package com.ckrocket.gui;

import javax.microedition.lcdui.Canvas;
import java.util.Random;

public abstract class TouchCanvas extends Canvas {

boolean mousePressed;
int dragMouseX, dragMouseY, presMouseX, presMouseY, relMouseX, relMouseY;
long FPS, FPS_Count, FPS_Start;

 public void pointerPressed(int x, int y){
  mousePressed = true;
  presMouseX = x;
  presMouseY = y;
 }
 public void pointerDragged(int x, int y){
  dragMouseX = x;
  dragMouseY = y;
 }
 public void pointerReleased(int x, int y){
  mousePressed = false;
  relMouseX = x;
  relMouseY = y;
 }
 public int dist(int x1, int y1, int x2, int y2){
  int dist =(int)(Math.sqrt( (x1 - x2) * (x1 - x2) + (y1  - y2) * (y1 - y2)));
  return dist;
 }
 public String getFPS() {
  FPS_Count ++;
   if (FPS_Start == 0) FPS_Start =  System.currentTimeMillis();
    if (System.currentTimeMillis() -   FPS_Start >= 1000) {
     FPS = FPS_Count;
     FPS_Count = 0;
     FPS_Start = System.currentTimeMillis();
    }
   return Long.toString(FPS);
  }
  public boolean pointCross(int x1,int x2,int x3,int x4,int y1,int y2,int y3,int y4){
    int x = crossPointX(x1,x2,x3, x4, y1, y2, y3, y4);
    int y = crossPointY(x1,x2,x3, x4, y1, y2, y3, y4);
    boolean point =
     x1<=x && x2>=x && x3<=x && x4>=x && 
     y1<=y && y2>=y && y3<=y && y4>=y;
    return point;
  }
  public int crossPointX( int x1,int x2,int x3,int x4,int y1, int y2,int y3,int y4){
    int x =(int) (0 - ((x1*y2-x2*y1)*(x4-x3)-(x3*y4-x4*y3)*(x2-x1))/((y1-y2)*(x4-x3)-(y3-y4)*(x2-x1)));
    return x;
  }
  public int crossPointY(int x1, int x2, int x3, int x4, int y1, int y2, int y3, int y4){
    int x = crossPointX( x1, x2, x3, x4,y1, y2,y3, y4);
    int y =(int)(((y3-y4) * x-(x3*y4-x4*y3))/(x4-x3));
    return y;
  }
 public int random (int a, int b){
  Random r = new Random();
  return a + ((r.nextInt() >>> 1)%(b - a));
 }
 public void sleep(long sleep){
  try{
   Thread.sleep(sleep);
  }catch(Exception e){
   e.printStackTrace();
  }
 }
 public void repaint(){
  super.repaint();
  sleep(40L);
 }
}