Example usage for java.awt.geom Rectangle2D intersectsLine

Introduction

In this page you can find the example usage for java.awt.geom Rectangle2D intersectsLine.

Prototype

public boolean intersectsLine(double x1, double y1, double x2, double y2) 

Source Link

Document

Tests if the specified line segment intersects the interior of this Rectangle2D .

Usage

From source file:TransferableScribblePane.java

public boolean intersects(Rectangle2D r) {
    if (numsegs < 1)
        return false;
    float lastx = x0, lasty = y0;
    for (int i = 0; i < numsegs; i++) { // loop through the segments
        float x = coords[i * 2] + x0;
        float y = coords[i * 2 + 1] + y0;
        // See if this line segment intersects the rectangle
        if (r.intersectsLine(x, y, lastx, lasty))
            return true;
        // Otherwise move on to the next segment
        lastx = x;//from  w w  w  .j av  a 2s  .c  om
        lasty = y;
    }
    return false; // No line segment intersected the rectangle
}

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From source file:ScribbleDragAndDrop.java

/**
 * Determine if the scribble intersects the specified rectangle by testing
 * each line segment individually/* ww  w  . j a  v  a2 s.co  m*/
 */
public boolean intersects(Rectangle2D r) {
    if (numPoints < 4)
        return false;
    int i = 0;
    double x1, y1, x2 = 0.0, y2 = 0.0;
    while (i < numPoints) {
        if (Double.isNaN(points[i])) { // If we're beginning a new line
            i++; // Skip the NaN
            x2 = points[i++];
            y2 = points[i++];
        } else {
            x1 = x2;
            y1 = y2;
            x2 = points[i++];
            y2 = points[i++];
            if (r.intersectsLine(x1, y1, x2, y2))
                return true;
        }
    }

    return false;
}

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