Animation
This is my code:
import element.*;
import java.awt.Color;
public class jonesp_assign1
{
static DrawingWindow d;
public static void main(String[] args)
{
d = new DrawingWindow(800,800);
int i;
for(i=1; i < 4000; i = i + 20)
{
sky();
tree();
bush();
road();
sun(i);
car(i);
}
}
public static void sky()
{
Rect sky = new Rect(0,0,800,800);
d.setForeground(new Color(128,255,255));
d.fill(sky);
Rect bottom = new Rect(0,680,800,120);
d.setForeground(Color.white);
d.fill(bottom);
}
public static void tree()
{
Rect trunk = new Rect(640,520,40,136);
int XCentre = 660, YCentre = 450, Radius = 80;
Circle treeTop = new Circle(XCentre,YCentre,Radius);
d.setForeground(new Color(128,64,0));
d.fill(trunk);
d.setForeground(Color.green);
d.fill(treeTop);
}
public static void road()
{
Rect road = new Rect(0,656,800,24);
d.setForeground(Color.lightGray);
d.fill(road);
}
public static void bush()
{
Oval bush = new Oval(480,608,80,56);
d.setForeground(Color.green);
d.fill(bush);
}
public static void sun(int i)
{
int XCentre = 800 - i/5, YCentre = 0, Radius = 160;
Circle sun = new Circle(XCentre,YCentre,Radius);
d.setForeground(Color.yellow);
d.fill(sun);
int XCentre2 = 800 - i/5, YCentre2 = 0, Radius2 = 120;
Circle innerSun = new Circle(XCentre2,YCentre2,Radius2);
d.setForeground(Color.orange);
d.fill(innerSun);
int XCentre3 = 800 - i/5, YCentre3 = 0, Radius3 = 80;
Circle centreSun = new Circle(XCentre3,YCentre3,Radius3);
d.setForeground(Color.red);
d.fill(centreSun);
}
public static void car(int i)
{
int Start = 90, Angle = 180;
Rect arcRect = new Rect(i+48,528,192,112);
Arc boot = new Arc(arcRect,Start,Angle);
d.setForeground(new Color(97,25,215));
d.fill(boot);
int Start2 = 90, Angle2 = 90;
Rect arcRect2 = new Rect(i+56,536,192,112);
Arc bootWindow = new Arc(arcRect2,Start2,Angle2);
d.setForeground(new Color(193,255,255));
d.fill(bootWindow);
Rect backBumper = new Rect(i+48,584,96,48);
d.setForeground(new Color(97,25,215));
d.fill(backBumper);
int XCentre = i+240, YCentre = 580, Radius = 52;
Circle frontBody = new Circle(XCentre,YCentre,Radius);
d.setForeground(new Color(97,25,215));
d.fill(frontBody);
int XCentre1 = i+240, YCentre1 = 580, Radius1 = 45;
Circle windscreen = new Circle(XCentre1,YCentre1,Radius1);
d.setForeground(new Color(193,255,255));
d.fill(windscreen);
Rect body = new Rect(i+144,584,176,48);
d.setForeground(new Color(97,25,215));
d.fill(body);
int XCentre2 = i+120, YCentre2 = 632, Radius2 = 24;
Circle tyreLeft = new Circle(XCentre2,YCentre2,Radius2);
d.setForeground(Color.black);
d.fill(tyreLeft);
int XCentre3 = i+120, YCentre3 = 632, Radius3 = 12;
Circle hubcapLeft = new Circle(XCentre3,YCentre3,Radius3);
d.setForeground(Color.lightGray);
d.fill(hubcapLeft);
int XCentre4 = i+264, YCentre4 = 632, Radius4 = 24;
Circle tyreRight = new Circle(XCentre4,YCentre4,Radius4);
d.setForeground(Color.black);
d.fill(tyreRight);
int XCentre5 = i+264, YCentre5 = 632, Radius5 = 12;
Circle hubcapRight = new Circle(XCentre5,YCentre5,Radius5);
d.setForeground(Color.lightGray);
d.fill(hubcapRight);
int XCentre6 = i+320, YCentre6 = 608, Radius6 = 24;
Circle frontBumper = new Circle(XCentre6,YCentre6,Radius6);
d.setForeground(new Color(97,25,215));
d.fill(frontBumper);
Rect doors = new Rect(i+144,528,96,56);
d.setForeground(new Color(97,25,215));
d.fill(doors);
Rect rearWindow = new Rect(i+152,536,36,48);
d.setForeground(new Color(193,255,255));
d.fill(rearWindow);
Rect frontWindow = new Rect(i+196,536,36,48);
d.setForeground(new Color(193,255,255));
d.fill(frontWindow);
}
}
It makes a car drive across the screen and the sun go across the sky. What i need is to stop the flickering between frames. I know that i can use dWin.hold() and dWin.release() but im not sure exactly how to code it?
