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35 lines
876 B
Java
35 lines
876 B
Java
package gab.opencv;
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import processing.core.*;
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public class Line {
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public PVector start, end;
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public double angle;
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public double x1, y1, x2, y2;
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public Line(double x1, double y1, double x2, double y2){
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this.x1 = x1;
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this.y1 = y1;
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this.x2 = x2;
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this.y2 = y2;
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start = new PVector((float)x1, (float)y1);
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end = new PVector((float)x2, (float)y2);
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// measure the angle between this line
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// and a vertical line oriented up
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angle = angleBetween(x1, y1, x2, y2, 0, 0, 0, -1);
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}
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public double angleFrom(Line other){
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return angleBetween(x1, y1, x2, y2, other.x1, other.y1, other.x2, other.y2);
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}
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public static double angleBetween(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4){
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double angle1 = Math.atan2(y1 - y2, x1 - x2);
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double angle2 = Math.atan2(y3 - y4, x3 - x4);
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return angle1-angle2;
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}
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}
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