Java Graphics Draw drawRTriangle(Graphics g, Color color, int x, int y, int r)

Description

draw R Triangle

License

Apache License

Declaration

public static void drawRTriangle(Graphics g, Color color, int x, int y, int r) 

Method Source Code

//package com.java2s;
/**//from   ww w .  j a  va2s  . com
 * 
 * Copyright 2008 - 2009
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * 
 * @project loon
 * @author cping
 * @email?javachenpeng@yahoo.com
 * @version 0.1
 */

import java.awt.Color;

import java.awt.Graphics;

public class Main {

    public static void drawRTriangle(Graphics g, Color color, int x, int y, int r) {
        int x1 = x;
        int y1 = y + r;
        int x2 = x - (int) (r * Math.cos(Math.PI / 6.0));
        int y2 = y - (int) (r * Math.sin(Math.PI / 6.0));
        int x3 = x + (int) (r * Math.cos(Math.PI / 6.0));
        int y3 = y - (int) (r * Math.sin(Math.PI / 6.0));
        int[] xpos = new int[3];
        xpos[0] = x1;
        xpos[1] = x2;
        xpos[2] = x3;
        int[] ypos = new int[3];
        ypos[0] = y1;
        ypos[1] = y2;
        ypos[2] = y3;
        g.setColor(color);
        g.fillPolygon(xpos, ypos, 3);
    }
}

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8. drawSelectionBox(Graphics g)
9. drawSelectionPoint(Graphics g, Point p)