hw2 01160511 郭育平

void setup(){

  size(800,600);

}

void draw(){

  line(mouseX, mouseY, pmouseX, pmouseY);

}畫圖但不能控制滑鼠，也沒有背景

void setup(){

  size(800,600);

  background(#89BBE5);

}

void draw(){

  if(mousePressed)

  line(mouseX, mouseY, pmouseX, pmouseY);

}

畫圖可以控制滑鼠也有背景

void setup(){

  size(800,600);

  background(#89BBE5);

  stroke(#762067);

}

void draw(){

  fill(0,255,0); rect(0,0,100,100);

  fill(0,0,255); rect(0,100,100,100);

  fill(255,255,0); rect(0,200,100,100);

}

void mouseDragged(){

  line(mouseX, mouseY, pmouseX, pmouseY);

}

void mousePressed(){

  if(mouseX<100&& mouseY<100){stroke(0,255,0);}

  else if(mouseX<100&& mouseY<200){stroke(0,0,255);}

  else if(mouseX<100&& mouseY<300){stroke(255,255,0);}

}

多了背景的功能以及，筆觸的顏色
並且多了三個範圍的格子可以選擇顏色
利用選範圍的方式，填取顏色
分別為綠,藍,黃
void mouseDragged(){//按壓延伸的函式
void mousePressed(){//按壓的函式

void setup(){

  size(800,600);

  background(255);

  stroke(#762067);

}

float myTsuTsuDer=1;

color myStroke=color(0);

void draw(){

  stroke(0); strokeWeight(1);

  fill(0,255,0); rect(0,0,100,100);

  fill(0,0,255); rect(0,100,100,100);

  fill(255,255,0); rect(0,200,100,100);

  stroke(myStroke); strokeWeight(myTsuTsuDer);

}

void mouseDragged(){

  line(mouseX, mouseY, pmouseX, pmouseY);

}

void mousePressed(){

  if(mouseX<100&& mouseY<100){myStroke=color(0,255,0);}

  else if(mouseX<100&& mouseY<200){myStroke=color(0,0,255);}

  else if(mouseX<100&& mouseY<300){myStroke=color(255,255,0);}

  if(mouseX>700) myTsuTsuDer=mouseY/30;

}

可以用不同的顏色，並且控制粗細~~

PImage imgBG;

PImage imgBlack;

void setup() {

  size(800, 600);

  imgBG=loadImage("colorBG.jpg");

  imgBlack=createImage(800, 600, ARGB);

  imgBlack.loadPixels();

  for(int i = 0; i< imgBlack.pixels.length; i++) {

    imgBlack.pixels[i] = color(0,0,0,255);

  }

  imgBlack.updatePixels();

}

void draw() {

   image(imgBG, 0,0,width, height);

  image(imgBlack, 0,0,width, height);

}

void mouseDragged(){

  imgBlack.loadPixels();

  imgBlack.pixels[mouseX+mouseY*width] = color(0,0,0,0);

  

  imgBlack.updatePixels();

}

可以刮畫但是是點狀

void setup() {

  size(800, 600);

  colorMode(HSB, 800);

  background(0);

  strokeWeight(2);

}

void draw(){

  if(mousePressed){

  stroke (mouseX,mouseY, 800);

  line(mouseX,mouseY,pmouseX,pmouseY);

  }

}

同學利用另外的一種方式刮畫