真week14

 week14計時器timer、內插

主題: 切換關節 、移動、旋轉整合打光、貼圖、timer計時器、內插動作

先裝 Git程式, 下載clone

git clone 網址

今天的程式: timer

先裝 freeglut 

 glutTimerFunc

另外要準備好 void timer

開啟CodeBlocks: File-New-Project, GLUT專案 week14-1_timer 專案

Week14-1_timer

可以移動滑鼠調整觀看的角度

#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) ///step01-1 你的 timer()函式,做對應動作

{

    glutTimerFunc(500, timer, t+1); ///step01-1 設定下一個鬧鐘

    angle += 90; ///增加90度

    glutPostRedisplay(); ///重畫畫面

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14");

    glutDisplayFunc(display);

    glutTimerFunc(2000, timer, 0); ///step01-1 設定timer函式

    glutMainLoop();

}

投影種類

Ortho垂直投影 上下左右四面投影 MAYA的四宮格

Frustum臺狀投影

Perspective透視投影

/*
	* GLUT Shapes Demo
	*
	* Written by Nigel Stewart November 2003
	*
	* This program is test harness for the sphere, cone
	* and torus shapes in GLUT.
	*
	* Spinning wireframe and smooth shaded shapes are
	* displayed until the ESC or q key is pressed. The
	* number of geometry stacks and slices can be adjusted
	* using the + and - keys.
	*/
	#ifdef __APPLE__
	#include <GLUT/glut.h>
	#else
	#include <GL/glut.h>
	#endif
	#include <stdlib.h>
	static int slices = 16;
	static int stacks = 16;
	/* GLUT callback Handlers */
	static void resize(int width, int height)
	{ ///ar = aspective ratio 長寬比
	const float ar = (float) width / (float) height;
	glViewport(0, 0, width, height);
	glMatrixMode(GL_PROJECTION);///切換投影矩陣
	glLoadIdentity();///設成單位矩陣
	///glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
	glOrtho(-ar*3, ar*3, -1.0*3, 1.0*3, 2.0, 100.0);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity() ;///設成單位矩陣
	}
	static void display(void)
	{
	const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
	const double a = t*90.0;
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glColor3d(1,0,0);
	glPushMatrix();
	glTranslated(-2.4,1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutSolidSphere(1,slices,stacks);
	glPopMatrix();
	glPushMatrix();
	glTranslated(0,1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutSolidCone(1,1,slices,stacks);
	glPopMatrix();
	glPushMatrix();
	glTranslated(2.4,1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutSolidTorus(0.2,0.8,slices,stacks);
	glPopMatrix();
	glPushMatrix();
	glTranslated(-2.4,-1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutWireSphere(1,slices,stacks);
	glPopMatrix();
	glPushMatrix();
	glTranslated(0,-1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutWireCone(1,1,slices,stacks);
	glPopMatrix();
	glPushMatrix();
	glTranslated(2.4,-1.2,-6);
	glRotated(60,1,0,0);
	glRotated(a,0,0,1);
	glutWireTorus(0.2,0.8,slices,stacks);
	glPopMatrix();
	glutSwapBuffers();
	}
	static void key(unsigned char key, int x, int y)
	{
	switch (key)
	{
	case 27 :
	case 'q':
	exit(0);
	break;
	case '+':
	slices++;
	stacks++;
	break;
	case '-':
	if (slices>3 && stacks>3)
	{
	slices--;
	stacks--;
	}
	break;
	}
	glutPostRedisplay();
	}
	static void idle(void)
	{
	glutPostRedisplay();
	}
	const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
	const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
	const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
	const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };
	const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };
	const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };
	const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
	const GLfloat high_shininess[] = { 100.0f };
	/* Program entry point */
	int main(int argc, char *argv[])
	{
	glutInit(&argc, argv);
	glutInitWindowSize(640,480);
	glutInitWindowPosition(10,10);
	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
	glutCreateWindow("GLUT Shapes");
	glutReshapeFunc(resize);
	glutDisplayFunc(display);
	glutKeyboardFunc(key);
	glutIdleFunc(idle);
	glClearColor(1,1,1,1);
	glEnable(GL_CULL_FACE);
	glCullFace(GL_BACK);
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_LESS);
	glEnable(GL_LIGHT0);
	glEnable(GL_NORMALIZE);
	glEnable(GL_COLOR_MATERIAL);
	glEnable(GL_LIGHTING);
	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
	glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
	glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
	glLightfv(GL_LIGHT0, GL_POSITION, light_position);
	glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
	glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
	glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
	glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
	glutMainLoop();
	return EXIT_SUCCESS;
	} 利用Excel來示範,什麼是alpha內插 #include <stdio.h>///要檔案的Input/Output #include <GL/glut.h> #include "glm.h"///week13_step02-2 ///再把glm.cpp 在左邊 Add files 加進去 GLMmodel * head = NULL;///week13_step02-2 GLMmodel * body = NULL;///week13_step02-2 GLMmodel * uparmR = NULL; GLMmodel * lowarmR = NULL; //int show[4] = {1,0,0,0}; week13_step03-1 int show[4] = {1,1,1,1};///week14_step03-1 int ID=2;///week14_step03-1 設定關節 ID float teapotX=0,teapotY=0,angle=0; FILE * fout = NULL; ///step02-1 FILE * fin = NULL; ///step02-1 void keyboard(unsigned char key,int x,int y) {     if(key=='0') ID=0; ///week14_step03-1  //show[0] = ! show[0]; week13     if(key=='1') ID=1; ///week14_step03-1  //show[1] = ! show[1]; week13     if(key=='2') ID=2; ///week14_step03-1  //show[2] = ! show[2]; week13     if(key=='3') ID=3; ///week14_step03-1  //show[3] = ! show[3]; week13     glutPostRedisplay(); } void display() {     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);     if(head==NULL)     {         head = glmReadOBJ("model/head.obj");///week13_step02-2         body = glmReadOBJ("model/body.obj");         uparmR = glmReadOBJ("model/uparmR.obj");         lowarmR = glmReadOBJ("model/lowarmR.obj");         ///glmUnitize(head);///week13_step02-2 之後改     }     glPushMatrix();         glScalef(0.3,0.3,0.3);///week13_step02-3         glPushMatrix();///week13_step03-2             //glTranslatef(teapotX,teapotY,0);///week13_step03-2             if(ID==0) glColor3f(1,0,0); ///week14_step03-1             else glColor3f(1,1,1); ///week14_step03-1             if(show[0]) glmDraw(head,GLM_MATERIAL);///week13_step02-3         glPopMatrix();///week13_step03-2         if(ID==1) glColor3f(1,0,0); ///week14_step03-1         else glColor3f(1,1,1); ///week14_step03-1         if(show[1]) glmDraw(body,GLM_MATERIAL);///week13_step02-2         glPushMatrix(); ///week14_step03-2             ///glTranslatef(teapotX,teapotY,0);  ///week14_step03-2 要設定 TRT             glTranslatef(-1.360000, +0.360000, 0); ///week14_step03-2             glRotatef(angle,0,0,1); ///week14_step03-2             glTranslatef(1.360000, -0.360000, 0); ///week14_step03-2             if(ID==2) glColor3f(1,0,0); ///week14_step03-1             else glColor3f(1,1,1); ///week14_step03-1             if(show[2]) glmDraw(uparmR,GLM_MATERIAL);///week13_step02-3             glPushMatrix(); ///week14_step03-2                     ///glTranslatef(teapotX,teapotY,0);  ///week14_step03-2 要設定 TRT                 glTranslatef(-1.959999, +0.080000, 0); ///week14_step03-2                 glRotatef(angle,0,0,1); ///week14_step03-2                 glTranslatef(1.959999, -0.080000, 0); ///week14_step03-2                 if(ID==3) glColor3f(1,0,0); ///week14_step03-1                 else glColor3f(1,1,1); ///week14_step03-1                 if(show[3]) glmDraw(lowarmR,GLM_MATERIAL);///week13_step02-3             glPopMatrix();         glPopMatrix();     glPopMatrix();     glColor3f(0,1,0); ///week14_step03-2 綠色的     glutSolidTeapot(0.02); ///week14_step03-2     glutSwapBuffers(); } int oldX=0, oldY=0;///week13_step03-2 void mouse(int button,int state,int x,int y) {     if(state==GLUT_DOWN)     {         oldX = x;         oldY = y;     } } void motion(int x,int y) {     teapotX += (x - oldX)/150.0;     teapotY -= (y - oldY)/150.0;     printf("glTranslatef(%f, %f, 0);\n",teapotX,teapotY); ///week14_step03-2     angle += x-oldX; ///week14_step03-2     oldX = x;     oldY = y;     glutPostRedisplay(); } int main(int argc, char**argv) {     glutInit( &argc, argv );     glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);     glutCreateWindow("week14");     glutMotionFunc(motion);///week13_step03-2     glutDisplayFunc(display);     glutKeyboardFunc(keyboard);     glutMouseFunc(mouse);     glutMainLoop();