課堂作業一
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));//對Y旋轉
box(200);//大小200的3D Box
}
課堂作業二
size(400,400);//2D座標系統
stroke(255,0,0);//筆觸是紅色
strokeWeight(8);//筆觸的權重大小
point(200,200);//預設的點，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);//填黃色
ellipse(300,200,50,80);//橢圓x,y,w,h
課堂作業三
size(400,400);
rect(50,50,100,100);
rect(50,200,100,100,20);
rect(200,50,100,100,10,20,30,40);
void setup(){
size(500,500);
}
void draw(){
//background(255);
fill(255,0,0);
rect(0,0,50,50);
fill(255,255,0);
rect(0,50,50,50);
fill(0,255,0);
rect(0,100,50,50);
fill(0,0,255);
rect(0,150,50,50);
if(mousePressed)line(mouseX,mouseY,pmouseX,pmouseY);
}
void mousePressed(){
if(mouseX<50){
if(mouseY<50) stroke(255,0,0);
else if(mouseY<100) stroke(255,255,0);
else if(mouseY<150) stroke(0,255,0);
else if(mouseY<200) stroke(0,0,255);
}
}
void setup(){
size(500,500);
}
void draw(){
//background(255);
stroke(0);
fill(255,0,0);
rect(0,0,50,50);
fill(255,255,0);
rect(0,50,50,50);
fill(0,255,0);
rect(0,100,50,50);
fill(0,0,255);
rect(0,150,50,50);
stroke(myStroke);
if(mousePressed)line(mouseX,mouseY,pmouseX,pmouseY);
}
color myStroke;
void mousePressed(){
if(mouseX<50){
if(mouseY<50) myStroke=color(255,0,0);
else if(mouseY<100) myStroke=color(255,255,0);
else if(mouseY<150) myStroke=color(0,255,0);
else if(mouseY<200) myStroke=color(0,0,255);
}
}
課堂作業五
void setup(){
size(400,400);
}
float x,y;//貓的座標
void draw(){
background(255);
ellipse(mouseX,mouseY,40,20);
ellipse(x,y,40,40);
x=(x*14+mouseX)/15;
y=(y*14+mouseY)/15;
}//新的座標，就的座標*14，目標*1
課堂作業六
void setup(){
size(400,400);
}
float startX=10,startY=10;
float stopX=390,stopY=290;
void draw(){
background(255);
ellipse(startX,startY,10,10);
ellipse(stopX,stopY,10,10);
float midX=lerp(startX,stopX,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=60 frame
ellipse(midX,midY,10,10);
}
課堂作業七
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);//貝氏曲線
課堂作業八
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);
}
只改控制點的座標
void setup(){
size(400,400);
}
int x1=120,x2=320,x3=320,x4=120;//只改控制點的座標
int y1=80,y2=20,y3=300,y4=300;
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);
}
課堂作業九
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);
for(int i=0;i<1000;i++){
point(x[i],y[i]);//現在只有2D的點，還差z座標
}
}
課堂作業十
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(-400,400);
}
}
void draw(){
background(0);//黑色背景
stroke(255);
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
}
}
課堂作業十一
void setup(){
size(400,400,P3D);
}
void draw(){
background(128);//灰色背景
translate(mouseX,mouseY);
rotateY(radians(frameCount));
sphere(200);
}
課堂作業十二
void setup(){
size(400,400,P3D);
}
void draw(){
background(128);//灰色背景
lights();//加上打光
translate(mouseX,mouseY);
rotateY(radians(frameCount));
sphere(200);
}
課堂作業十三
void setup(){
size(600,400,P3D);
}
void draw(){
background(128);
lights();
pushMatrix();//備份矩陣
translate(300,100);//習慣上要往右縮排
rotateY(radians(frameCount));
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);
rotateY(radians(frameCount));
sphere(100);
popMatrix();
}
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