week03 用mouse寫作業

 week 03

第一堂課

前往https://jsyeh.org/3dcg10//

下載deta win32

解壓後把deta加進windows

第2堂課

創立一個GLUT專案,把原本的170行程式刪掉,並將上周的10行程式貼上

#include <GL/glut.h>

void dispaly()

{

 glutSolidTeapot( 0.3 );

 glutSwapBuffers();

}

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

{

  glutInit(&argc, argv);

  glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

  glutCreateWindow("week03");

 

  glutDisplayFunc(dispaly);

  glutMainLoop();

}

    

移動(增加程式碼)

{

 glPushMatrix();

 glTranslatef( 0.5, 0.5, 0);

 glutSolidTeapot( 0.3 );

 glPopMatrix();

 glutSwapBuffers();

}

第3堂課

開一個新的project week03-2_translate_mouse

把剛剛的專案程式貼上

用滑鼠移動

#include <GL/glut.h>

float X=0, Y=0, Z=0;

void dispaly()

{

 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

 glPushMatrix();

 glTranslatef( X, Y, Z );

 glutSolidTeapot( 0.3 );

 glPopMatrix();

 glutSwapBuffers();

}

void mouse( int button, int state, int x, int y )

{

    X = (x-150)/150.0;

    Y = -(y-150)/150.0;

}

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

{

  glutInit(&argc, argv);

  glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

  glutCreateWindow("week03");

  glutMouseFunc(mouse);

  glutDisplayFunc(dispaly);

  glutMainLoop();

}

開新專案Project week03-3_homework

老師的範例

#include <GL/glut.h>

#include <stdio.h>

float X=0, Y=0, Z=0;

void dispaly()

{

 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

 glutSwapBuffers();

}

void mouse( int button, int state, int x, int y )

{

    X = (x-150)/150.0;

    Y = -(y-150)/150.0;

if(state==GLUT_DOWN) printf("    glVertex2f(%.2f, %.2f);\n", x, y);

}

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

{

  glutInit(&argc, argv);

  glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

  glutCreateWindow("week03");

  glutMouseFunc(mouse);

  glutDisplayFunc(dispaly);

  glutMainLoop();

}