HW#4 revised

//FAN LAN

//HW#4 revised

//September 18, 2019

//for cloud movement

float circleX=0;

float xspeed = 10; 

void setup() {

  size(600, 600);

  //background(255, 208, 126);

  noStroke(); 

  smooth();

}

void draw() {

  drawSky();

  drawLandform();

  drawTrees();

  drawSun();

  drawClouds();

}

void drawSky() {

  color skycolor = color(13, 238, 252); //use the colour yellow

  fill(skycolor);     

  rect(0, 0, width, height/2);

}

void drawLandform() {

  color landcolor = color(252, 252, 215); 

  fill(landcolor);     

  rect(height/2, 0, width, height/2);

}

void  drawTrees() {

  //draw trunk

  color trunkcolor = color(161, 113, 64); 

  fill(trunkcolor);

  rectMode(RADIUS);

  for (int x=50; x < width-50; x+=70) {

    int y=320; 

    rectMode(RADIUS);

    int trunkWeight=6; 

    int trunkHeight=35; 

    rect(x, y, trunkWeight, trunkHeight);

  }

  //draw canopy

  color canopycolor = color(99, 117, 54); 

  fill(canopycolor);

  for (int x=50; x < width-50; x+=70) {

    int CanopyRadius=50; //canopy size

    int y=300;

    ellipse(x, y, CanopyRadius, CanopyRadius);

  }

}

void drawSun() {

  fill (252, 130, 15);

  int SunRadius=40;

  ellipse(width/2, height/3, SunRadius, SunRadius);

}

void  drawClouds() {

  color white= color(255, 255, 255);

  fill(white);    //use the colour and draw clouds

  int a=70; //radius of first ellipse

  int b=90;//radius of second ellipse

  int y=75;

  ellipse(circleX+a/2, y, a, a);

  ellipse(a+circleX, y, b, b);

  ellipse(a+a/2+circleX, y, a, a);

  circleX=circleX + xspeed;

  if (circleX+a+a/2>width||circleX<0) {

    xspeed=xspeed*-1; //turn around

  }

}