적

프로그램

//Y軸回転
float rotateY = 0;

//画角
float fov = 3;

//回転速度
float speed = 0.01f;

//X軸回転
float rotateX = 0;

//円柱半径
float radius = 0;

//円柱高さ
float leng = 0;

//アニメーション番号
int aniNum = 0;

//貼り付ける画像
PImage tex;

void setup() {
  size(1600, 800, P3D);
  frameRate(30);

  tex = loadImage("Zoetrope.png");
}

void draw() {
  background(0);
  lights();
  perspective(PI/fov, (float)width/height, 10, 1000);

  //操作説明
  textSize(25);
  text(" A :accel\n D :decelerate\n W :Just speed\n S :Stop\n Click :Zoom", 
    0, height-250);

  translate(width/2, height/2+100, 100);

  noStroke();
  fill(255);

  rotateX(rotateX);
  rotateY(rotateY);

  Cylinder(leng, radius);

  rotateY += speed;

  //アニメーションスウィッチ
  switch(aniNum) {

  case 0:
    radius++;
    aniNum++;
    break;

  case 1:
    leng++;
    if (leng >= 250) aniNum++;
    break;

  case 2:
    radius ++;
    if (radius >= 150) aniNum++;
    break;

  case 3:
    rotateX -= PI/180;
    if (rotateX <= -PI/4) aniNum++;
    break;
  }
}

//円柱メソッド
//   Cylinder( 長さ , 半径 )
void Cylinder(float leng, float radius) {

  float x, y, z;

  pushMatrix();

  //底面
  beginShape(TRIANGLE_FAN);
  y = leng / 2;
  vertex(0, y, 0);
  for (int deg = 0; deg <= 360; deg += 2) {
    x = cos(radians(deg)) * radius;
    z = sin(radians(deg)) * radius;
    vertex(x, y, z);
  }
  endShape(); 

  //側面
  beginShape(QUAD_STRIP);
  texture(tex);
  textureMode(NORMAL);

  for (int deg = 0; deg <= 360; deg += 1) {
    x = cos(radians(deg)) * radius;
    y = -leng / 2;
    z = sin(radians(deg)) * radius;
    normal(x, 0, z);
    vertex(x, y, z, deg/360f, 0);

    x = cos(radians(deg)) * radius;
    y = leng / 2;
    z = sin(radians(deg)) * radius;
    normal(x, 0, z);
    vertex(x, y, z, deg/360f, 1);
  }
  endShape();

  popMatrix();
}

void keyPressed() {
  //a で加速　d　で減速  w でいい感じの速度　d で停止
  if (key == 'a') speed += 0.01f;
  else if (key == 'd') speed -= 0.02f;
  else if (key == 'w') speed = 0.63f;
  else if (key == 's') speed = 0;
}

void mousePressed() {
  //画角切り替え
  if (mouseButton == LEFT) {
    fov = (fov+6)%12; //fovの値を3と9交互にする式
  }
}

사용 이미지