10160756 廖云瑄week04

 week04

先到https://jsyeh.org/3dcg10/下載[data][win32]

到資料夾解壓縮[win32]再把[data]放進去

點開transformation.exe

[了解如何旋轉]

使用右手比讚，把拇指當作轉動軸，剩下四隻手指頭是轉動的方向

Y軸向上，X軸為順時針方向

Z軸其實是於X軸和Y軸之間 Z軸會有3D的效果

一樣是右手規律 逆時針

[week04-2]

打開codeblocks開新專案

File,New,Project,OpenGL

選擇OpenGL Project打好標題後選擇桌面

打程式 讓茶壺變化

再從原本的範例中複製這兩段程式碼

並加上myLight();

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 };

void myLight()

{

 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);

}

swap rotate translate

調整數據讓車子移動跟長胖

[week04-3]

開新檔案貼上week04-1的程式

  glColor3f(0,0,1);

讓茶壺變成藍色

再新增一個黃色茶壺 

glPushMatrix();

        glRotatef(angle,0,1,0);

        glTranslatef(0.5,0,0);

        glColor3f(1,1,0);

        glTranslatef(0,0.5,0);

        glutSolidTeapot(0.3);

    glPopMatrix();