week03 蔣

 WEEK03

week03-1 translate

先到https://jsyeh.org/3dcg10下載windows.zip及data.zip

-windows.zip 解壓縮 下載\windows\Transformation.exe

-data.zip 解壓縮 下載\windows\data\很多3D模型檔

把解壓縮完的data放入解壓縮完的windows

執行\windows\Transformation.exe

-glTranslatef(x,y,z);綠色的數字,上下拉動

如果閃退,就是data.zip解錯目錄

week03-2

從codeblock開啟freeglut

刪除全部程式碼,貼上上週10行程式碼

#include <GL/glut.h>

void display()

{

    glutSolidTeapot( 0.3 );

    glutSwapBuffers( );

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week03");

    glutDisplayFunc(display);

    glutMainLoop( );

}

新增三行程式,讓茶壺變到右上

void display()

{

    glPushMatrix(); ///備份矩陣

        glTranslatef( 0.5, 0.5, 0); ///改變位置

        glutSolidTeapot( 0.3 );

    glPopMatrix(); ///還原矩陣

    glutSwapBuffers( );

}

week03-3 translate mouse

開啟新的GLUT專案

複製week03-2 translae的程式

使用global變數,來讓座標改變

#include <GL/glut.h>

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

void display()

{

    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(display);

    glutMainLoop();

}

week03-4 mouse homework

#include <GL/glut.h>

#include <stdio.h>

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

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

    glBegin(GL_LINE_LOOP);

    glVertex2f(-0.01, 0.15);

    glVertex2f(0.00, 0.29);

    glVertex2f(0.00, 0.35);

    glVertex2f(0.01, 0.37);

    glVertex2f(0.07, 0.38);

    glVertex2f(0.11, 0.38);

    glVertex2f(0.15, 0.36);

    glVertex2f(0.17, 0.29);

    glVertex2f(0.18, 0.23);

    glVertex2f(0.18, 0.21);

    glVertex2f(0.14, 0.13);

    glVertex2f(0.14, 0.13);

    glEnd();

    glBegin(GL_LINE_LOOP);///橘色是空心

    glVertex2f(-0.28, 0.13);

    glVertex2f(-0.31, 0.17);

    glVertex2f(-0.35, 0.21);

    glVertex2f(-0.35, 0.27);

    glVertex2f(-0.35, 0.33);

    glVertex2f(-0.31, 0.38);

    glVertex2f(-0.27, 0.39);

    glVertex2f(-0.23, 0.37);

    glVertex2f(-0.22, 0.31);

    glVertex2f(-0.19, 0.25);

    glVertex2f(-0.18, 0.21);

    glVertex2f(-0.17, 0.19);

    glVertex2f(-0.16, 0.17);

    glEnd();

    glBegin(GL_POLYGON);///紫色是實心

    glVertex2f(-0.21, -0.13);

    glVertex2f(-0.27, -0.05);

    glVertex2f(-0.29, 0.03);

    glVertex2f(-0.29, 0.08);

    glVertex2f(-0.21, 0.11);

    glVertex2f(-0.14, 0.11);

    glVertex2f(-0.05, 0.11);

    glVertex2f(0.11, 0.11);

    glVertex2f(0.18, 0.07);

    glVertex2f(0.18, 0.01);

    glVertex2f(0.18, -0.03);

    glVertex2f(0.14, -0.07);

    glVertex2f(0.06, -0.11);

    glVertex2f(0.03, -0.13);

    glVertex2f(-0.08, -0.13);

    glVertex2f(-0.21, -0.12);

    glEnd();

///藍色可以更動

    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(display);

    glutMainLoop();

}