最終更新: mikk_ni3_92 2007年10月01日(月) 10:27:50履歴
現在地 >> メニュー >> サンプルコード::OpenGL >> 画像読み込みと点 >> 画像読み込みと点2
#include <cv.h>
#include <highgui.h>
#include <GL/glut.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <iostream>
void display();
void reshape(int w, int h);
void DRAW_XYZ();
void DRAW_POINT();
using namespace std;
#define TEXT_N 2
const char *files[]={"test2.bmp","mask2.bmp"};
unsigned char *rgba_data;
IplImage *image1[TEXT_N];
void LoadGLTextures()
{
for(int i = 0;i<TEXT_N;i++)
{
image1[i]=cvLoadImage(files[i],CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
if(image1[i]==NULL)
{
printf("can't load image \n");
std::exit(0);
}
cvFlip(image1[i],NULL,0);
}
cvCvtColor(image1[0], image1[0], CV_BGR2RGB);
IplImage *gray;
gray = cvCreateImage(cvGetSize(image1[1]),IPL_DEPTH_8U,1);
cvCvtColor(image1[1], gray, CV_BGR2GRAY);
cvReleaseImage(&image1[1]);
unsigned long size;
size = image1[0]->width*image1[0]->height*4;
rgba_data = new unsigned char[size];
unsigned long m=0;
unsigned long n=0;
for(unsigned long l = 0; l < size ;l+=4,m+=3,n++)
{
rgba_data[l]=(unsigned)image1[0]->imageData[m];
rgba_data[l+1]=(unsigned)image1[0]->imageData[m+1];
rgba_data[l+2]=(unsigned)image1[0]->imageData[m+2];
rgba_data[l+3]=(unsigned)gray->imageData[n];
}
}
inline void GLUT_INIT()
{
glutInitDisplayMode(GLUT_RGBA| GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(200,200);
}
inline void GLUT_CALL_FUNC()
{
glutDisplayFunc(display);
glutReshapeFunc(reshape);
}
inline void MY_INIT()
{
glClearColor(1.0, 1.0, 1.0, 1.0);
LoadGLTextures();
glAlphaFunc(GL_LESS, 0.5);
}
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, 10.0, 30.0, 5.0,10.0, 19.0, 0.0, 1.0, 0.0);
glEnable(GL_DEPTH_TEST);
DRAW_XYZ();
glPushMatrix();
glEnable(GL_ALPHA_TEST);
glTranslated(0,0,-10);
DRAW_POINT();
glDisable(GL_ALPHA_TEST);
glPopMatrix();
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);
gluLookAt(10.0, 10.0, 50.0, 10.0,10.0, 19.0, 0.0, 1.0, 0.0);
}
/**********[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_POINT()
{
unsigned char r,g,b,a;
int rgba_step= image1[0]->widthStep /3*4;
glPointSize(1);
glBegin(GL_POINTS);
for(int j = 0; j<image1[0]->height;j++){
for(int i = 0; i<rgba_step;i+=4)
{
r = rgba_data[j*rgba_step + i];
g = rgba_data[j*rgba_step + i+1];
b = rgba_data[j*rgba_step + i+2];
a = rgba_data[j*rgba_step + i+3];
glColor4ub(r,g,b,a);
glVertex2d*1;
}
}
glEnd();
}
#include <cv.h>
#include <highgui.h>
#include <GL/glut.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <iostream>
void display();
void reshape(int w, int h);
void DRAW_XYZ();
void DRAW_POINT();
using namespace std;
#define TEXT_N 2
const char *files[]={"test2.bmp","mask2.bmp"};
unsigned char *rgba_data;
IplImage *image1[TEXT_N];
void LoadGLTextures()
{
for(int i = 0;i<TEXT_N;i++)
{
image1[i]=cvLoadImage(files[i],CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
if(image1[i]==NULL)
{
printf("can't load image \n");
std::exit(0);
}
cvFlip(image1[i],NULL,0);
}
cvCvtColor(image1[0], image1[0], CV_BGR2RGB);
IplImage *gray;
gray = cvCreateImage(cvGetSize(image1[1]),IPL_DEPTH_8U,1);
cvCvtColor(image1[1], gray, CV_BGR2GRAY);
cvReleaseImage(&image1[1]);
unsigned long size;
size = image1[0]->width*image1[0]->height*4;
rgba_data = new unsigned char[size];
unsigned long m=0;
unsigned long n=0;
for(unsigned long l = 0; l < size ;l+=4,m+=3,n++)
{
rgba_data[l]=(unsigned)image1[0]->imageData[m];
rgba_data[l+1]=(unsigned)image1[0]->imageData[m+1];
rgba_data[l+2]=(unsigned)image1[0]->imageData[m+2];
rgba_data[l+3]=(unsigned)gray->imageData[n];
}
}
inline void GLUT_INIT()
{
glutInitDisplayMode(GLUT_RGBA| GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(200,200);
}
inline void GLUT_CALL_FUNC()
{
glutDisplayFunc(display);
glutReshapeFunc(reshape);
}
inline void MY_INIT()
{
glClearColor(1.0, 1.0, 1.0, 1.0);
LoadGLTextures();
glAlphaFunc(GL_LESS, 0.5);
}
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, 10.0, 30.0, 5.0,10.0, 19.0, 0.0, 1.0, 0.0);
glEnable(GL_DEPTH_TEST);
DRAW_XYZ();
glPushMatrix();
glEnable(GL_ALPHA_TEST);
glTranslated(0,0,-10);
DRAW_POINT();
glDisable(GL_ALPHA_TEST);
glPopMatrix();
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);
gluLookAt(10.0, 10.0, 50.0, 10.0,10.0, 19.0, 0.0, 1.0, 0.0);
}
/**********[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_POINT()
{
unsigned char r,g,b,a;
int rgba_step= image1[0]->widthStep /3*4;
glPointSize(1);
glBegin(GL_POINTS);
for(int j = 0; j<image1[0]->height;j++){
for(int i = 0; i<rgba_step;i+=4)
{
r = rgba_data[j*rgba_step + i];
g = rgba_data[j*rgba_step + i+1];
b = rgba_data[j*rgba_step + i+2];
a = rgba_data[j*rgba_step + i+3];
glColor4ub(r,g,b,a);
glVertex2d*1;
}
}
glEnd();
}