102 lines
3.7 KiB
Java
102 lines
3.7 KiB
Java
import org.junit.jupiter.api.Test;
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import processing.core.PApplet;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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import static java.lang.Math.abs;
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import static org.junit.jupiter.api.Assertions.*;
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class LineTest{
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public void assertFloatEquals(float expected, float actual){
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assertFloatEquals(expected, actual, (float)0.0001);
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}
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public void assertFloatEquals(float expected, float actual, float range){
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assertTrue(abs(expected-actual) < range);
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}
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@Test
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public void P2PLine(){
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Vector v1 = new Vector(10, 0);
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Vector v2 = new Vector(10, 10);
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Line line = new Line(v1, v2);
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// make sure the line is pointing in the right direction
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Vector lineDirection = v2.sub(v1);
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assertFloatEquals(lineDirection.angleDiff(line.getDirection()), 0);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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// make sure the line ends in the correct place
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assertFloatEquals(v2.x, line.endPoint().x);
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assertFloatEquals(v2.y, line.endPoint().y);
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Random rand = new Random();
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// repeat this test with 100 random lines
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for(int i = 0; i < 100; i++){
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v1 = new Vector(rand.nextInt(1001), rand.nextInt(1001));
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v2 = new Vector(rand.nextInt(1001), rand.nextInt(1001));
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line = new Line(v1, v2);
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// make sure the line is pointing in the right direction
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lineDirection = v2.sub(v1);
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float angleDiff = lineDirection.angleDiff(line.getDirection());
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assertFloatEquals(0, angleDiff, 0.001f);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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// make sure the line ends in the correct place
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assertFloatEquals(v2.x, line.endPoint().x);
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assertFloatEquals(v2.y, line.endPoint().y);
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}
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}
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@Test
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public void bestFitLine(){
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Vector v1 = new Vector(10, 0);
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Vector v2 = new Vector(10, 10);
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ArrayList<Vector> points = new ArrayList<>();
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points.add(v1);
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points.add(v2);
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Line line = new Line(points);
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// make sure the line is pointing in the right direction
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Vector lineDirection = v2.sub(v1);
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assertFloatEquals(lineDirection.angleDiff(line.getDirection()), 0);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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}
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@Test
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public void testAngle(){
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Line ray = new Line(new Vector(680, 560), new Vector(680+116, 560+1));
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Line wall = new Line(new Vector(675, 587), new Vector(675-114, 587-29));
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float angle1 = wall.position.sub(ray.position).angle();
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float angle2 = wall.endPoint().sub(ray.position).angle();
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float rayAngle = ray.direction.angle();
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System.out.println("Angle 1: " + String.valueOf(angle1) + ", Angle 2: " + String.valueOf(angle2) + ", Ray Angle: " + String.valueOf(rayAngle));
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assertFloatEquals(1.753907144057f, angle1, 0.001f);
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assertFloatEquals(3.1583977941048f, angle2, 0.001f);
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assertFloatEquals(0.0086204761121f, rayAngle, 0.001f);
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}
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} |