逃離電腦圖學 Week14

 Week14-1_timer

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

    glPushMatrix();

        glRotatef( angle, 0, 0, 1);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)

{

    glutTimerFunc(500, timer, t+1);

    angle += 90;

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14");

    glutDisplayFunc(display);

    glutTimerFunc(2000, timer, 0);

    glutMainLoop();

}

Week14-2_timer_play (加了案任意鍵才開始)

#include <GL/glut.h> float angle=0; void display() { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glPushMatrix(); glRotatef(angle, 0, 0, 1); glutSolidTeapot(0.3); glPopMatrix(); glutSwapBuffers(); } void timer(int t) { glutTimerFunc(500, timer, t+1); angle += 90; glutPostRedisplay(); } void keyboard(unsigned char key, int x, int y) { glutTimerFunc(0, timer, 0); } int main(int argc, char ** argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH); glutCreateWindow("week14"); glutDisplayFunc(display); glutKeyboardFunc(keyboard); ///glutTimerFunc(2000, timer, 0); glutMainLoop(); }

角度公式

week14-3_timer_alpha_interpolation (用滑鼠控制選轉)

#include <GL/glut.h>

float angle=0, oldAngle=0, newAngle=0; ///step02-1宣告變數

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle, 0, 0, 1);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t) ///step01-1 你的timer()函式,做對應動作

{

    if(t<100) glutTimerFunc(50, timer, t+1);

    float alpha = t/100.0;

    angle = newAngle*alpha + (1-alpha) * oldAngle;

    glutPostRedisplay(); ///重畫畫面

}

void motion(int x, int y)

{

    angle = x;

    glutPostRedisplay();

}

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

{

    if(state==GLUT_DOWN) oldAngle = x; ///step02-1按下去

    if(state==GLUT_UP) newAngle = x; ///step02-1放開來

    glutPostRedisplay(); ///step02-1重畫畫面

}

void keyboard(unsigned char key, int x, int y)

{

    glutTimerFunc(0, timer, 0);

}

int main(int argc, char ** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    ///glutTimerFunc(2000, timer, 0);

    glutMainLoop();

}

Final_Project

#include <stdio.h> #include <GL/glut.h> #include "glm.h" GLMmodel * head = NULL; GLMmodel * body = NULL; GLMmodel * uparmR = NULL; GLMmodel * lowarmR = NULL; int show[4]={1,1,1,1};///用show[i]決定要不要顯示 int ID=3;///0:頭 1:身體 2:上手臂 3:下手臂 void keyboard (unsigned char key, int x, int y){ if (key=='0') ID = 0; if (key=='1') ID = 1; if (key=='2') ID = 2; if (key=='3') ID = 3; glutPostRedisplay(); } FILE * fout = NULL; FILE * fin = NULL; float teapotX=0, teapotY=0; float angle=0, angle2=0, angle3=0; void display() { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glPushMatrix(); glScalef(0.2, 0.2, 0.2);///week13-02-2 if(body==NULL){ head=glmReadOBJ("model/head.obj"); body=glmReadOBJ("model/body.obj"); uparmR=glmReadOBJ("model/uparmR.obj"); lowarmR=glmReadOBJ("model/lowarmR.obj"); ///glmUnitize(body);///week13-02-1這行之後會改 } if(ID==0) glColor3f(1,0,0);///設紅色 else glColor3f(1,1,1); if (show[0]) glmDraw(head, GLM_MATERIAL); if(ID==1) glColor3f(1,0,0);///設紅色 else glColor3f(1,1,1); if (show[1]) glmDraw(body, GLM_MATERIAL); glPushMatrix(); glTranslatef(-1.200000, +0.453333, 0); glRotatef(angle, 0, 0, 1); ///glTranslatef(teapotX, teapotY, 0); glTranslatef(1.200000, -0.453333, 0); if(ID==2) glColor3f(1,0,0);///設紅色 else glColor3f(1,1,1); if (show[2]) glmDraw(uparmR, GLM_MATERIAL); glPushMatrix(); glTranslatef(-1.946666, +0.180001, 0); //glTranslatef(teapotX, teapotY, 0); glRotatef(angle, 0, 0, 1); glTranslatef(1.946666, -0.180001, 0); if(ID==3) glColor3f(1,0,0);///設紅色 else glColor3f(1,1,1); if (show[3]) glmDraw(lowarmR, GLM_MATERIAL); glPopMatrix(); glPopMatrix(); glPopMatrix(); glColor3f(0,1,0);///放小茶壺在中心點當參考 glutSolidTeapot(0.02);///放小茶壺在中心點當參考 glutSwapBuffers(); } int oldX=0, oldY=0;///week13-03-2 void motion(int x, int y){ teapotX += (x -oldX)/150.0; teapotY -= (y -oldY)/150.0; oldX=x; oldY=y; angle = x; printf("glTranslatef(%f, %f, 0);\n",teapotX,teapotY); glutPostRedisplay(); } void mouse(int button, int state, int x, int y) { if(state==GLUT_DOWN){ teapotX = (x-150)/150.0;///teapotX = (x-150)/150.0; teapotY = (150-y)/150.0;///teapotY = (150-y)/150.0; angle = x; if(fout==NULL) fout = fopen("file4.txt", "w"); fprintf(fout, "%f %f\n", teapotX, teapotY); } display(); } int main(int argc, char** argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH); glutCreateWindow("week14"); glutDisplayFunc(display); glutMouseFunc(mouse); glutMotionFunc(motion); glutKeyboardFunc(keyboard); ///step02-2 keyboard glutMainLoop(); }