[refactor] separated FinSet Tests into files corresponding to FinSet, TrapezoidalFinSet, and FreeformFinSet
This commit is contained in:
Daniel_M_Williams
parent
104b0ce74f
commit
f3dbceba37
@ -35,361 +35,4 @@ public class FinSetTest extends BaseTestCase {
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assertEquals(1, efins.getFinCount());
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}
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@Test
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public void testTrapezoidCGComputation() {
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{
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// This is a simple square fin with sides of 1.0.
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(1);
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fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
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Coordinate coords = fins.getCG();
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assertEquals(1.0, fins.getFinArea(), 0.001);
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assertEquals(0.5, coords.x, 0.001);
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assertEquals(0.5, coords.y, 0.001);
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}
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{
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// This is a trapezoid. Height 1, root 1, tip 1/2 no sweep.
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// It can be decomposed into a rectangle followed by a triangle
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// +---+
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// | \
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// | \
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// +------+
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(1);
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fins.setFinShape(1.0, 0.5, 0.0, 1.0, .005);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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}
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@Test
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public void testInstancePoints_PI_2_BaseRotation() {
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// This is a simple square fin with sides of 1.0.
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(4);
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fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
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fins.setBaseRotation( Math.PI/2 );
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BodyTube body = new BodyTube(1.0, 0.05 );
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body.addChild( fins );
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Coordinate[] points = fins.getInstanceOffsets();
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assertEquals( 0, points[0].x, 0.00001);
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assertEquals( 0, points[0].y, 0.00001);
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assertEquals( 0.05, points[0].z, 0.00001);
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assertEquals( 0, points[1].x, 0.00001);
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assertEquals( -0.05, points[1].y, 0.00001);
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assertEquals( 0, points[1].z, 0.00001);
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}
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@Test
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public void testInstancePoints_PI_4_BaseRotation() {
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// This is a simple square fin with sides of 1.0.
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(4);
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fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
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fins.setBaseRotation( Math.PI/4 );
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BodyTube body = new BodyTube(1.0, 0.05 );
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body.addChild( fins );
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Coordinate[] points = fins.getInstanceOffsets();
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assertEquals( 0, points[0].x, 0.0001);
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assertEquals( 0.03535, points[0].y, 0.0001);
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assertEquals( 0.03535, points[0].z, 0.0001);
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assertEquals( 0, points[1].x, 0.0001);
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assertEquals( -0.03535, points[1].y, 0.0001);
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assertEquals( 0.03535, points[1].z, 0.0001);
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}
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@Test
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public void testInstanceAngles_zeroBaseRotation() {
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// This is a simple square fin with sides of 1.0.
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(4);
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fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
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fins.setBaseRotation( 0.0 );
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double[] angles = fins.getInstanceAngles();
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assertEquals( angles[0], 0, 0.000001 );
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assertEquals( angles[1], Math.PI/2, 0.000001 );
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assertEquals( angles[2], Math.PI, 0.000001 );
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assertEquals( angles[3], 1.5*Math.PI, 0.000001 );
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}
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@Test
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public void testInstanceAngles_90_BaseRotation() {
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// This is a simple square fin with sides of 1.0.
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TrapezoidFinSet fins = new TrapezoidFinSet();
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fins.setFinCount(4);
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fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
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fins.setBaseRotation( Math.PI/2 );
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double[] angles = fins.getInstanceAngles();
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assertEquals( angles[0], Math.PI/2, 0.000001 );
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assertEquals( angles[1], Math.PI, 0.000001 );
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assertEquals( angles[2], 1.5*Math.PI, 0.000001 );
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assertEquals( angles[3], 0, 0.000001 );
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}
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@Test
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public void testFreeformCGComputation() throws Exception {
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{
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// This is a trapezoid. Height 1, root 1, tip 1/2 no sweep.
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// It can be decomposed into a rectangle followed by a triangle
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// +---+
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// | \
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// | \
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// +------+
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, 1),
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new Coordinate(.5, 1),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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{
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// This is the same trapezoid as previous free form, but it has
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// some extra points along the lines.
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, .5),
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new Coordinate(0, 1),
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new Coordinate(.25, 1),
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new Coordinate(.5, 1),
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new Coordinate(.75, .5),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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{
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// This is the same trapezoid as previous free form, but it has
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// some extra points which are very close to previous points.
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// in particular for points 0 & 1,
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// y0 + y1 is very small.
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, 1E-15),
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new Coordinate(0, 1),
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new Coordinate(1E-15, 1),
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new Coordinate(.5, 1),
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new Coordinate(.5, 1 - 1E-15),
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new Coordinate(1, 1E-15),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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}
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@Test
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public void testWildmanVindicatorShape() throws Exception {
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// This fin shape is similar to the aft fins on the Wildman Vindicator.
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// A user noticed that if the y values are similar but not equal,
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// the compuation of CP was incorrect because of numerical instability.
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//
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// +-----------------+
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// \ \
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// \ \
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// + \
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// / \
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// +---------------------+
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//
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0.02143125, 0.01143),
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new Coordinate(0.009524999999999999, 0.032543749999999996),
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new Coordinate(0.041275, 0.032537399999999994),
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new Coordinate(0.066675, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.00130, fins.getFinArea(), 0.00001);
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assertEquals(0.03423, coords.x, 0.00001);
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assertEquals(0.01427, coords.y, 0.00001);
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BodyTube bt = new BodyTube();
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bt.addChild(fins);
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FinSetCalc calc = new FinSetCalc(fins);
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FlightConditions conditions = new FlightConditions(null);
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AerodynamicForces forces = new AerodynamicForces();
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WarningSet warnings = new WarningSet();
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calc.calculateNonaxialForces(conditions, forces, warnings);
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//System.out.println(forces);
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assertEquals(0.023409, forces.getCP().x, 0.0001);
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}
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@Test
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public void testFreeFormCGWithNegativeY() throws Exception {
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// This particular fin shape is currently not allowed in OR since the y values are negative
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// however, it is possible to convert RockSim files and end up with fins which
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// have negative y values.
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// A user submitted an ork file which could not be simulated because the fin
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// was constructed on a tail cone. It so happened that for one pair of points
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// y_n = - y_(n+1) which caused a divide by zero and resulted in CGx = NaN.
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// This Fin set is constructed to have the same problem. It is a square and rectagle
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// where the two trailing edge corners of the rectangle satisfy y_0 = -y_1
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//
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// +---------+
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// | |
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// | |
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// +----+ |
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// | |
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// | |
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// +----+
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, 1),
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new Coordinate(2, 1),
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new Coordinate(2, -1),
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new Coordinate(1, -1),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(3.0, fins.getFinArea(), 0.001);
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assertEquals(3.5 / 3.0, coords.x, 0.001);
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assertEquals(0.5 / 3.0, coords.y, 0.001);
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}
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@Test
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public void testFreeformConvert() {
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testFreeformConvert(new TrapezoidFinSet());
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testFreeformConvert(new EllipticalFinSet());
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testFreeformConvert(new FreeformFinSet());
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}
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private void testFreeformConvert(FinSet fin) {
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FreeformFinSet converted;
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Material mat = Material.newMaterial(Type.BULK, "foo", 0.1, true);
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fin.setBaseRotation(1.1);
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fin.setCantAngle(0.001);
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fin.setCGOverridden(true);
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fin.setColor(Color.BLACK);
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fin.setComment("cmt");
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fin.setCrossSection(CrossSection.ROUNDED);
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fin.setFinCount(5);
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fin.setFinish(Finish.ROUGH);
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fin.setLineStyle(LineStyle.DASHDOT);
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fin.setMassOverridden(true);
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fin.setMaterial(mat);
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fin.setOverrideCGX(0.012);
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fin.setOverrideMass(0.0123);
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fin.setOverrideSubcomponents(true);
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fin.setAxialOffset(0.1);
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fin.setAxialMethod(AxialMethod.ABSOLUTE);
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fin.setTabHeight(0.01);
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fin.setTabLength(0.02);
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fin.setTabRelativePosition(TabRelativePosition.END);
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fin.setTabShift(0.015);
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fin.setThickness(0.005);
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converted = FreeformFinSet.convertFinSet((FinSet) fin.copy());
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/// what do we want to ACTUALLY compare?
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// ComponentCompare.assertSimilarity(fin, converted, true); // deprecated; removed
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assertEquals(converted.getComponentName(), converted.getName());
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// Create test rocket
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Rocket rocket = new Rocket();
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AxialStage stage = new AxialStage();
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BodyTube body = new BodyTube();
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rocket.addChild(stage);
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stage.addChild(body);
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body.addChild(fin);
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rocket.enableEvents();
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Listener l1 = new Listener("l1");
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rocket.addComponentChangeListener(l1);
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fin.setName("Custom name");
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assertEquals("FinSet listener has not been notified: ", l1.changed, true);
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assertEquals(ComponentChangeEvent.NONFUNCTIONAL_CHANGE, l1.changetype);
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// Create copy
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RocketComponent rocketcopy = rocket.copy();
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Listener l2 = new Listener("l2");
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rocketcopy.addComponentChangeListener(l2);
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FinSet fincopy = (FinSet) rocketcopy.getChild(0).getChild(0).getChild(0);
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FreeformFinSet.convertFinSet(fincopy);
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assertTrue("FinSet listener is changed", l2.changed);
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assertEquals(ComponentChangeEvent.TREE_CHANGE,
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l2.changetype & ComponentChangeEvent.TREE_CHANGE);
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}
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private static class Listener implements ComponentChangeListener {
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private boolean changed = false;
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private int changetype = 0;
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private final String name;
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public Listener(String name) {
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this.name = name;
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}
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@Override
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public void componentChanged(ComponentChangeEvent e) {
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assertFalse("Ensuring listener " + name + " has not been called.", changed);
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changed = true;
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changetype = e.getType();
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}
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}
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}
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@ -0,0 +1,272 @@
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package net.sf.openrocket.rocketcomponent;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import java.awt.geom.Point2D;
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import org.junit.Test;
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import net.sf.openrocket.aerodynamics.AerodynamicForces;
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import net.sf.openrocket.aerodynamics.FlightConditions;
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import net.sf.openrocket.aerodynamics.WarningSet;
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import net.sf.openrocket.aerodynamics.barrowman.FinSetCalc;
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import net.sf.openrocket.material.Material;
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import net.sf.openrocket.material.Material.Type;
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import net.sf.openrocket.rocketcomponent.ExternalComponent.Finish;
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import net.sf.openrocket.rocketcomponent.FinSet.CrossSection;
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import net.sf.openrocket.rocketcomponent.FinSet.TabRelativePosition;
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import net.sf.openrocket.rocketcomponent.position.*;
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import net.sf.openrocket.util.Color;
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import net.sf.openrocket.util.Coordinate;
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import net.sf.openrocket.util.LineStyle;
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import net.sf.openrocket.util.BaseTestCase.BaseTestCase;
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public class FreeformFinSetTest extends BaseTestCase {
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@Test
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public void testFreeformCGComputationSimpleTrapezoid() throws Exception {
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// This is a trapezoid. Height 1, root 1, tip 1/2 no sweep.
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// It can be decomposed into a rectangle followed by a triangle
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// +---+
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// | \
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// | \
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// +------+
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, 1),
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new Coordinate(.5, 1),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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@Test
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public void testFreeformCGComputationTrapezoidExtraPoints() throws Exception {
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// This is the same trapezoid as previous free form, but it has
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// some extra points along the lines.
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, .5),
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new Coordinate(0, 1),
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new Coordinate(.25, 1),
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new Coordinate(.5, 1),
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new Coordinate(.75, .5),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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@Test
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public void testFreeformCGComputationAdjacentPoinst() throws Exception {
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// This is the same trapezoid as previous free form, but it has
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// some extra points which are very close to previous points.
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// in particular for points 0 & 1,
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// y0 + y1 is very small.
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FreeformFinSet fins = new FreeformFinSet();
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fins.setFinCount(1);
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Coordinate[] points = new Coordinate[] {
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new Coordinate(0, 0),
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new Coordinate(0, 1E-15),
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new Coordinate(0, 1),
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new Coordinate(1E-15, 1),
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new Coordinate(.5, 1),
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new Coordinate(.5, 1 - 1E-15),
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new Coordinate(1, 1E-15),
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new Coordinate(1, 0)
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};
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fins.setPoints(points);
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Coordinate coords = fins.getCG();
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assertEquals(0.75, fins.getFinArea(), 0.001);
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assertEquals(0.3889, coords.x, 0.001);
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assertEquals(0.4444, coords.y, 0.001);
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}
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@Test
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public void testWildmanVindicatorShape() throws Exception {
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// This fin shape is similar to the aft fins on the Wildman Vindicator.
|
||||
// A user noticed that if the y values are similar but not equal,
|
||||
// the compuation of CP was incorrect because of numerical instability.
|
||||
//
|
||||
// +-----------------+
|
||||
// \ \
|
||||
// \ \
|
||||
// + \
|
||||
// / \
|
||||
// +---------------------+
|
||||
//
|
||||
FreeformFinSet fins = new FreeformFinSet();
|
||||
fins.setFinCount(1);
|
||||
Coordinate[] points = new Coordinate[] {
|
||||
new Coordinate(0, 0),
|
||||
new Coordinate(0.02143125, 0.01143),
|
||||
new Coordinate(0.009524999999999999, 0.032543749999999996),
|
||||
new Coordinate(0.041275, 0.032537399999999994),
|
||||
new Coordinate(0.066675, 0)
|
||||
};
|
||||
fins.setPoints(points);
|
||||
Coordinate coords = fins.getCG();
|
||||
assertEquals(0.00130, fins.getFinArea(), 0.00001);
|
||||
assertEquals(0.03423, coords.x, 0.00001);
|
||||
assertEquals(0.01427, coords.y, 0.00001);
|
||||
|
||||
BodyTube bt = new BodyTube();
|
||||
bt.addChild(fins);
|
||||
FinSetCalc calc = new FinSetCalc(fins);
|
||||
FlightConditions conditions = new FlightConditions(null);
|
||||
AerodynamicForces forces = new AerodynamicForces();
|
||||
WarningSet warnings = new WarningSet();
|
||||
calc.calculateNonaxialForces(conditions, forces, warnings);
|
||||
//System.out.println(forces);
|
||||
assertEquals(0.023409, forces.getCP().x, 0.0001);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testFreeFormCGWithNegativeY() throws Exception {
|
||||
// This particular fin shape is currently not allowed in OR since the y values are negative
|
||||
// however, it is possible to convert RockSim files and end up with fins which
|
||||
// have negative y values.
|
||||
|
||||
// A user submitted an ork file which could not be simulated because the fin
|
||||
// was constructed on a tail cone. It so happened that for one pair of points
|
||||
// y_n = - y_(n+1) which caused a divide by zero and resulted in CGx = NaN.
|
||||
|
||||
// This Fin set is constructed to have the same problem. It is a square and rectagle
|
||||
// where the two trailing edge corners of the rectangle satisfy y_0 = -y_1
|
||||
//
|
||||
// +---------+
|
||||
// | |
|
||||
// | |
|
||||
// +----+ |
|
||||
// | |
|
||||
// | |
|
||||
// +----+
|
||||
|
||||
FreeformFinSet fins = new FreeformFinSet();
|
||||
fins.setFinCount(1);
|
||||
Coordinate[] points = new Coordinate[] {
|
||||
new Coordinate(0, 0),
|
||||
new Coordinate(0, 1),
|
||||
new Coordinate(2, 1),
|
||||
new Coordinate(2, -1),
|
||||
new Coordinate(1, -1),
|
||||
new Coordinate(1, 0)
|
||||
};
|
||||
fins.setPoints(points);
|
||||
Coordinate coords = fins.getCG();
|
||||
assertEquals(3.0, fins.getFinArea(), 0.001);
|
||||
assertEquals(3.5 / 3.0, coords.x, 0.001);
|
||||
assertEquals(0.5 / 3.0, coords.y, 0.001);
|
||||
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
public void testFreeformConvert() {
|
||||
testFreeformConvert(new TrapezoidFinSet());
|
||||
testFreeformConvert(new EllipticalFinSet());
|
||||
testFreeformConvert(new FreeformFinSet());
|
||||
}
|
||||
|
||||
|
||||
private void testFreeformConvert(FinSet fin) {
|
||||
FreeformFinSet converted;
|
||||
Material mat = Material.newMaterial(Type.BULK, "foo", 0.1, true);
|
||||
|
||||
fin.setBaseRotation(1.1);
|
||||
fin.setCantAngle(0.001);
|
||||
fin.setCGOverridden(true);
|
||||
fin.setColor(Color.BLACK);
|
||||
fin.setComment("cmt");
|
||||
fin.setCrossSection(CrossSection.ROUNDED);
|
||||
fin.setFinCount(5);
|
||||
fin.setFinish(Finish.ROUGH);
|
||||
fin.setLineStyle(LineStyle.DASHDOT);
|
||||
fin.setMassOverridden(true);
|
||||
fin.setMaterial(mat);
|
||||
fin.setOverrideCGX(0.012);
|
||||
fin.setOverrideMass(0.0123);
|
||||
fin.setOverrideSubcomponents(true);
|
||||
fin.setAxialOffset(0.1);
|
||||
fin.setAxialMethod(AxialMethod.ABSOLUTE);
|
||||
fin.setTabHeight(0.01);
|
||||
fin.setTabLength(0.02);
|
||||
fin.setTabRelativePosition(TabRelativePosition.END);
|
||||
fin.setTabShift(0.015);
|
||||
fin.setThickness(0.005);
|
||||
|
||||
|
||||
converted = FreeformFinSet.convertFinSet((FinSet) fin.copy());
|
||||
|
||||
/// what do we want to ACTUALLY compare?
|
||||
// ComponentCompare.assertSimilarity(fin, converted, true); // deprecated; removed
|
||||
|
||||
|
||||
assertEquals(converted.getComponentName(), converted.getName());
|
||||
|
||||
|
||||
// Create test rocket
|
||||
Rocket rocket = new Rocket();
|
||||
AxialStage stage = new AxialStage();
|
||||
BodyTube body = new BodyTube();
|
||||
|
||||
rocket.addChild(stage);
|
||||
stage.addChild(body);
|
||||
body.addChild(fin);
|
||||
rocket.enableEvents();
|
||||
|
||||
Listener l1 = new Listener("l1");
|
||||
rocket.addComponentChangeListener(l1);
|
||||
|
||||
fin.setName("Custom name");
|
||||
assertEquals("FinSet listener has not been notified: ", l1.changed, true);
|
||||
assertEquals(ComponentChangeEvent.NONFUNCTIONAL_CHANGE, l1.changetype);
|
||||
|
||||
|
||||
// Create copy
|
||||
RocketComponent rocketcopy = rocket.copy();
|
||||
|
||||
Listener l2 = new Listener("l2");
|
||||
rocketcopy.addComponentChangeListener(l2);
|
||||
|
||||
FinSet fincopy = (FinSet) rocketcopy.getChild(0).getChild(0).getChild(0);
|
||||
FreeformFinSet.convertFinSet(fincopy);
|
||||
|
||||
assertTrue("FinSet listener is changed", l2.changed);
|
||||
assertEquals(ComponentChangeEvent.TREE_CHANGE,
|
||||
l2.changetype & ComponentChangeEvent.TREE_CHANGE);
|
||||
|
||||
}
|
||||
|
||||
|
||||
private static class Listener implements ComponentChangeListener {
|
||||
private boolean changed = false;
|
||||
private int changetype = 0;
|
||||
private final String name;
|
||||
|
||||
public Listener(String name) {
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void componentChanged(ComponentChangeEvent e) {
|
||||
assertFalse("Ensuring listener " + name + " has not been called.", changed);
|
||||
changed = true;
|
||||
changetype = e.getType();
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,137 @@
|
||||
package net.sf.openrocket.rocketcomponent;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
import net.sf.openrocket.aerodynamics.AerodynamicForces;
|
||||
import net.sf.openrocket.aerodynamics.FlightConditions;
|
||||
import net.sf.openrocket.aerodynamics.WarningSet;
|
||||
import net.sf.openrocket.aerodynamics.barrowman.FinSetCalc;
|
||||
import net.sf.openrocket.material.Material;
|
||||
import net.sf.openrocket.material.Material.Type;
|
||||
import net.sf.openrocket.rocketcomponent.ExternalComponent.Finish;
|
||||
import net.sf.openrocket.rocketcomponent.FinSet.CrossSection;
|
||||
import net.sf.openrocket.rocketcomponent.FinSet.TabRelativePosition;
|
||||
import net.sf.openrocket.rocketcomponent.position.*;
|
||||
import net.sf.openrocket.util.Color;
|
||||
import net.sf.openrocket.util.Coordinate;
|
||||
import net.sf.openrocket.util.LineStyle;
|
||||
import net.sf.openrocket.util.BaseTestCase.BaseTestCase;
|
||||
|
||||
public class TrapezoidFinSetTest extends BaseTestCase {
|
||||
|
||||
@Test
|
||||
public void testTrapezoidCGComputation() {
|
||||
|
||||
{
|
||||
// This is a simple square fin with sides of 1.0.
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(1);
|
||||
fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
|
||||
|
||||
Coordinate coords = fins.getCG();
|
||||
assertEquals(1.0, fins.getFinArea(), 0.001);
|
||||
assertEquals(0.5, coords.x, 0.001);
|
||||
assertEquals(0.5, coords.y, 0.001);
|
||||
}
|
||||
|
||||
{
|
||||
// This is a trapezoid. Height 1, root 1, tip 1/2 no sweep.
|
||||
// It can be decomposed into a rectangle followed by a triangle
|
||||
// +---+
|
||||
// | \
|
||||
// | \
|
||||
// +------+
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(1);
|
||||
fins.setFinShape(1.0, 0.5, 0.0, 1.0, .005);
|
||||
|
||||
Coordinate coords = fins.getCG();
|
||||
assertEquals(0.75, fins.getFinArea(), 0.001);
|
||||
assertEquals(0.3889, coords.x, 0.001);
|
||||
assertEquals(0.4444, coords.y, 0.001);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testInstancePoints_PI_2_BaseRotation() {
|
||||
// This is a simple square fin with sides of 1.0.
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(4);
|
||||
fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
|
||||
fins.setBaseRotation( Math.PI/2 );
|
||||
|
||||
BodyTube body = new BodyTube(1.0, 0.05 );
|
||||
body.addChild( fins );
|
||||
|
||||
Coordinate[] points = fins.getInstanceOffsets();
|
||||
|
||||
assertEquals( 0, points[0].x, 0.00001);
|
||||
assertEquals( 0, points[0].y, 0.00001);
|
||||
assertEquals( 0.05, points[0].z, 0.00001);
|
||||
|
||||
assertEquals( 0, points[1].x, 0.00001);
|
||||
assertEquals( -0.05, points[1].y, 0.00001);
|
||||
assertEquals( 0, points[1].z, 0.00001);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testInstancePoints_PI_4_BaseRotation() {
|
||||
// This is a simple square fin with sides of 1.0.
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(4);
|
||||
fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
|
||||
fins.setBaseRotation( Math.PI/4 );
|
||||
|
||||
BodyTube body = new BodyTube(1.0, 0.05 );
|
||||
body.addChild( fins );
|
||||
|
||||
Coordinate[] points = fins.getInstanceOffsets();
|
||||
|
||||
assertEquals( 0, points[0].x, 0.0001);
|
||||
assertEquals( 0.03535, points[0].y, 0.0001);
|
||||
assertEquals( 0.03535, points[0].z, 0.0001);
|
||||
|
||||
assertEquals( 0, points[1].x, 0.0001);
|
||||
assertEquals( -0.03535, points[1].y, 0.0001);
|
||||
assertEquals( 0.03535, points[1].z, 0.0001);
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
public void testInstanceAngles_zeroBaseRotation() {
|
||||
// This is a simple square fin with sides of 1.0.
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(4);
|
||||
fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
|
||||
fins.setBaseRotation( 0.0 );
|
||||
|
||||
double[] angles = fins.getInstanceAngles();
|
||||
|
||||
assertEquals( angles[0], 0, 0.000001 );
|
||||
assertEquals( angles[1], Math.PI/2, 0.000001 );
|
||||
assertEquals( angles[2], Math.PI, 0.000001 );
|
||||
assertEquals( angles[3], 1.5*Math.PI, 0.000001 );
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testInstanceAngles_90_BaseRotation() {
|
||||
// This is a simple square fin with sides of 1.0.
|
||||
TrapezoidFinSet fins = new TrapezoidFinSet();
|
||||
fins.setFinCount(4);
|
||||
fins.setFinShape(1.0, 1.0, 0.0, 1.0, .005);
|
||||
fins.setBaseRotation( Math.PI/2 );
|
||||
|
||||
double[] angles = fins.getInstanceAngles();
|
||||
|
||||
assertEquals( angles[0], Math.PI/2, 0.000001 );
|
||||
assertEquals( angles[1], Math.PI, 0.000001 );
|
||||
assertEquals( angles[2], 1.5*Math.PI, 0.000001 );
|
||||
assertEquals( angles[3], 0, 0.000001 );
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user