calculate Quad Point for PointF - Android java.lang

Android examples for java.lang:Math Geometry

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Description

calculate Quad Point for PointF

Demo Code


//package com.java2s;

import android.graphics.PointF;

public class Main {
    public static final int QUAD_TYPE_LEFT_TOP = 1;
    public static final int QUAD_TYPE_LEFT_BOTTOM = 2;
    public static final int QUAD_TYPE_RIGHT_TOP = 3;
    public static final int QUAD_TYPE_RIGHT_TOP_LAST = 32;
    public static final int QUAD_TYPE_RIGHT_BOTTOM = 4;
    public static final int QUAD_OFFSET = 50;
    public static final int QUAD_OFFSET_RIGHT_TOP_LAST = 150;
    public static final int QUAD_OFFSET_RIGHT_BOTTOM = 150;

    public static PointF calculateQuadPoint(PointF start, PointF end,
            int quadType) {
        PointF quadPoint = new PointF();
        switch (quadType) {
        case QUAD_TYPE_LEFT_TOP:
            quadPoint.set((start.x + end.x) / 2 - QUAD_OFFSET,
                    (start.y + end.y) / 2 - QUAD_OFFSET);
            break;
        case QUAD_TYPE_LEFT_BOTTOM:
            quadPoint.set((start.x + end.x) / 2 - QUAD_OFFSET,
                    (start.y + end.y) / 2 + QUAD_OFFSET);
            break;
        case QUAD_TYPE_RIGHT_TOP:
            quadPoint.set((start.x + end.x) / 2 + QUAD_OFFSET,
                    (start.y + end.y) / 2 - QUAD_OFFSET);
            break;
        case QUAD_TYPE_RIGHT_TOP_LAST:
            quadPoint.set((start.x + end.x) / 2
                    + QUAD_OFFSET_RIGHT_TOP_LAST, (start.y + end.y) / 2
                    - QUAD_OFFSET_RIGHT_TOP_LAST);
            break;
        case QUAD_TYPE_RIGHT_BOTTOM:
            quadPoint.set((start.x + end.x) / 2 + QUAD_OFFSET_RIGHT_BOTTOM,
                    (start.y + end.y) / 2 + QUAD_OFFSET_RIGHT_BOTTOM);
            break;
        }/*from ww w.  ja  va2 s.  co  m*/
        return quadPoint;
    }
}

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