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GeometryUtils improvements (#709)

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This commit is contained in:
Gustl22
2019-04-05 11:47:27 +02:00
committed by Emux
parent 036d63c9dd
commit ba65786b5a
2 changed files with 59 additions and 24 deletions
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55
vtm-tests/test/org/oscim/utils/GeometryTest.java
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@@ -7,17 +7,36 @@ import org.oscim.utils.geom.GeometryUtils;
public class GeometryTest {
@Test
public void testIsTrisClockwise() {
// Coordinate system is LHS
float[] pA = new float[]{0, 0};
float[] pB = new float[]{1, 0};
float[] pC = new float[]{1, 1};
public void testClosestPointOnLine2D() {
float[] pP = {4, 1};
float[] pL = {1, 2};
float[] vL = {1, -1};
float area = GeometryUtils.isTrisClockwise(pA, pB, pC);
Assert.assertTrue(area > 0);
float[] point = GeometryUtils.closestPointOnLine2D(pP, pL, vL);
Assert.assertEquals(point[0], 3, 0.00001);
Assert.assertEquals(point[1], 0, 0.00001);
}
area = GeometryUtils.isTrisClockwise(pA, pC, pB);
Assert.assertTrue(area < 0);
@Test
public void testDistancePointLine2D() {
float[] pP = {1, 0};
float[] pL = {0, 0};
float[] vL = {2, 2};
float distance = GeometryUtils.distancePointLine2D(pP, pL, vL);
Assert.assertEquals(distance, Math.sqrt(2) / 2, 0.00001);
}
@Test
public void testDotProduct() {
float[] p = {-1, 0, 0, 0, 0, 0};
for (int i = 0; i < 9; i++) {
p[4] = (float) Math.cos(Math.toRadians(i * 45));
p[5] = (float) Math.sin(Math.toRadians(i * 45));
System.out.println("\n> " + (i * 45) + " " + p[3] + ":" + p[4] + "\n="
+ GeometryUtils.dotProduct(p, 0, 2, 4));
}
}
@Test
@@ -34,14 +53,16 @@ public class GeometryTest {
}
@Test
public void testDotProduct() {
float[] p = {-1, 0, 0, 0, 0, 0};
public void testIsTrisClockwise() {
// Coordinate system is LHS
float[] pA = new float[]{0, 0};
float[] pB = new float[]{1, 0};
float[] pC = new float[]{1, 1};
for (int i = 0; i < 9; i++) {
p[4] = (float) Math.cos(Math.toRadians(i * 45));
p[5] = (float) Math.sin(Math.toRadians(i * 45));
System.out.println("\n> " + (i * 45) + " " + p[3] + ":" + p[4] + "\n="
+ GeometryUtils.dotProduct(p, 0, 2, 4));
}
float area = GeometryUtils.isTrisClockwise(pA, pB, pC);
Assert.assertTrue(area > 0);
area = GeometryUtils.isTrisClockwise(pA, pC, pB);
Assert.assertTrue(area < 0);
}
}