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Mat4Test.java
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Mat4Test.java
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package com.hackoeur.jglm;
import java.nio.FloatBuffer;
import java.util.Iterator;
import org.junit.Assert;
import org.junit.Test;
/**
* @author James Royalty
*/
public class Mat4Test {
@Test
public void testNewWithDiagonalValue() {
Mat4 m1 = new Mat4(1f);
Mat4 m2 = Mat4.MAT4_IDENTITY;
Assert.assertEquals(m2, m1);
Mat4 m3 = new Mat4(4f);
JglmTesting.assertFloatsEqualDefaultTol(4f, m3.m00);
JglmTesting.assertFloatsEqualDefaultTol(4f, m3.m11);
JglmTesting.assertFloatsEqualDefaultTol(4f, m3.m22);
JglmTesting.assertFloatsEqualDefaultTol(4f, m3.m33);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m01);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m02);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m03);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m10);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m12);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m13);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m20);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m21);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m23);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m30);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m31);
JglmTesting.assertFloatsEqualDefaultTol(0f, m3.m32);
}
@Test
public void testNewWithVec4() {
Vec4 v1 = new Vec4(1f, 2f, 3f, 4f);
Vec4 v2 = new Vec4(5f, 6f, 7f, 8f);
Vec4 v3 = new Vec4(9f, 10f, 11f, 12f);
Vec4 v4 = new Vec4(13f, 14f, 15f, 16f);
Mat4 m1 = new Mat4(v1, v2, v3, v4);
Mat4 m2 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Assert.assertEquals(m2, m1);
}
@Test
public void testNewWithArray() {
Mat4 m1 = new Mat4(new float[] { 1f, 2f, 3f, 4f, 5f, 6f, 7f, 8f, 9f, 10f, 11f, 12f, 13f, 14f, 15f, 16f } );
Mat4 m2 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Assert.assertEquals(m2, m1);
}
@Test
public void testNewWithBuffer() {
FloatBuffer buffer = FloatBuffer.allocate(16);
buffer.put(1f).put(2f).put(3f).put(4f).put(5f).put(6f).put(7f).put(8f)
.put(9f).put(10f).put(11f).put(12f).put(13f).put(14f).put(15f).put(16f);
buffer.flip();
Mat4 m1 = new Mat4(buffer);
Mat4 m2 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Assert.assertEquals(m2, m1);
}
@Test
public void testNewCopy() {
Mat4 m1 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Mat4 m2 = new Mat4(m1);
Assert.assertEquals(m1, m2);
}
@Test
public void testGetColumn() {
Mat4 m1 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Assert.assertEquals(new Vec4(1f, 2f, 3f, 4f), m1.getColumn(0));
Assert.assertEquals(new Vec4(5f, 6f, 7f, 8f), m1.getColumn(1));
Assert.assertEquals(new Vec4(9f, 10f, 11f, 12f), m1.getColumn(2));
Assert.assertEquals(new Vec4(13f, 14f, 15f, 16f), m1.getColumn(3));
}
@Test
public void testGetColumns() {
Mat4 m1 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Iterable<Vec4> cols = m1.getColumns();
Iterator<Vec4> iter = cols.iterator();
Assert.assertEquals(new Vec4(1f, 2f, 3f, 4f), iter.next());
Assert.assertEquals(new Vec4(5f, 6f, 7f, 8f), iter.next());
Assert.assertEquals(new Vec4(9f, 10f, 11f, 12f), iter.next());
Assert.assertEquals(new Vec4(13f, 14f, 15f, 16f), iter.next());
Assert.assertFalse(iter.hasNext());
}
@Test
public void testPureTranslate() {
Vec3 vec = new Vec3(10.0f, 20.0f, 30.0f);
Mat4 matTrans = Mat4.MAT4_IDENTITY.translate(vec);
Mat4 expectedTrans = new Mat4(
new Vec4(1f, 0f, 0f, 0f),
new Vec4(0f, 1f, 0f, 0f),
new Vec4(0f, 0f, 1f, 0f),
new Vec4(vec, 1f)
);
Assert.assertEquals(expectedTrans, matTrans);
}
@Test
public void testMultiplication() {
Mat4 m1 = new Mat4(
49.f, 23.f, 5.f, 86.f,
50.f, 90.f, 47.f, 88.f,
29.f, 45.f, 46.f, 20.f,
12.f, 32.f, 89.f, 58.f
);
Mat4 m2 = new Mat4(
54.f, 19.f, 25.f, 82.f,
43.f, 25.f, 51.f, 91.f,
28.f, 36.f, 24.f, 56.f,
64.f, 68.f, 96.f, 41.f
);
Mat4 expectedMul = new Mat4(
5305.f, 6701.f, 9611.f, 11572.f,
5928.f, 8446.f, 11835.f, 12196.f,
4540.f, 6756.f, 7920.f, 9304.f,
9812.f, 13224.f, 11581.f, 15786.f
);
Mat4 multiplied = m1.multiply(m2);
Assert.assertEquals(expectedMul, multiplied);
}
@Test
public void testMultiplicationWithVector(){
Mat4 m1 = new Mat4(
49.f, 50.f,29.f, 12.f,
23.f, 90.f, 45.f, 32.f,
5.f, 47.f, 46.f, 89.f,
86.f, 88.f, 20.f, 58.f
);
Vec4 v1 = new Vec4(
54.f,
43.f,
28.f,
64.f
);
Vec4 expectedMul = new Vec4(
9279.f,
13518.f,
6069.f,
8228.f
);
Vec4 multiplied = m1.multiply(v1);
Assert.assertEquals(expectedMul, multiplied);
}
@Test
public void testAddition() {
Mat4 a1 = new Mat4(
49.f, 23.f, 5.f, 86.f,
50.f, 90.f, 47.f, 88.f,
29.f, 45.f, 46.f, 20.f,
12.f, 32.f, 89.f, 58.f
);
Mat4 a2 = new Mat4(
54.f, 19.f, 25.f, 82.f,
43.f, 25.f, 51.f, 91.f,
28.f, 36.f, 24.f, 56.f,
0.f, 68.f, 96.f, 41.f
);
Mat4 expectedAdded = new Mat4(
103.f, 42.f, 30.f, 168.f,
93.f, 115.f, 98.f, 179.f,
57, 81.f, 70.f, 76.f,
12.f, 100.f, 185.f, 99.f
);
Assert.assertEquals(expectedAdded, a1.add(a2));
}
@Test
public void testSubtraction() {
Mat4 m1 = new Mat4(
49.f, 23.f, 5.f, 86.f,
50.f, 90.f, 47.f, 88.f,
29.f, 45.f, 46.f, 20.f,
12.f, 32.f, 89.f, 58.f
);
Mat4 m2 = new Mat4(
54.f, 19.f, 25.f, 82.f,
43.f, 25.f, 51.f, 91.f,
28.f, 36.f, 24.f, 56.f,
64.f, 68.f, 96.f, 41.f
);
Mat4 expectedSub = new Mat4(
-5.f, 4.f, -20.f, 4.f,
7.f, 65.f, -4.f, -3.f,
1.f, 9.f, 22.f, -36.f,
-52.f, -36.f, -7.f, 17.f
);
Mat4 subtracted = m1.subtract(m2);
Assert.assertEquals(expectedSub, subtracted);
}
@Test
public void testTranslate() {
Mat4 m1 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Vec3 translation = new Vec3(10.0f, 1.0f, 2.0f);
Mat4 matTrans = m1.translate(translation);
Mat4 expectedTrans = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
46f, 60f, 74f, 88f);
Assert.assertEquals(expectedTrans, matTrans);
}
@Test
public void testTranspose() {
Mat4 m1 = new Mat4(
1f, 2f, 3f, 4f,
5f, 6f, 7f, 8f,
9f, 10f, 11f, 12f,
13f, 14f, 15f, 16f
);
Mat4 m1T = m1.transpose();
Assert.assertFalse(m1.equals(m1T));
Mat4 m1T_T = m1T.transpose();
Assert.assertEquals(m1, m1T_T);
}
}