week08_11131301賴珮語

 2025-04-10 Week08

1. 複習：T-R-T 及階層轉動
2. HW2 驗收
3. 考試：T-R-T 如何轉動
4. 主題：讀入3D模型

課堂練習1

一個3D鋼彈模型

//week08_1_loadShape_shape

size(400,400,P3D); //step03 要有P3D的OpenGL 3D功能

PShape gundam=loadShape("Gundam.obj"); //step01 讀入3D模型

translate(width/2,height/2); //把下面的東西放到畫面中心

pushMatrix(); //備份矩陣

  translate(0,100);

  scale(10,-10,10); //step04 把模型放大 shape(10)上下要倒過來

  shape(gundam,0,0); //step02 畫出3D模型

popMatrix(); //還原矩陣

課堂練習2

//week08_2_PShape_gundam_setup_draw_push_scale_shape_pop

//轉動它 要改成互動模式的程式風格

PShape gundam; //要記得把 Gundam.obj 等檔案拉進來

void setup(){

  size(400,400,P3D);

  gundam=loadShape("Gundam.obj");

}

void draw(){

  background(128);

  translate(width/2,height/2+100);

  pushMatrix();

    scale(10,-10,10);

    rotateY(radians(frameCount));

    shape(gundam,0,0);

  popMatrix();

  pushMatrix();

    translate(100,0,0);

    scale(10,-10,10);

    shape(gundam,0,0);

  popMatrix();

}

課堂練習3

//week08_3_another_obj_large_bad_mtl

PShape gundam; //要記得把 Gundam.obj 等檔案拉進來

void setup(){

  size(400,400,P3D);

  gundam=loadShape("FinalBaseMesh.obj");

}

void draw(){

  background(128);

  lights();

  translate(width/2,height/2+100);

  pushMatrix();

    scale(10,-10,10);

    rotateY(radians(frameCount));

    shape(gundam,0,0);

  popMatrix();

}

課堂練習4

//week08_4_gundam_body_head

//慢慢把切割開的模型 逐一組合起來

PShape body,head;

void setup(){

  size(400,400,P3D);

  body=loadShape("body.obj");

  head=loadShape("head.obj");

}

void draw(){

  background(255);

  translate(width/2,height/2+100);

  sphere(10);

  

  scale(10,-10,10);

  pushMatrix(); 

    translate(0,22.5); //step03 再掛回原本的地方

    rotate(radians(x)); //step02 轉動 

    //translate(x/10,y/10); //要放小x,y的座標

    //println(x/10,y/10); //印出座標 等等要取上面的數

    translate(0,-22.5);  //step01 我們頭的中心 要放在旋轉中心

    shape(head,0,0);

  popMatrix();

  shape(body,0,0);

}

float x=0,y=0;

void mouseDragged(){

  x+=mouseX-pmouseX;

  y-=mouseY-pmouseY;

}