week03-1
//week03-1 _P3D_translate_rotateY_radians_box
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
}
week03-2
//week03-2_2D_point_line_rect_ellipse
size(400,400); //2D座標系統
stroke(255,0,0); //筆觸是紅色
strokeWeight(8); //筆觸權重大小
point(200,200); //預設的點，只有1pixel
line(200,0,400,100); //畫線
rect(50,50,100,100); //四邊形x,y,w,h
fill(255,255,9); //填黃色
ellipse(300,200,50,80); //橢圓x,y,w,h
week03-3
//week03-3_rect_corners
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
//week03-4_stroke_strokeWeight_fill
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);
}
}
week03-4b
//week03-4b_stroke_strokeWeight_fill
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);
}
}
week03-5
//week03-5_mouse_cat_x_y
void setup(){
size(400,400);
}
float x,y;
void draw(){
background(255);
ellipse(x,y,40,40);
ellipse(mouseX,mouseY,40,20);
x=(x*14+mouseX)/15;
y=(y*14+mouseY)/15;
}//新的座標，舊的座標*14，目標*1
week03-6
//week03-6_lerp_frameCount
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);
//lerp()可以做內插，要給他0.0~1.0之間的數
float midX=lerp(startX,stopY,frameCount/200.0);
float midY=lerp(startX,stopY,frameCount/200.0);
//frameCount是 第幾個frame 1hr=60min 1min=60s
ellipse(midX,midY,10,10);
}
week03-7
//week03-7_bezier_curve
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); //貝式曲線
week03-8
//week03-8_bezier_
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); //貝式曲線
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
//week03-8b_bezier_equation
void setup(){
size(400,400);
}
int x1=120, x2=320, x3=320, x4=120;
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); //貝式曲線
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);
}
week03-9
//week03-9_3D_random_point
float []x=new float[5000];
float []y=new float[5000];
void setup(){
size(400,400,P3D);
for(int i=0;i<5000;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<5000;i++){
point(x[i],y[i]);
}
}
week03-10
//week03-10_3D_random_point_translate
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); //白色線條
translate(0,0,mouseY);
for(int i=0;i<5000;i++){
point(x[i],y[i],z[i]);
}
}
week03-11
//week03-11_3D_sphere
void setup(){
size(400,400,P3D);
}
void draw(){
background(128);
translate(mouseX,mouseY);
rotateY(radians(frameCount));
sphere(200);
}
week03-12
//week03-12_3D_sphere_lights
void setup(){
size(400,400,P3D);
}
void draw(){
background(128);
lights();
translate(mouseX,mouseY);
rotateY(radians(frameCount));
sphere(200);
}
week03-13
//week03-13_3D
void setup(){
size(600,400,P3D);
}
void draw(){
background(128);
lights();
pushMatrix(); //備份矩陣
translate(300,100);
sphere(100);
popMatrix(); //還原矩陣
pushMatrix();
translate(100,100);
sphere(100);
popMatrix();
}
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