void setup(){
size(400,400,P3D);//開啟3D模式
}
void draw(){
background(128);//灰色背景
translate(mouseX,mouseY);
rotateY(radians(frameCount));
box(200);//大小200的3D盒子
}
//week03-2-2D-point-line-ellipse
size(400,400);
stroke(255,0,0); //紅色
strokeWeight(8);//筆觸的權重大小
point(200,200);//預設點,只有1 pixel
line(200,0,400,100);//畫線
rect(50,50,100,100);//四邊形 x,y,w,h
fill(255,255,0); //黃色
ellipse(200,200,50,80);//橢圓 x,y,w,h
size(400,400);
rect(50,50,100,100);
rect(50,200,100,100,20);
rect(200,50,100,100,10,20,30,40);
//week03-4-stroke-strokeweight-fill
void setup(){
size(400,400);
}
float startX=10,startY=10;
float stopX=390,stopY=390;
void draw(){
ellipse(startX,startY,10,10);
ellipse(stopX,stopY,10,10);
float midX=lerp(startX,stopY,frameCount/200.0);
float midY=lerp(startY,stopY,frameCount/200.0);
//frameCount 是第幾個frame 1小時=60分,1分=60秒,1秒=60frame
ellipse(midX,midY,10,10);
}
//week03-7-bezier
size(400,400);
int x1=340, x2=40, x3=360, x4=60;
int y1=80, y2=40, y3=360, y4=320;
line(x1,y1,x2,y2);
line(x3,y3,x4,y4);
bezier(x1,y1,x2,y2,x3,y3,x4,y4);//貝是曲線
//week03-8-bezier-equation
void setup(){
size(400,400);
}
int x1=340, x2=40, x3=360, x4=60;
int y1=80, y2=40, y3=360, y4=320;
void draw(){
background(255);
line(x1,y1,x2,y2);
line(x3,y3,x4,y4);
bezier(x1,y1,x2,y2,x3,y3,x4,y4);//貝氏曲線
float t=frameCount/200.0%1;
float t2=1-t;
float x=x1*t2*t2*t2 + 3*x2*t*t2*t2 + 3*x3*t*t*t2 + x4*t*t*t;
float y=y1*t2*t2*t2 + 3*y2*t*t2*t2 + 3*y3*t*t*t2 + y4*t*t*t;
ellipse(x,y,10,10);
}
//week03-8b-bezier-equation
只改控制點座標
int x1=120, x2=320, x3=320, x4=120;
int y1=80, y2=20, y3=300, y4=300;
//week03-09-3D-random-point
float[] x=new float[1000];
float[] y=new float[1000];
void setup(){
size(400,400,P3D);
for(int i=0;i<1000;i++){
x[i]=random(400);
y[i]=random(400);
}
}
void draw(){
background(0);//黑色背景
stroke(255);//白色線條
for(int i=0;i<1000;i++){
point(x[i],y[i]);//現在只有2D的點,還差z座標
}
}
//week03-10-3D-random-point
float[] x=new float[5000];
float[] y=new float[5000];
float[] z=new float[5000];
void setup(){
size(400,400,P3D);
for(int i=0;i<5000;i++){
x[i]=random(400);
y[i]=random(400);
z[i]=random(400);
}
}
void draw(){
background(0);//黑色背景
stroke(255);//白色線條
translate(0,0,mouseY);
for(int i=0;i<5000;i++){
point(x[i],y[i],z[i]);//現在只有2D的點,還差z座標
}
}
//week03-11-sphere-translate-rotateY
void setup(){
size(400,400,P3D);
}
void draw(){
background(128);
translate(mouseX,mouseY);
rotateY(radians(frameCount));
sphere(200);
}
//week03-12-sphere-translate-rotateY
加上lights();//打光
//week3-13-3D
void setup(){
size(600,400,P3D);
}
void draw(){
background(128);
lights();
pushMatrix();//備份矩陣
translate(300,100);//習慣上要我又再縮一個單位
sphere(100);
popMatrix();//還原矩陣
//要備份矩陣,還原矩陣,就不會出錯
pushMatrix();
translate(100,100);
sphere(100);
popMatrix();
}
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