloat mag;
/* Make rotation matrix */
/* Z vector */
z[0] = eyex - centerx;
z[1] = eyey - centery;
z[2] = eyez - centerz;
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] = upx;
y[1] = upy;
y[2] = upz;
/* 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
glMultMatrixf(m);
/* Translate Eye to Origin */
glTranslatef(-eyex, -eyey, -eyez);
}
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Cocco2D-iPhone开发教程part05
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Cocco2D-iPhone开发教程part05 (349个子文件)
libcocos2d libraries.a 3.26MB
glu.c 2KB
base64.c 2KB
LICENSE.cocos2d 890B
LICENSE.cocosdenshion 1KB
control 256KB
build-state.dat 283KB
build-state~.dat 283KB
build-state.dat 100KB
build-state.dat 70KB
build-state.dat 68KB
build-state.dat 50KB
build-state~.dat 50KB
build-state.dat 27KB
build-state.dat 24KB
build-state.dat 24KB
build-state.dat 3KB
build-state.dat 144B
cocos2d libraries.dep 39KB
cocos2d libraries~.dep 20KB
cocos2d libraries.dep 20KB
cocos2d libraries.dep 20KB
cocos2d libraries.dep 19KB
ZYG005.dep 6KB
ZYG005.dep 4KB
ZYG005~.dep 4KB
ZYG005.dep 4KB
ZYG005.dep 4KB
ZYG005.dep 2KB
cocos2d libraries.dep 0B
.DS_Store 6KB
CCCompatibility.h 15KB
CCNode.h 13KB
CCDirector.h 12KB
CCIntervalAction.h 12KB
ccArray.h 12KB
CDOpenALSupport.h 11KB
CCSprite.h 10KB
CCTexture2D.h 9KB
CDAudioManager.h 9KB
CCMenuItem.h 8KB
CocosDenshion.h 8KB
CCParticleSystem.h 8KB
CCTransition.h 7KB
EAGLView.h 6KB
CCTiledGridAction.h 6KB
CCGrid3DAction.h 6KB
CGPointExtension.h 5KB
CCEaseAction.h 5KB
ccHashSet.h 4KB
CCTMXXMLParser.h 4KB
CCGridAction.h 4KB
CCTextureAtlas.h 4KB
OpenGL_Internal.h 4KB
CCTMXTiledMap.h 4KB
ccTypes.h 4KB
CCLayer.h 4KB
CCBitmapFontAtlas.h 4KB
CCTMXLayer.h 4KB
CCSpriteSheet.h 4KB
CCProtocols.h 4KB
FontLabelStringDrawing.h 4KB
CCTextureCache.h 4KB
ccConfig.h 4KB
CCAction.h 4KB
CCSpriteFrame.h 4KB
CLScoreServerRequest.h 3KB
CLScoreServerPost.h 3KB
FontManager.h 3KB
CCSpriteFrameCache.h 3KB
CCPVRTexture.h 3KB
CCTouchDispatcher.h 3KB
CCRibbon.h 3KB
ZAttributedString.h 3KB
CCActionManager.h 3KB
SimpleAudioEngine.h 3KB
CCGrid.h 3KB
CCScheduler.h 3KB
CDConfig.h 3KB
cocos2d.h 3KB
CCInstantAction.h 3KB
CDataScanner.h 2KB
CCAtlasNode.h 2KB
CCTouchHandler.h 2KB
CCTileMapAtlas.h 2KB
CCCamera.h 2KB
CCMotionStreak.h 2KB
ccMacros.h 2KB
CCDrawingPrimitives.h 2KB
CCMenu.h 2KB
CCTouchDelegateProtocol.h 2KB
CJSONDeserializer.h 2KB
CCRenderTexture.h 2KB
CJSONScanner.h 2KB
FontLabel.h 2KB
CCLabel.h 2KB
CCCameraAction.h 2KB
CJSONSerializer.h 2KB
ZFont.h 2KB
CCLabelAtlas.h 2KB
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