最終更新: mikk_ni3_92 2007年11月06日(火) 13:04:14履歴
現在地 >> メニュー >> サンプルコード::OpenGL >> 1次元テクスチャ >> 1次元テクスチャと画像
#include <cstdio>
#include <cstdlib>
#include <cv.h>
#include <highgui.h>
#include <GL/glut.h>
#include <GL/gl.h>
void display();
void reshape(int w, int h);
void DRAW_XYZ();
void DRAW_LINE();
using namespace std;
/*****[テクスチャ関連]*****/
GLuint *texture;
int height;
int width;
IplImage *image1;
/*****[画像読み込み準備]******************/
inline void LoadGLTextures()
{
image1=cvLoadImage("file4.jpg",CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
if(image1==NULL)
{
printf("can't load image \n");
std::exit(0);
}
cvCvtColor(image1, image1, CV_BGR2RGB);
cvFlip(image1,NULL,0);
/******* テクスチャ作成 ****************/
texture = new GLuint[image1->width];
glGenTextures(image1->height, &texture[0]);
for(int j = 0;j<image1->height;j++)
{
glBindTexture(GL_TEXTURE_1D, texture[j]);
glTexParameteri(GL_TEXTURE_1D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
gluBuild1DMipmaps(GL_TEXTURE_1D, 3, image1->width,GL_RGB,GL_UNSIGNED_BYTE,&image1->imageData[j*image1->widthStep]);
}
height = image1->height;
width = image1->width;
cvReleaseImage( &image1 );
};
inline void GLUT_INIT()
{
glutInitDisplayMode(GLUT_RGBA| GLUT_DOUBLE | GLUT_DEPTH);
}
inline void GLUT_CALL_FUNC()
{
glutDisplayFunc(display);
glutReshapeFunc(reshape);
}
inline void MY_INIT()
{
glClearColor(1.0, 1.0, 1.0, 1.0);
LoadGLTextures();
}
int main(int argc, char **argv)
{
glutInit(&argc,argv);
GLUT_INIT();
glutCreateWindow("window name");
GLUT_CALL_FUNC();
MY_INIT();
glutMainLoop();
return 0;
}
/********[ここからコールバック]****************************************/
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(5.0, 6.0, 7.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glEnable(GL_DEPTH_TEST);
glLineWidth(1);
DRAW_XYZ();
glColor3d(1,1,1);
double h = 0;
for(int j = 0;j < height ;j++,h += 2.0/width)
{
glBindTexture(GL_TEXTURE_1D, texture[j]);
glPushMatrix();
glTranslated(0,h,0);
DRAW_LINE();
glPopMatrix();
glBindTexture(GL_TEXTURE_1D, 0);
}
glDisable(GL_DEPTH_TEST);
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(30.0, (double)w / (double)h, 1.0, 100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
/**********[ここから各種関数]***********************/
void DRAW_XYZ()
{
glBegin(GL_LINES);
glColor3d(0,1,0);//x
glVertex2d(-100,0);
glVertex2d(100, 0);
glColor3d(1,0,0);//y
glVertex2d(0,0);
glVertex2d(0,100);
glColor3d(0,0,1);//z
glVertex3d(0,0,-100);
glVertex3d(0,0, 100);
glEnd();
}
void DRAW_LINE()
{
glEnable(GL_TEXTURE_1D);
glLineWidth(1);
glBegin(GL_LINES);
glTexCoord1d(0.0);
glVertex2d(0,0.1);
glTexCoord1d(1.0);
glVertex2d(2,0.1);
glEnd();
glDisable(GL_TEXTURE_1D);
}
#include <cstdio>
#include <cstdlib>
#include <cv.h>
#include <highgui.h>
#include <GL/glut.h>
#include <GL/gl.h>
void display();
void reshape(int w, int h);
void DRAW_XYZ();
void DRAW_LINE();
using namespace std;
/*****[テクスチャ関連]*****/
GLuint *texture;
int height;
int width;
IplImage *image1;
/*****[画像読み込み準備]******************/
inline void LoadGLTextures()
{
image1=cvLoadImage("file4.jpg",CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
if(image1==NULL)
{
printf("can't load image \n");
std::exit(0);
}
cvCvtColor(image1, image1, CV_BGR2RGB);
cvFlip(image1,NULL,0);
/******* テクスチャ作成 ****************/
texture = new GLuint[image1->width];
glGenTextures(image1->height, &texture[0]);
for(int j = 0;j<image1->height;j++)
{
glBindTexture(GL_TEXTURE_1D, texture[j]);
glTexParameteri(GL_TEXTURE_1D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
gluBuild1DMipmaps(GL_TEXTURE_1D, 3, image1->width,GL_RGB,GL_UNSIGNED_BYTE,&image1->imageData[j*image1->widthStep]);
}
height = image1->height;
width = image1->width;
cvReleaseImage( &image1 );
};
inline void GLUT_INIT()
{
glutInitDisplayMode(GLUT_RGBA| GLUT_DOUBLE | GLUT_DEPTH);
}
inline void GLUT_CALL_FUNC()
{
glutDisplayFunc(display);
glutReshapeFunc(reshape);
}
inline void MY_INIT()
{
glClearColor(1.0, 1.0, 1.0, 1.0);
LoadGLTextures();
}
int main(int argc, char **argv)
{
glutInit(&argc,argv);
GLUT_INIT();
glutCreateWindow("window name");
GLUT_CALL_FUNC();
MY_INIT();
glutMainLoop();
return 0;
}
/********[ここからコールバック]****************************************/
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(5.0, 6.0, 7.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glEnable(GL_DEPTH_TEST);
glLineWidth(1);
DRAW_XYZ();
glColor3d(1,1,1);
double h = 0;
for(int j = 0;j < height ;j++,h += 2.0/width)
{
glBindTexture(GL_TEXTURE_1D, texture[j]);
glPushMatrix();
glTranslated(0,h,0);
DRAW_LINE();
glPopMatrix();
glBindTexture(GL_TEXTURE_1D, 0);
}
glDisable(GL_DEPTH_TEST);
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(30.0, (double)w / (double)h, 1.0, 100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
/**********[ここから各種関数]***********************/
void DRAW_XYZ()
{
glBegin(GL_LINES);
glColor3d(0,1,0);//x
glVertex2d(-100,0);
glVertex2d(100, 0);
glColor3d(1,0,0);//y
glVertex2d(0,0);
glVertex2d(0,100);
glColor3d(0,0,1);//z
glVertex3d(0,0,-100);
glVertex3d(0,0, 100);
glEnd();
}
void DRAW_LINE()
{
glEnable(GL_TEXTURE_1D);
glLineWidth(1);
glBegin(GL_LINES);
glTexCoord1d(0.0);
glVertex2d(0,0.1);
glTexCoord1d(1.0);
glVertex2d(2,0.1);
glEnd();
glDisable(GL_TEXTURE_1D);
}