/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://playgramming.sketchpad.cc/sp/pad/view/ro.kIJ9PCOYq$s/rev.12
 * 
 * authors: 
 *   Devon Scott-Tunkin

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



int brushOpacity = 50;
int brushAngle = 45;
int brushScale = 5;
color brushColor = color(0);

void setup() {  // this is run once.   
    size(300, 300); 
    smooth();

} 

void draw() {  // this is run repeatedly. 
    if (keyPressed) {
      if (keyCode == UP) {
        if (brushOpacity < 255) {
          brushOpacity = brushOpacity + 1;
        }
      }
      if (keyCode == DOWN) {
        if (brushOpacity > 0){
          brushOpacity = brushOpacity - 1;
        }
      }
      if (key == 'w') {
        brushScale = brushScale + 1;
      }
      if (key == 's') {
        if (brushScale > 0) {
          brushScale = brushScale - 1;
        }
      }
      if (key == 'a') {
        brushAngle = brushAngle - 5;
      }
      if (key == 'd') {
        brushAngle = brushAngle + 5;
      }
    }
    if (mousePressed) {
      if (mouseButton == LEFT) {
        noStroke();
        fill(brushColor, brushOpacity);
        pushMatrix();
        translate(mouseX, mouseY);
        rotate(radians(brushAngle));
        scale(brushScale, brushScale);
        triangle(-1, 1, 0, -1,1, 1);
        popMatrix();
      }
      if (mouseButton == RIGHT) {
        brushColor = get(mouseX, mouseY);
      }
    }
    for (int angle = 0; angle < 360; angle = angle + 1) {
      colorMode(HSB, 360, 100, 100, 100);
      pushMatrix();
      translate(30, 30);
      rotate(radians(angle));
      stroke(angle, 100, 100, 100);
      line(0, 0, 30, 0);
      popMatrix();
      
    }
    colorMode(RGB);  
}