@@ -0,0 +1,226 @@ package processing.core;
import static org.junit.Assert.*; import org.junit.Test;
public class PMatrix3DTest {
@Test public void testConstructorsResetAndGet() { PMatrix3D m = new PMatrix3D(); float[] vals = m.get(null); assertEquals(1, vals[0], 1e-6); assertEquals(1, vals[5], 1e-6); assertEquals(1, vals[10], 1e-6); assertEquals(1, vals[15], 1e-6);
m.m00 = 2; m.reset(); vals = m.get(null); assertEquals(1, vals[0], 1e-6); }
@Test public void testSetAndGetMethods() { PMatrix3D m = new PMatrix3D(); float[] source = { 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13, 14,15,16,17 }; m.set(source); float[] target = m.get(null); for (int i = 0; i < 16; i++) { assertEquals(source[i], target[i], 1e-6); }
m.set(1, 2, 3, 4, 5, 6); target = m.get(null); assertEquals(1, target[0], 1e-6); assertEquals(2, target[1], 1e-6); assertEquals(0, target[2], 1e-6); assertEquals(3, target[3], 1e-6);
PMatrix2D m2d = new PMatrix2D(1, 2, 3, 4, 5, 6); m.set(m2d); target = m.get(null); assertEquals(1, target[0], 1e-6); assertEquals(2, target[1], 1e-6); assertEquals(0, target[2], 1e-6); assertEquals(3, target[3], 1e-6); }
@Test public void testTranslate() { PMatrix3D m = new PMatrix3D(); m.translate(0, 0, 0); float[] original = new PMatrix3D().get(null); float[] result = m.get(null); for (int i = 0; i < 16; i++) { assertEquals(original[i], result[i], 1e-6); }
m.reset(); m.translate(10, -5, 3); result = m.get(null); assertEquals(10, result[3], 1e-6); assertEquals(-5, result[7], 1e-6); assertEquals(3, result[11], 1e-6); assertEquals(1, result[15], 1e-6); }
@Test public void testRotateAndShear() { PMatrix3D m = new PMatrix3D(); m.reset(); m.rotate(0); float[] original = new PMatrix3D().get(null); float[] result = m.get(null); for (int i = 0; i < 16; i++) { assertEquals(original[i], result[i], 1e-6); }
m.reset(); m.rotateZ((float) Math.PI / 2); result = m.get(null); assertEquals(0, result[0], 1e-6); assertEquals(-1, result[1], 1e-6); assertEquals(1, result[4], 1e-6); assertEquals(0, result[5], 1e-6);
m.reset(); m.shearX((float) Math.PI / 4); result = m.get(null); float expectedT = (float) Math.tan(Math.PI / 4); assertEquals(expectedT, result[1], 1e-6);
m.reset(); m.shearY((float) Math.PI / 4); result = m.get(null); assertEquals(expectedT, result[4], 1e-6); }
@Test public void testScale() { PMatrix3D m = new PMatrix3D(); m.reset(); m.scale(1); float[] original = new PMatrix3D().get(null); float[] result = m.get(null); for (int i = 0; i < 16; i++) { assertEquals(original[i], result[i], 1e-6); }
m.reset(); m.scale(2, 3, 4); result = m.get(null); assertEquals(2, result[0], 1e-6); assertEquals(3, result[5], 1e-6); assertEquals(4, result[10], 1e-6);
m.reset(); m.scale(0, 1, 1); result = m.get(null); assertEquals(0, result[0], 1e-6); }
@Test public void testApplyAndPreApply() { PMatrix3D m = new PMatrix3D(); m.reset(); PMatrix3D n = new PMatrix3D( 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13, 14,15,16,17 ); m.apply(n); float[] result = m.get(null); float[] expected = n.get(null); for (int i = 0; i < 16; i++) { assertEquals(expected[i], result[i], 1e-6); }
m.reset(); m.preApply(n); result = m.get(null); for (int i = 0; i < 16; i++) { assertEquals(expected[i], result[i], 1e-6); } }
@Test public void testMultMethods() { PMatrix3D m = new PMatrix3D(); m.reset(); PVector p = new PVector(1, 2, 3); PVector resultP = m.mult(p, null); assertEquals(1, resultP.x, 1e-6); assertEquals(2, resultP.y, 1e-6); assertEquals(3, resultP.z, 1e-6);
float[] vec3 = {1, 2, 3}; float[] out3 = m.mult(vec3, new float[3]); assertEquals(1, out3[0], 1e-6); assertEquals(2, out3[1], 1e-6); assertEquals(3, out3[2], 1e-6);
float[] vec4 = {1, 2, 3, 4}; float[] out4 = m.mult(vec4, new float[4]); for (int i = 0; i < 4; i++) { assertEquals(vec4[i], out4[i], 1e-6); }
try { m.mult(vec3, vec3); fail("Expected RuntimeException for identical source and target arrays."); } catch (RuntimeException e) { // Exception expected. }
m.reset(); m.translate(10, 20, 30); float x = m.multX(1, 2, 3); float y = m.multY(1, 2, 3); float z = m.multZ(1, 2, 3); float w = m.multW(1, 2, 3); assertEquals(1 + 10, x, 1e-6); assertEquals(2 + 20, y, 1e-6); assertEquals(3 + 30, z, 1e-6); assertEquals(1, w, 1e-6); }
@Test public void testTransposeAndDeterminant() { PMatrix3D m = new PMatrix3D( 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13, 14,15,16,17 ); float det = m.determinant(); m.transpose(); float det2 = m.determinant(); assertEquals(det, det2, 1e-6); }
@Test public void testInvert() { PMatrix3D m = new PMatrix3D(); m.reset(); boolean inverted = m.invert(); assertTrue(inverted); float[] result = m.get(null); PMatrix3D identity = new PMatrix3D(); float[] idArr = identity.get(null); for (int i = 0; i < 16; i++) { assertEquals(idArr[i], result[i], 1e-6); }
m.reset(); m.scale(0, 1, 1); inverted = m.invert(); assertFalse(inverted); } }