Hi everyone
.....I am trying to make a simple method to scale a drawing bigger or smaller.
Here is the code to the drawing which works btw..without scaling method:
[Source]
package Chapter17Graphics;
import java.awt.*;
/**
* Created by IntelliJ IDEA.
* User: Rob H
* Date: Aug 29, 2005
* Time: 3:16:00 AM
* Workshop for chapter 17
*/
public class Drawing extends java.applet.Applet {
Polygon hair;
public void init() {
int[] hairX = {
125, 131, 156, 217, 270, 314, 244, 233, 196, 162, 147, 153, 180, 189,
125
};
int[] hairY = {
314, 122, 75, 57, 96, 287, 319, 118, 87, 92, 133, 203, 231, 258, 314
};
hair = new Polygon(hairX, hairY, 15);
setBackground(Color.LIGHT_GRAY);
}
public void paint(Graphics g) {
g.setColor(Color.white);
g.fillRoundRect(147, 84, 103, 74, 23, 23);
g.fillOval(147, 94, 103, 132);
g.setColor(Color.black);
g.fillPolygon(hair);
int[] eyebrow1X = { 151, 168, 174, 171, 178, 193 };
int[] eyebrow1Y = { 145, 140, 148, 184, 191, 188 };
g.drawPolyline(eyebrow1X, eyebrow1Y, 6);
int[] eyebrow2X = { 188, 197, 213, 223 };
int[] eyebrow2Y = { 146, 141, 142, 146 };
g.drawPolyline(eyebrow2X, eyebrow2Y, 4);
int[] mouthX = { 166, 185, 200 };
int[] mouthY = { 199, 200, 197 };
g.drawPolyline(mouthX, mouthY, 3);
g.fillOval(161, 148, 10, 3);
g.fillOval(202, 145, 12, 5);
}
}
[/Source]
Now what I need to do is make a "Scaling" method that can multiply every integer in an array by some kind of common factor. So I can change the points in a polygon to make it bigger or smaller before it is created.
Here is what I tried:
[Source]
public void scaling(int a, int[] polyArray){
//you would use HairX as an example in the parameter
//and say 2 for int a parameter to scale the part hair up by 2
polyArray2= a*polyArray;
int[]polyArray2;
polyArray2 = new Polygon;
}
[/Source]
This cleary doesn't work and just shows how really newbieish I really am when it comes to trying to work with Arrays. I always get a error about how int's and int[] can't uses operators(+-*/etc.)with each other and I've tried to cast 1 to the other with parenthatiese but that doesn't work either(works for freakn doubls to ints etc.. so I gave it a try...
....If anyone can help me rebuild this method and tell me how to properly implement it, I would appreciate it. I know I will need this again. (btw I couldn't find this in the tutorials) thanks for the help...Rob
