private void AddBoxAndBoxBooleanTest()
{
BoxShape box1 = new BoxShape(new Vector3(.5, .5, .5), new Vector3(1.5, 1.5, 1.5),
new SolidMaterial(RGBA_Floats.Green, .01, 0.0, 2.0));
List<IPrimitive> subtractShapes = new List<IPrimitive>();
SolidMaterial material = new SolidMaterial(RGBA_Floats.Red, 0, 0, 0);
subtractShapes.Add(new BoxShape(new Vector3(), new Vector3(1, 1, 1), material));
IPrimitive subtractGroup = BoundingVolumeHierarchy.CreateNewHierachy(subtractShapes);
Difference merge = new Difference(box1, subtractGroup);
renderCollection.Add(merge);
}
public void DifferenceTestsForBox()
{
SolidMaterial redMaterial = new SolidMaterial(RGBA_Floats.Red, 0, 0, 0);
SolidMaterial blueMaterial = new SolidMaterial(RGBA_Floats.Blue, 0, 0, 0);
Ray castRay = new Ray(new Vector3(0, -1, 0), Vector3.UnitY);
BoxShape box1X1 = new BoxShape(new Vector3(-.5, -.5, -.5), new Vector3(.5, .5, .5), blueMaterial);
// just a box all by itself
{
IntersectInfo testInfo = box1X1.GetClosestIntersection(castRay);
Assert.IsTrue(testInfo.hitType == IntersectionType.FrontFace, "Found Hit : Box No CSG");
Assert.IsTrue(testInfo.closestHitObject == box1X1, "Found Hit : Box No CSG");
Assert.IsTrue(testInfo.hitPosition == new Vector3(0, -.5, 0), "Hit position y = -.5 : Box No CSG");
Assert.IsTrue(testInfo.distanceToHit == .5, "Hit length = .5 : Box No CSG");
Assert.IsTrue(testInfo.normalAtHit == -Vector3.UnitY, "Normal Correct : Box No CSG");
}
// one subtract from the front of a box, the front faces are aligned
{
BoxShape subtractBox = new BoxShape(new Vector3(-.5, -.5, -.5), new Vector3(.5, 0, .5), redMaterial);
Difference merge = new Difference(box1X1, subtractBox);
IntersectInfo testInfo = merge.GetClosestIntersection(castRay);
Assert.IsTrue(testInfo.hitType == IntersectionType.FrontFace, "Found Hit : One Subtract");
Assert.IsTrue(testInfo.closestHitObject == subtractBox, "Found Hit : One Subtract");
Assert.IsTrue(testInfo.hitPosition == new Vector3(0, 0, 0), "Hit position y = 0 : One Subtract");
Assert.IsTrue(testInfo.distanceToHit == 1, "Hit length = 1 : One Subtract");
Assert.IsTrue(testInfo.normalAtHit == -Vector3.UnitY, "Normal Correct : One Subtract");
}
#if false
// An internal primary object that needs to be skipped over
{
List<IPrimitive> primaryShapes = new List<IPrimitive>();
BoxShape insideBox = new BoxShape(new Vector3(-.1, -.1, -.1), new Vector3(.1, .1, .1), blueMaterial);
primaryShapes.Add(box1X1);
primaryShapes.Add(insideBox);
IPrimitive primamryGroup = BoundingVolumeHierarchy.CreateNewHierachy(primaryShapes);
List<IPrimitive> subtractShapes = new List<IPrimitive>();
subtractShapes.Add(new BoxShape(new Vector3(-.5, -.5, -.5), new Vector3(.5, .4, .5), redMaterial));
IPrimitive subtractGroup = BoundingVolumeHierarchy.CreateNewHierachy(subtractShapes);
Difference merge = new Difference(primamryGroup, subtractGroup);
IntersectInfo testInfo = merge.GetClosestIntersection(castRay);
Assert.IsTrue(testInfo.isHit == true, "Found Hit : 5 Subtracts");
//Assert.IsTrue(testInfo.closestHitObject == subtractBox, "Found Hit : 5 Subtracts");
Assert.IsTrue(testInfo.hitPosition == new Vector3(0, 0, 0), "Hit position y = 0 : 5 Subtracts");
Assert.IsTrue(testInfo.distanceToHit == 1, "Hit length = 1 : 5 Subtracts");
Assert.IsTrue(testInfo.normalAtHit == -Vector3.UnitY, "Normal Correct : 5 Subtracts");
}
// Go through 5 subtract boxes to get to 1/2 way through the main box.
{
List<IPrimitive> subtractShapes = new List<IPrimitive>();
for (int i = 0; i < 5; i++)
{
subtractShapes.Add(new BoxShape(new Vector3(-.5, -.5 + i * .1, -.5), new Vector3(.5, -.4 + i * .1, .5), redMaterial));
}
IPrimitive subtractGroup = BoundingVolumeHierarchy.CreateNewHierachy(subtractShapes);
Difference merge = new Difference(box1X1, subtractGroup);
IntersectInfo testInfo = merge.GetClosestIntersection(castRay);
Assert.IsTrue(testInfo.isHit == true, "Found Hit : 5 Subtracts");
//Assert.IsTrue(testInfo.closestHitObject == subtractBox, "Found Hit : 5 Subtracts");
Assert.IsTrue(testInfo.hitPosition == new Vector3(0, 0, 0), "Hit position y = 0 : 5 Subtracts");
Assert.IsTrue(testInfo.distanceToHit == 1, "Hit length = 1 : 5 Subtracts");
Assert.IsTrue(testInfo.normalAtHit == -Vector3.UnitY, "Normal Correct : 5 Subtracts");
}
#endif
}
private void AddBoxAndSheresBooleanTest()
{
BoxShape box1 = new BoxShape(new Vector3(.5, .5, .5), new Vector3(1.5, 1.5, 1.5),
new SolidMaterial(RGBA_Floats.Green, 0, 0, 0));//.01, 0.0, 2.0));
List<IPrimitive> subtractShapes = new List<IPrimitive>();
SolidMaterial material = new SolidMaterial(RGBA_Floats.Red, 0, 0, 0);
#if false
// two big spheres. Looks good.
subtractShapes.Add(new SphereShape(new Vector3(.5, .5, 1), .6, material));
subtractShapes.Add(new SphereShape(new Vector3(1.5, .5, 1), .6, material));
Transform cylinder = new Transform(new CylinderShape(.1, 3, material));
cylinder.MoveToAbsolute(1, 1, 1);
cylinder.RotateRelative(.1, .6, .6);
//subtractShapes.Add(cylinder);
//renderCollection.Add(cylinder);
#else
for (int z = 0; z < 6; z++)
{
for (int y = 0; y < 6; y++)
{
for (int x = 0; x < 6; x++)
{
subtractShapes.Add(new SphereShape(new Vector3(x * .2 + .5, y * .2 + .5, z * .2 + .5), .1, material));
//subtractShapes.Add(new SphereShape(new Vector3(x * .2 + .5, y * .2 + .5, z * .2 + .5), .13, material));
}
}
}
#endif
IPrimitive subtractGroup = BoundingVolumeHierarchy.CreateNewHierachy(subtractShapes);
Difference merge = new Difference(box1, subtractGroup);
renderCollection.Add(merge);
}