thank you all of you. i try myself to finish my homework now. my teacher only gave some guides to do. i am begin to solve another home work. beside , i am a math student , not computer programming student.

i am looking for for this code. if you have it, please share.

can you define "POLYGON" ?

can i have an project ?

can i have an example using this method?

this code is used to load bmp picture. but then i can't draw anything on the window. please help !! http://www.mediafire.com/?fihytwvjlyn

the problem is: i have this code to load bmp picture, but i don't know how to use.

int LoadGLTextures();

i only need to load bmp picture.

this is my project. draw B-spline by De Boor method, and use it to take boundary of bmp picture. http://www.mediafire.com/?4m2jrmg3lyv[^]

but i put apple.bmp in the same folder with main code, write int main() to use it. then it did not work.

int main(int argc, char* argv[])
{

glutInit(&argc, argv);
glutInitDisplayMode(GLUT\_DOUBLE | GLUT\_RGB); 
glutInitWindowSize(640, 480); 
glutInitWindowPosition(0, 0); 
glutCreateWindow("Hello OpenGL!");
OnInit(); 
glutDisplayFunc(OnDraw); 
glutReshapeFunc(OnSize);
glutIdleFunc(OnIdle);
glutKeyboardFunc(OnKey);
//---------------------------
glutMouseFunc(OnMouse);
glutSpecialFunc(OnKeySpecial);

    LoadGLTextures();

//---------------------------
glutMainLoop();
return 0;

}

Can you write a simple code which use this code as an example? thank very much. :)

i have this code to load a bmp picture. but i don't know how to use it.!!! #include "stdafx.h" #include "glaux.h" #include "glut.h" GLuint texture[6]; int LoadGLTextures() { int Status=FALSE; // Status Indicator AUX_RGBImageRec *TextureImage[1]; // Create Storage Space For The Texture memset(TextureImage,0,sizeof(void *)*2); // Set The Pointer To NULL // Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit if (TextureImage[0]=LoadBMP("apple.bmp")) { Status=TRUE; // Set The Status To TRUE glGenTextures(3, &texture[0]); // Create Three Textures // Create Nearest Filtered Texture glBindTexture(GL_TEXTURE_2D, texture[0]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); // ( NEW ) glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); // ( NEW ) glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY,0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); // Create Linear Filtered Texture glBindTexture(GL_TEXTURE_2D, texture[1]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY,0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); // Create MipMapped Texture glBindTexture(GL_TEXTURE_2D, texture[2]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // ( NEW ) glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST); gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TextureImage[0]->sizeX,TextureImage[0]->sizeY, GL_RGB, GL_UNSIGNED_BYTE,TextureImage[0]->data); // ( NEW ) if (TextureImage[0]) // If Texture Exists { if (TextureImage[0]->data) // If Texture Image Exists { free(TextureImage[0]->data); // Free The Texture Image Memory } free(TextureImage[0]); // Free The Image Structure } } return Status; } //----------------------------------------------------------------------------- AUX_RGBImageRec

main.obj : error LNK2001: unresolved external symbol _auxDIBImageLoadA@4 Debug/main.exe : fatal error LNK1120: 1 unresolved externals

please share me link to down

example: double 5 cover to '5'.

i have an double array u[100]. this code print "Hello 123" to openGL window, can i print u like this?

static char sbuff[20];

wsprintf(sbuff,"Hello %d",123);
OutText(0,yMax - 10,sbuff,GLUT_BITMAP_8_BY_13);

void OutText(float x,float y,char *text,void *font)
{
glRasterPos2f(x,y);
for(int i=0;text[i]!=0;i++)
{
glutBitmapCharacter(font,text[i]);
}
glutPostRedisplay();
}

X| please !!

sorry , it is my mistake -> bmp. i need to load a bmp picture by openGL ,then i can use mouse in openGL to draw a point in that pic.

here is the code:

int _xC,_yC;
void OnMouse(int button, int state, int x, int y)
{
int xMax = glutGet(GLUT_WINDOW_WIDTH);
int yMax = glutGet(GLUT_WINDOW_HEIGHT);
_xC = x;
_yC = yMax-y;

}

with this code , left click get xC and yC. use this, i want to make Point array to save x-axis and y-axis of point which is defined by left click by Onmouse code. but how to stop??? can i use right click or double click to break ???

if it can, show me how to use, please !!!

anybody has clearly defination of De Boor method ?? thank very much !!