protected override void OnEnabledInHierarchyChanged()
{
base.OnEnabledInHierarchyChanged();
if (EnabledInHierarchy)
{
//get free camera initial settings
if (EngineApp.ApplicationType == EngineApp.ApplicationTypeEnum.Simulation)
{
var scene = Parent as Component_Scene;
if (scene != null)
{
Component_Camera camera = scene.CameraDefault;
if (camera == null)
{
camera = scene.Mode.Value == Component_Scene.ModeEnum._2D ? scene.CameraEditor2D : scene.CameraEditor;
}
if (camera != null)
{
var tr = camera.TransformV;
freeCameraPosition = tr.Position;
freeCameraDirection = SphericalDirection.FromVector(tr.Rotation.GetForward());
}
}
}
}
}
public static void Multiply(ref SphericalDirection d, ref Quaternion q, out SphericalDirection result)
{
Vector3 vector;
d.GetVector(out vector);
Vector3 vector2;
Quaternion.Multiply(ref vector, ref q, out vector2);
SphericalDirection.FromVector(ref vector2, out result);
}
protected override void OnEnabledInHierarchyChanged()
{
base.OnEnabledInHierarchyChanged();
if (EnabledInHierarchy)
{
var character = Character;
if (character != null)
{
//get initial look direction
lookDirection = SphericalDirection.FromVector(character.TransformV.Rotation.GetForward());
}
}
}
public static void GenerateIcoSphere(double radius, int subdivisions, bool insideOut,
out Vector3[] positions, out Vector3[] normals, out Vector4[] tangents, out Vector2[] texCoords, out int[] indices, out Face[] faces)
{
var faceCount = 20; // 20 faces, icosahedronIndexes.Length / 3
var vCount = 12; // 12 vertices
var divCount = subdivisions;
/* /\
* / \
* /____\
* /\ /\
* / \ / \
* /____\/____\ */
while (divCount-- > 0)
{
// 3 new vetices for each face
vCount += faceCount * 3;
// subdivide each face by 4 new ones
faceCount *= 4;
}
List <int> vertexIndexList; //viList.count == pList.Count (the vertex index of element in pList)
var pList = new List <Vector3>(vCount);
var nList = new List <Vector3>(vCount);
var tList = new List <Vector4>(vCount);
var txList = new List <Vector2>(vCount);
var indexList = new List <int>(icosahedronIndexes);
var t = (1.0 + Math.Sqrt(5.0)) / 2.0;
//icosahedron
nList.Add(new Vector3(-1, t, 0).GetNormalize());
nList.Add(new Vector3(1, t, 0).GetNormalize());
nList.Add(new Vector3(-1, -t, 0).GetNormalize());
nList.Add(new Vector3(1, -t, 0).GetNormalize());
nList.Add(new Vector3(0, -1, t).GetNormalize());
nList.Add(new Vector3(0, 1, t).GetNormalize());
nList.Add(new Vector3(0, -1, -t).GetNormalize());
nList.Add(new Vector3(0, 1, -t).GetNormalize());
nList.Add(new Vector3(t, 0, -1).GetNormalize());
nList.Add(new Vector3(t, 0, 1).GetNormalize());
nList.Add(new Vector3(-t, 0, -1).GetNormalize());
nList.Add(new Vector3(-t, 0, 1).GetNormalize());
foreach (var n in nList)
{
pList.Add(n * radius);
}
//!!!!GC
var cache = new Dictionary <long, int>();
// Refine faces
for (int iter = 0; iter < subdivisions; iter++)
{
var newindices = new List <int>(indexList.Count / 3 * 12);
for (int i = 0; i < indexList.Count / 3; i++)
{
var i1 = indexList[i * 3];
var i2 = indexList[i * 3 + 1];
int i3 = indexList[i * 3 + 2];
// get mid points
int a = CreateMiddlePoint(pList, i1, i2, cache, radius, nList);
int b = CreateMiddlePoint(pList, i2, i3, cache, radius, nList);
int c = CreateMiddlePoint(pList, i3, i1, cache, radius, nList);
//Push 4 triangles
newindices.Add(i1);
newindices.Add(a);
newindices.Add(c);
newindices.Add(i2);
newindices.Add(b);
newindices.Add(a);
newindices.Add(i3);
newindices.Add(c);
newindices.Add(b);
newindices.Add(a);
newindices.Add(b);
newindices.Add(c);
}
indexList = newindices;
}
//tangents and texcoords
{
var rotationMatrix = new Matrix3(0, -1, 0, 1, 0, 0, 0, 0, 1);
for (int n = 0; n < nList.Count; n++)
{
var p = nList[n];
var rot = Quaternion.FromDirectionZAxisUp(p).ToMatrix3() * rotationMatrix;
Vector4 tan;
if (insideOut)
{
tan = new Vector4(rot * Vector3.XAxis, -1);
}
else
{
tan = new Vector4(rot * -Vector3.XAxis, -1);
}
tList.Add(tan);
var dir = SphericalDirection.FromVector(p);
var tx = new Vector2(
dir.Horizontal / (MathEx.PI * 2) * 2, // [-1..1]
-dir.Vertical / MathEx.PI + 0.5); // [0..1]
//var tx = new Vec2(
// ( 0.5 - Math.Atan2( p.X, p.Z ) / Math.PI * 2 ),
// ( 0.5 - Math.Asin( p.Y ) / Math.PI ));
txList.Add(tx);
}
}
bool upUsed = false;
bool downUsed = false;
//all the vertices in pList now have the unique positions. No more unique positions.
vertexIndexList = new List <int>(pList.Count);
for (int i = 0; i < pList.Count; i++)
{
vertexIndexList.Add(i);
}
// Correct poles.
for (int i = 0; i < indexList.Count; i += 3)
{
var vidx1 = indexList[i];
var vidx2 = indexList[i + 1];
var vidx3 = indexList[i + 2];
var n1 = nList[vidx1];
var n2 = nList[vidx2];
var n3 = nList[vidx3];
if (Math.Abs(n1.Z) == 1)
{
var dirUp = SphericalDirection.FromVector(n1);
var mid = (pList[vidx2] + pList[vidx3]) * .5;
var dir = SphericalDirection.FromVector(Vector3.Normalize(mid));
dir.Vertical = dirUp.Vertical;
var txt = new Vector2(
dir.Horizontal / (MathEx.PI * 2) * 2, // [-1..1]
-dir.Vertical / MathEx.PI + 0.5); // [0..1]
var update = false;
if (n1.Z == 1 && !upUsed) //up
{
update = true;
upUsed = true;
}
if (n1.Z == -1 && !downUsed) //down
{
update = true;
downUsed = true;
}
if (update)
{
txList[vidx1] = txt;
}
else
{
// vertex1 is new pole, duplicate it and update the face.
//newVertexIndex = pList.Count;
indexList[i] = pList.Count;
pList.Add(pList[vidx1]);
vertexIndexList.Add(vertexIndexList[vidx1]);
nList.Add(nList[vidx1]);
tList.Add(tList[vidx1]);
txList.Add(txt);
}
}
else if (Math.Abs(n2.Z) == 1)
{
var dirUp = SphericalDirection.FromVector(n2);
var mid = (pList[vidx1] + pList[vidx3]) * .5;
var dir = SphericalDirection.FromVector(Vector3.Normalize(mid));
dir.Vertical = dirUp.Vertical;
var txt = new Vector2(
dir.Horizontal / (MathEx.PI * 2) * 2, // [-1..1]
-dir.Vertical / MathEx.PI + 0.5); // [0..1]
var update = false;
if (n1.Z == 1 && !upUsed) //up
{
update = true;
upUsed = true;
}
if (n1.Z == -1 && !downUsed) //down
{
update = true;
downUsed = true;
}
if (update)
{
txList[vidx2] = txt;
}
else
{
// vertex2 is new pole, duplicate it and update the face.
//newVertexIndex = pList.Count;
indexList[i + 1] = pList.Count;
pList.Add(pList[vidx2]);
vertexIndexList.Add(vertexIndexList[vidx2]);
nList.Add(nList[vidx2]);
tList.Add(tList[vidx2]);
txList.Add(txt);
}
}
else if (Math.Abs(n3.Z) == 1)
{
var dirUp = SphericalDirection.FromVector(n3);
var mid = (pList[vidx1] + pList[vidx2]) * .5;
var dir = SphericalDirection.FromVector(Vector3.Normalize(mid));
dir.Vertical = dirUp.Vertical;
var txt = new Vector2(
dir.Horizontal / (MathEx.PI * 2) * 2, // [-1..1]
-dir.Vertical / MathEx.PI + 0.5); // [0..1]
var update = false;
if (n1.Z == 1 && !upUsed) //up
{
update = true;
upUsed = true;
}
if (n1.Z == -1 && !downUsed) //down
{
update = true;
downUsed = true;
}
if (update)
{
txList[vidx3] = txt;
}
else
{
// vertex3 is new pole, duplicate it and update the face.
//newVertexIndex = pList.Count;
indexList[i + 2] = pList.Count;
pList.Add(pList[vidx3]);
vertexIndexList.Add(vertexIndexList[vidx3]);
nList.Add(nList[vidx3]);
tList.Add(tList[vidx3]);
txList.Add(txt);
}
}
}
//!!!!GC
var correctionMap = new Dictionary <int, int>();
//correct seam
for (int i = indexList.Count - 3; i >= 0; i -= 3)
{
var v0 = new Vector3(txList[indexList[i + 0]], 0);
var v1 = new Vector3(txList[indexList[i + 1]], 0);
var v2 = new Vector3(txList[indexList[i + 2]], 0);
var cross = Vector3.Cross(v0 - v1, v2 - v1);
if (cross.Z <= 0) //test if the face crosses a texture boundary.
{
for (var j = i; j < i + 3; j++)
{
var index = indexList[j];
var texCoord = txList[index];
var shift = 0.0;
if (texCoord.X >= .8)
{
shift = -2;
}
//if( texCoord.X <= -.8 )
// shift = 2;
if (shift == 0)
{
continue;
}
if (correctionMap.ContainsKey(index))
{
indexList[j] = correctionMap[index];
}
else
{
texCoord.X += shift;
txList.Add(texCoord);
pList.Add(pList[index]);
vertexIndexList.Add(vertexIndexList[index]);
nList.Add(nList[index]);
tList.Add(tList[index]);
var correctedVertexIndex = txList.Count - 1;
correctionMap.Add(index, correctedVertexIndex);
indexList[j] = correctedVertexIndex;
}
}
}
}
positions = pList.ToArray();
normals = nList.ToArray();
tangents = tList.ToArray();
texCoords = txList.ToArray();
indices = indexList.ToArray();
if (insideOut)
{
var idx = 0;
while (idx < indices.Length)
{
var temp = indices[idx + 1];
indices[idx + 1] = indices[idx + 2];
indices[idx + 2] = temp;
idx += 3;
}
idx = 0;
while (idx < normals.Length)
{
Vector3.Negate(ref normals[idx], out normals[idx]);
idx++;
}
for (int n = 0; n < texCoords.Length; n++)
{
texCoords[n] = new Vector2(1.0f - texCoords[n].X, texCoords[n].Y);
}
}
const int rawVerticesInFace = 3;
faces = new Face[indices.Length / rawVerticesInFace];
for (int i = 0; i < indices.Length; i += rawVerticesInFace)
{
faces[i / 3] = new Face(new FaceVertex[] {
new FaceVertex(vertexIndexList[indices[i]], indices[i]),
new FaceVertex(vertexIndexList[indices[i + 1]], indices[i + 1]),
new FaceVertex(vertexIndexList[indices[i + 2]], indices[i + 2]),
});
}
//faces = new Face[ indices.Length / rawVerticesInFace ];
//int curTriangle = 0;
//int curFace = 0;
//FaceVertex[] faceTriangles = null;
//for( int i = 0; i < indices.Length; i++ )
//{
// if( faceTriangles == null )
// {
// faceTriangles = new FaceVertex[ rawVerticesInFace ];
// curTriangle = 0;
// }
// faceTriangles[ curTriangle++ ] = new FaceVertex( vertexIndexList[ indices[ i ] ], indices[ i ] );
// if( curTriangle == rawVerticesInFace )
// {
// faces[ curFace++ ] = new Face( faceTriangles );
// faceTriangles = null;
// }
//}
}