void setup(){
size(500,500);
}
void draw(){
if(mousePressed) background(255,0,0);
else background(0,255,0);
}
mousePressed按下滑鼠
void setup(){
size(500,500);
}
void draw(){
if(mousePressed) line(mouseX,mouseY,0,0);
}
這樣可以從角落畫線到滑鼠點的位子
void setup(){
size(500,500);
}
void draw(){
if(mousePressed) line(mouseX,mouseY,pmouseX,pmouseY);
}
pmouse ：前一個滑鼠的位子
前一個位子+現在的位子可以連續連線，做出畫線的感覺
void setup(){
size(500,500);
fill(255,0,0); rect(0,0,100,100);//red (畫左上紅色選擇區)
fill(0,255,0); rect(0,100,100,100);//green (畫左上綠色選擇區)
}
void draw(){
if(mousePressed) {
if(mouseX<100){
if(mouseY<100) stroke(255,0,0);//red
else if(mouseY<200) stroke(0,255,0);//green
}
else line(mouseX,mouseY,pmouseX,pmouseY);
}
}
做出類似小畫家選顏色的部分
void setup(){
size(500,500);
rect(0,0,100,100); ellipse(50,50,8,8);//大圓 (粗選擇區)
rect(0,100,100,100); ellipse(50,150,4,4);//中圓 (中選擇區)
}
void draw(){
if(mousePressed) {
if(mouseX<100){
if(mouseY<100) strokeWeight(8);//粗線
else if(mouseY<200) strokeWeight(4);//中線
}
else line(mouseX,mouseY,pmouseX,pmouseY);
}
}
做出類似小畫家選筆粗細的部分
void setup(){
size(500,500);
for(int i=1;i<8;i++){
rect(0,i*50,50,50);
ellipse(25,25+i*50,i,i);
}
}
void draw(){
if(mousePressed) {
if(mouseX<50){
for(int i=1;i<8;i++){
if(mouseY>i*50&&mouseY<i*50+50) strokeWeight(i);
}
}
else line(mouseX,mouseY,pmouseX,pmouseY);
}
}
用for迴圈做出更多粗細選擇
void setup(){
size(500,500);
fill(#FF0505); rect(0,50,50,50);
fill(#FFB005); rect(0,100,50,50);
fill(#D0FF05); rect(0,150,50,50);
fill(#05FF24); rect(0,200,50,50);
fill(#05DCFF); rect(0,250,50,50);
fill(#051BFF); rect(0,300,50,50);
fill(#7905FF); rect(0,350,50,50);
fill(#FF05EF); rect(0,400,50,50);
}
void draw(){
if(mousePressed) {
if(mouseX<50){
if(mouseY>1*50&&mouseY<1*50+50) stroke(#FF0505);
if(mouseY>2*50&&mouseY<2*50+50) stroke(#FFB005);
if(mouseY>3*50&&mouseY<3*50+50) stroke(#D0FF05);
if(mouseY>4*50&&mouseY<4*50+50) stroke(#05FF24);
if(mouseY>5*50&&mouseY<5*50+50) stroke(#05DCFF);
if(mouseY>6*50&&mouseY<6*50+50) stroke(#051BFF);
if(mouseY>7*50&&mouseY<7*50+50) stroke(#7905FF);
if(mouseY>8*50&&mouseY<8*50+50) stroke(#FF05EF);
}
else line(mouseX,mouseY,pmouseX,pmouseY);
}
}
color[] c = {#FF0505,#FFB005,#D0FF05,#05FF24,#05DCFF,#051BFF,#7905FF,#FF05EF};//顏色陣列
void setup(){
size(500,500);
for(int i=0;i<8;i++){
fill(255); rect(0,i*50,50,50); ellipse(25,25+i*50,i+1,i+1);//筆刷粗細圖示列表
fill(c[i]); rect(450,i*50,50,50);//顏色圖示列表
}
}
void draw(){
if(mousePressed) {
if(mouseX<50){
for(int i=0;i<8;i++){
if(mouseY>i*50&&mouseY<i*50+50) strokeWeight(i+1);//筆刷粗細
}
}
else if(mouseX>450){
for(int i=0;i<8;i++){
if(mouseY>i*50&&mouseY<i*50+50) stroke(c[i]);//顏色
}
}
else line(mouseX,mouseY,pmouseX,pmouseY);
}
}
利用迴圈將兩者結合作出小畫家
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