// Tests Intersector class
// Currently tests:
// Vector (T1)
// InverseTransformVector (T2 - not implemented)
// ViewVector alt. constructor (T3)
// Intersection (small scale) (T4 - not implemented)
// Intersection (large scale) (T5 - not implemented)
static string TestIntersector(Intersector IntersectorObj)
{
string output = "\n<size=144>Testing Intersector...</size>\n\n";
// Test 1: Vector from two points
output += "<b>Test 1</b>\n";
Vector3 p1 = new Vector3(0, 0, 0);
Vector3 p2 = new Vector3(2, 2, 2);
output += String.Format("Vector from two points: {0} to {1}\n", pointToStr(p1), pointToStr(p2));
Vector3 result = new Vector3();
IntersectorObj.Vector(p1, p2, ref result);
output += String.Format("Resultant vector: {0}\n\n", pointToStr(result));
// Cannot test Unity Library outside of Unity...
// Test 2: InverseTransformVector
output += "<b>Test 2</b>\n";
GameObject view2 = new GameObject();
view2.name = "ViewFieldTest2";
view2.transform.Rotate(new Vector3(90, 90, 0));
output += String.Format("InverseTransformVector... view-field position: {0}, view-field euler angles: {1}\n",
pointToStr(view2.transform.position), pointToStr(view2.transform.eulerAngles));
Vector3[] unitVectors = unitVectorsArray();
for (int i = 0; i < 8; i++)
{
output += String.Format("Vector{0}: World Space: {1}, View-Field Local Space: {2}\n",
i + 1, pointToStr(unitVectors[i]), pointToStr(view2.transform.InverseTransformVector(unitVectors[i])));
}
output += "\n";
// */
// Test 3: View Vector alt. constructor
output += "<b>Test 3</b>\n";
output += String.Format("ViewVector creation from position vector (in local space)... 2D cross-sectional plane is XY plane.\n");
Vector3 forward = new Vector3(0, 0, 1);
for (int i = 0; i < 8; i++)
{
output += String.Format("Vector{0} {1}: ViewVector{0} (deg): {2}\n",
i + 1, pointToStr(unitVectors[i]), viewVectorToStr(new ViewVector(unitVectors[i])));
}
output += String.Format("Vector {0}: ViewVector (deg): {1}\n",
pointToStr(forward), viewVectorToStr(new ViewVector(forward)));
output += "\n";
// Cannot test Unity Library outside of Unity...
// Test 4: Intersection (small scale)
output += "<b>Test 4</b>\n";
List <Vector3> unitVectorList = new List <Vector3>();
for (int i = 0; i < 8; i++)
{
unitVectorList.Add(unitVectors[i]);
}
GameObject view4 = new GameObject();
view4.name = "ViewFieldTest4";
ViewVector FOV4 = new ViewVector(170, 170);
Frustum projection4 = new Frustum(view4.transform, FOV4);
byte[,] raster4 = new byte[100, 100];
output += String.Format("Intersection... Raster: ({0}x{1}), Frustum FOV: ({2}x{3}), " +
"Frustum Pos: {4}, Frustum EA's: {5}\n" +
"Tested all 8 unit vectors, found intersection points...\n",
raster4.GetLength(0), raster4.GetLength(1), FOV4.Theta, FOV4.Phi,
pointToStr(projection4.Transform.position), pointToStr(projection4.Transform.eulerAngles));
List <PointValue <byte> > intersect = Intersector.Instance.Intersection(projection4, raster4, unitVectorList);
foreach (PointValue <byte> pv in intersect)
{
output += String.Format("Point: {0}, ViewVector: {1}\n",
pointToStr(pv.Point), viewVectorToStr(new ViewVector(pv.Point)));
}
output += "\n";
// Cannot test Unity Library outside of Unity...
// Test 5: Intersection (large scale)
output += "<b>Test 5</b>\n";
System.Random rand = new System.Random();
GameObject view5 = new GameObject();
view5.name = "ViewFieldTest5";
ViewVector FOV5 = new ViewVector(179, 179);
Frustum projection5 = new Frustum(view5.transform, FOV5);
byte[,] raster5 = new byte[100, 100];
int iterations = 100;
Stopwatch stopWatch = new Stopwatch();
Vector3 boundsMin = new Vector3(-5, -5, -5);
Vector3 boundsMax = new Vector3(5, 5, 5);
List <Vector3> randVectors = new List <Vector3>();
for (int i = 0; i < iterations; i++)
{
randVectors.Add(randomPoint(boundsMin, boundsMax, rand));
}
output += String.Format("Intersection... Raster: ({0}x{1}), Frustum FOV: ({2}x{3}). {4} Iterations...\n",
raster5.GetLength(0), raster5.GetLength(1), FOV5.Theta, FOV5.Phi, randVectors.Count);
Intersector tmp = Intersector.Instance;
stopWatch.Reset();
stopWatch.Start();
List <PointValue <byte> > result5 = tmp.Intersection(projection5, raster5, randVectors);
stopWatch.Stop();
long ms = (long)1000 * stopWatch.ElapsedTicks / Stopwatch.Frequency;
output += String.Format("Took {0} ms ({1} us / op)... {2} vectors in view\n", ms,
ms / (double)iterations * 1000.0, result5.Count);
output += "\n";
// Test 6: RequiredGrid
output += "<b>Test 6</b>\n";
ViewVector FOV6 = new ViewVector(60, 60);
output += String.Format("Testing RequiredGrid... FOV: {0}\n", viewVectorToStr(FOV6));
Dictionary <string, int> pixels = Intersector.Instance.RequiredGrid(FOV6);
output += String.Format("i: {0}, j: {1}\n", pixels["i"], pixels["j"]);
output += "\n";
/// Test 7: Occlusion (basic)
output += "<b>Test 7</b>\n";
GameObject view7 = new GameObject();
view7.name = "ViewFieldTest7";
ViewVector FOV7 = new ViewVector(170, 170);
Frustum projection7 = new Frustum(view7.transform, FOV7);
byte[,] raster7 = new byte[100, 100];
for (int i = 0; i < raster7.GetLength(0); i++)
{
for (int j = 0; j < raster7.GetLength(1); j++)
{
raster7[i, j] = (byte)(i + j);
}
}
output += String.Format("Created Frustum: pos: {0}, EA's {1}, FOV: {2}\n",
pointToStr(projection7.Transform.position), pointToStr(projection7.Transform.eulerAngles),
viewVectorToStr(projection7.FOV));
output += String.Format("Created Raster: {0}x{1}\n", raster7.GetLength(0), raster7.GetLength(1));
Vector3 v1 = new Vector3(1, 1, 1);
Vector3 v2 = new Vector3(2, 2, 2);
Vector3 v3 = new Vector3(0, 0, 1);
List <Vector3> vertices7 = new List <Vector3>();
vertices7.Add(v2);
vertices7.Add(v1);
vertices7.Add(v2);
vertices7.Add(v3);
output += String.Format("Trying vertices: v1: {0}, v2: {1}, v3: {2}. Intersection return...\n",
pointToStr(v1), pointToStr(v2), pointToStr(v3));
List <PointValue <byte> > intersectRet = Intersector.Instance.Intersection(projection7, raster7, vertices7);
for (int i = 0; i < intersectRet.Count; i++)
{
output += String.Format("Point: {0}, Value: {1}\n",
pointToStr(intersectRet[i].Point), intersectRet[i].Value);
}
output += "\n";
// Test 8: Occlusion (large scale)
output += "<b>Test 8</b>\n";
GameObject view8 = new GameObject();
view8.name = "ViewFieldTest8";
ViewVector FOV8 = new ViewVector(170, 170);
Frustum projection8 = new Frustum(view8.transform, FOV8);
byte[,] raster8 = new byte[100, 100];
output += String.Format("Created Frustum: pos: {0}, EA's {1}, FOV: {2}\n",
pointToStr(projection8.Transform.position), pointToStr(projection8.Transform.eulerAngles),
viewVectorToStr(projection8.FOV));
output += String.Format("Created Raster: {0}x{1}\n", raster8.GetLength(0), raster8.GetLength(1));
// create 'wall' vertices
double wallSize = 4.0;
double wallRes = 0.05;
double wallDistance = 3.0;
float wallWiggle = 0.001f;
int wallPixels = (int)(wallSize / wallRes);
double wallBotLeft = -(wallSize / 2.0);
int wallValue = 0;
int wallCount = (int)Math.Pow(wallPixels, 2);
List <Vector3> vertices = new List <Vector3>();
for (int i = 0; i < wallPixels; i++)
{
for (int j = 0; j < wallPixels; j++)
{
float vertX = (float)(i * wallRes + wallBotLeft);
float vertY = (float)(j * wallRes + wallBotLeft);
float vertZ = (float)wallDistance;
Vector3 vert = new Vector3(vertX, vertY, vertZ);
vertices.Add(wiggleVert(vert, wallWiggle, rand));
}
}
// create 'box' vertices
float boxSize = 1f;
Vector3 boxMin = new Vector3(-boxSize / 2, -boxSize / 2, (float)(wallDistance + 1));
Vector3 boxMax = new Vector3(boxSize / 2, boxSize / 2, (float)(wallDistance + 1 + boxSize));
int boxCount = 10000;
for (int i = 0; i < boxCount; i++)
{
vertices.Add(randomPoint(boxMin, boxMax, rand));
}
// report progress
output += String.Format("Created wall... ({0},{0}) to ({1},{1}), z: {2}, wiggle: {3}, " +
"vertices: {4}, resolution (m): {5}\n",
wallBotLeft, wallBotLeft + wallSize, wallDistance, wallWiggle, wallCount, wallRes);
output += String.Format("Created box: {0} to {1}, vertices: {2}\n",
pointToStr(boxMin), pointToStr(boxMax), boxCount);
// run intersection
List <PointValue <byte> > intersectRet8 = Intersector.Instance.Intersection(projection8, raster8, vertices);
int wallCountRet = 0;
int boxCountRet = 0;
for (int i = 0; i < intersectRet8.Count; i++)
{
Vector3 point = intersectRet8[i].Point;
if (within(point, boxMin, boxMax))
{
boxCountRet++;
}
else
{
wallCountRet++;
}
}
output += String.Format("Intersection Return... wall vertices: {0}/{1}, box vertices: {2}/{3}",
wallCountRet, wallCount, boxCountRet, boxCount);
return(output);
}
