/*
* Vertices distributed in a grid pattern like the example below
* Example for pattern with step set to 4
* 24
* 19 23
* 14 18 22
* 9 13 17 21
* 4 8 12 16 20
* 3 7 11 15
* 2 6 10
* 1 5
* 0
*
*/
private void PopulateVertexList(PositionTexture[] vertexList, int step)
{
for (int i = 0; i < step; i += 2)
{
for (int j = 0; j < step; j += 2)
{
Vector3d[] points = this.Boundaries(j, i, step);
vertexList[i * (step + 1) + j] = PositionTexture.CreatePos(points[2], (1 / step) * i, (1 / step) * j);
vertexList[i * (step + 1) + j + 1] = PositionTexture.CreatePos(points[3], (1 / step) * i, (1 / step) + (1 / step) * j);
vertexList[(i + 1) * (step + 1) + j] = PositionTexture.CreatePos(points[1], (1 / step) + (1 / step) * i, (1 / step) * j);
vertexList[(i + 1) * (step + 1) + j + 1] = PositionTexture.CreatePos(points[0], (1 / step) + (1 / step) * i, (1 / step) + (1 / step) * j);
if (j + 2 >= step && step > 1)
{
j = step - 1;
points = this.Boundaries(j, i, step);
vertexList[i * (step + 1) + step] = PositionTexture.CreatePos(points[3], (1 / step) * i, (1 / step) + (1 / step) * j);
vertexList[(i + 1) * (step + 1) + step] = PositionTexture.CreatePos(points[0], (1 / step) + (1 / step) * i, (1 / step) + (1 / step) * j);
}
}
}
if (step > 1)
{
VertexOfLastRow(vertexList, step);
}
}
private PositionTexture Midpoint(PositionTexture positionNormalTextured, PositionTexture positionNormalTextured_2)
{
Vector3d a1 = Vector3d.Lerp(positionNormalTextured.Position, positionNormalTextured_2.Position, .5f);
Vector2d a1uv = Vector2d.Lerp(Vector2d.Create(positionNormalTextured.Tu, positionNormalTextured.Tv), Vector2d.Create(positionNormalTextured_2.Tu, positionNormalTextured_2.Tv), .5f);
a1.Normalize();
return(PositionTexture.CreatePos(a1, a1uv.X, a1uv.Y));
}
private void VertexOfLastRow(PositionTexture[] vertexList, int step)
{
int i = step - 1;
for (int j = 0; j < step; j += 2)
{
Vector3d[] points = this.Boundaries(j, i, step);
vertexList[(i + 1) * (step + 1) + j] = PositionTexture.CreatePos(points[1], (1 / step) + (1 / step) * i, (1 / step) * j);
vertexList[(i + 1) * (step + 1) + j + 1] = PositionTexture.CreatePos(points[0], (1 / step) + (1 / step) * i, (1 / step) + (1 / step) * j);
if (j + 2 >= step)
{
j = step - 1;
points = this.Boundaries(j, i, step);
vertexList[(i + 1) * (step + 1) + step] = PositionTexture.CreatePos(points[0], (1 / step) + (1 / step) * i, (1 / step) + (1 / step) * j);
}
}
}
public override bool CreateGeometry(RenderContext renderContext)
{
base.CreateGeometry(renderContext);
if (GeometryCreated)
{
return(true);
}
GeometryCreated = true;
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
ComputeMatrix();
Height = texture.NaturalHeight;
Width = texture.NaturalWidth;
double latMin = 0 + (ScaleY * (Height - PixelCenterY));
double latMax = 0 - (ScaleY * PixelCenterY);
double lngMin = 0 + (ScaleX * PixelCenterX);
double lngMax = 0 - (ScaleX * (Width - PixelCenterX));
TopLeft = GeoTo3dTan(latMin, lngMin);
BottomRight = GeoTo3dTan(latMax, lngMax);
TopRight = GeoTo3dTan(latMin, lngMax);
BottomLeft = GeoTo3dTan(latMax, lngMin);
Vector3d topCenter = Vector3d.Lerp(TopLeft, TopRight, .5f);
Vector3d bottomCenter = Vector3d.Lerp(BottomLeft, BottomRight, .5f);
Vector3d center = Vector3d.Lerp(topCenter, bottomCenter, .5f);
Vector3d rightCenter = Vector3d.Lerp(TopRight, BottomRight, .5f);
Vector3d leftCenter = Vector3d.Lerp(TopLeft, BottomLeft, .5f);
//Vector3d center = Vector3d.MidPoint(TopLeft, BottomRight);
//Vector3d leftCenter = Vector3d.MidPoint(TopLeft, BottomLeft);
//Vector3d rightCenter = Vector3d.MidPoint(TopRight, BottomRight);
//Vector3d topCenter = Vector3d.MidPoint(TopLeft, TopRight);
//Vector3d bottomCenter = Vector3d.MidPoint(BottomLeft, BottomRight);
//verts[0].Position = TopLeft;
//verts[0].Normal = TopLeft;
//verts[0].Tu = 0;
//verts[0].Tv = 0;
//verts[1].Position = TopRight;
//verts[1].Normal = TopRight;
//verts[1].Tu = 1;
//verts[1].Tv = 0;
//verts[2].Position = BottomRight;
//verts[2].Normal = BottomRight;
//verts[2].Tu = 1;
//verts[2].Tv = 1;
//verts[3].Position = BottomLeft;
//verts[3].Normal = BottomLeft;
//verts[3].Tu = 0;
//verts[3].Tv = 1;
if (renderContext.gl == null)
{
//RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePosSize(TopLeft, 0, 0, Width, Height), PositionTexture.CreatePosSize(BottomLeft, 0, 1, Width, Height), PositionTexture.CreatePosSize(TopRight, 1, 0, Width, Height), texture, Level));
//RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePosSize(BottomLeft, 0, 1, Width, Height), PositionTexture.CreatePosSize(BottomRight, 1, 1, Width, Height), PositionTexture.CreatePosSize(TopRight, 1, 0, Width, Height), texture, Level));
vertexList = new List <PositionTexture>();
vertexList.Add(PositionTexture.CreatePosSize(TopLeft, 0, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(TopRight, 1, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomLeft, 0, 1, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomRight, 1, 1, Width, Height));
childTriangleList = new List <Triangle>();
if (dataset.BottomsUp)
{
childTriangleList.Add(Triangle.Create(0, 1, 2));
childTriangleList.Add(Triangle.Create(2, 1, 3));
}
else
{
childTriangleList.Add(Triangle.Create(0, 2, 1));
childTriangleList.Add(Triangle.Create(2, 3, 1));
}
int count = 3;
while (count-- > 1)
{
List <Triangle> newList = new List <Triangle>();
foreach (Triangle tri in childTriangleList)
{
tri.SubDivide(newList, vertexList);
}
childTriangleList = newList;
}
double miter = .6 / (Width / 256);
foreach (Triangle tri in childTriangleList)
{
PositionTexture p1 = vertexList[tri.A];
PositionTexture p2 = vertexList[tri.B];
PositionTexture p3 = vertexList[tri.C];
RenderTriangleLists[0].Add(RenderTriangle.CreateWithMiter(p1, p2, p3, texture, Level, miter));
}
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(9 * 5);
float[] buffer = (float[])(object)f32array;
int index = 0;
index = AddVertex(buffer, index, PositionTexture.CreatePos(bottomCenter, .5, 1)); //0
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomLeft, 0, 1)); //1
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomRight, 1, 1)); //2
index = AddVertex(buffer, index, PositionTexture.CreatePos(center, .5, .5)); //3
index = AddVertex(buffer, index, PositionTexture.CreatePos(leftCenter, 0, .5)); //4
index = AddVertex(buffer, index, PositionTexture.CreatePos(rightCenter, 1, .5)); //5
index = AddVertex(buffer, index, PositionTexture.CreatePos(topCenter, .5, 0)); //6
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopLeft, 0, 0)); //7
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopRight, 1, 0)); //8
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
// process index buffers
for (int i = 0; i < 4; i++)
{
index = 0;
TriangleCount = 2;
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
switch (i)
{
case 0:
indexArray[index++] = 7;
indexArray[index++] = 4;
indexArray[index++] = 6;
indexArray[index++] = 4;
indexArray[index++] = 3;
indexArray[index++] = 6;
break;
case 1:
indexArray[index++] = 6;
indexArray[index++] = 5;
indexArray[index++] = 8;
indexArray[index++] = 6;
indexArray[index++] = 3;
indexArray[index++] = 5;
break;
case 2:
indexArray[index++] = 4;
indexArray[index++] = 0;
indexArray[index++] = 3;
indexArray[index++] = 4;
indexArray[index++] = 1;
indexArray[index++] = 0;
break;
case 3:
indexArray[index++] = 3;
indexArray[index++] = 2;
indexArray[index++] = 5;
indexArray[index++] = 3;
indexArray[index++] = 0;
indexArray[index++] = 2;
break;
}
IndexBuffers[i] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[i]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
}
}
return(true);
}
public override bool CreateGeometry(RenderContext renderContext)
{
base.CreateGeometry(renderContext);
if (GeometryCreated)
{
return(true);
}
if (dataset.WcsImage is FitsImage && RenderContext.UseGlVersion2)
{
FitsImage fitsImage = dataset.WcsImage as FitsImage;
texture2d = PrepDevice.createTexture();
PrepDevice.bindTexture(GL.TEXTURE_2D, texture2d);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
PrepDevice.texImage2D(GL.TEXTURE_2D, 0, GL.R32F, (int)fitsImage.SizeX, (int)fitsImage.SizeY, 0, GL.RED, GL.FLOAT, fitsImage.dataUnit);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
Width = fitsImage.SizeX;
Height = fitsImage.SizeY;
}
else
{
WcsImage wcsImage = dataset.WcsImage as WcsImage;
if (wcsImage != null)
{
Bitmap bmp = wcsImage.GetBitmap();
texture2d = bmp.GetTexture();
if (bmp.Height != wcsImage.SizeY)
{
PixelCenterY += bmp.Height - wcsImage.SizeY;
}
if (renderContext.gl != null)
{
Height = bmp.Height;
Width = bmp.Width;
}
}
else
{
Height = texture.NaturalHeight;
Width = texture.NaturalWidth;
}
}
GeometryCreated = true;
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
ComputeMatrix();
double latMin = 0 + (ScaleY * (Height - PixelCenterY));
double latMax = 0 - (ScaleY * PixelCenterY);
double lngMin = 0 + (ScaleX * PixelCenterX);
double lngMax = 0 - (ScaleX * (Width - PixelCenterX));
TopLeft = GeoTo3dTan(latMin, lngMin);
BottomRight = GeoTo3dTan(latMax, lngMax);
TopRight = GeoTo3dTan(latMin, lngMax);
BottomLeft = GeoTo3dTan(latMax, lngMin);
Vector3d topCenter = Vector3d.Lerp(TopLeft, TopRight, .5f);
Vector3d bottomCenter = Vector3d.Lerp(BottomLeft, BottomRight, .5f);
Vector3d center = Vector3d.Lerp(topCenter, bottomCenter, .5f);
Vector3d rightCenter = Vector3d.Lerp(TopRight, BottomRight, .5f);
Vector3d leftCenter = Vector3d.Lerp(TopLeft, BottomLeft, .5f);
if (renderContext.gl == null)
{
vertexList = new List <PositionTexture>();
vertexList.Add(PositionTexture.CreatePosSize(TopLeft, 0, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(TopRight, 1, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomLeft, 0, 1, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomRight, 1, 1, Width, Height));
childTriangleList = new List <Triangle>();
if (dataset.BottomsUp)
{
childTriangleList.Add(Triangle.Create(0, 1, 2));
childTriangleList.Add(Triangle.Create(2, 1, 3));
}
else
{
childTriangleList.Add(Triangle.Create(0, 2, 1));
childTriangleList.Add(Triangle.Create(2, 3, 1));
}
int count = 3;
while (count-- > 1)
{
List <Triangle> newList = new List <Triangle>();
foreach (Triangle tri in childTriangleList)
{
tri.SubDivide(newList, vertexList);
}
childTriangleList = newList;
}
double miter = .6 / (Width / 256);
foreach (Triangle tri in childTriangleList)
{
PositionTexture p1 = vertexList[tri.A];
PositionTexture p2 = vertexList[tri.B];
PositionTexture p3 = vertexList[tri.C];
RenderTriangleLists[0].Add(RenderTriangle.CreateWithMiter(p1, p2, p3, texture, Level, miter));
}
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(9 * 5);
float[] buffer = (float[])(object)f32array;
int index = 0;
index = AddVertex(buffer, index, PositionTexture.CreatePos(bottomCenter, .5, 1)); //0
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomLeft, 0, 1)); //1
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomRight, 1, 1)); //2
index = AddVertex(buffer, index, PositionTexture.CreatePos(center, .5, .5)); //3
index = AddVertex(buffer, index, PositionTexture.CreatePos(leftCenter, 0, .5)); //4
index = AddVertex(buffer, index, PositionTexture.CreatePos(rightCenter, 1, .5)); //5
index = AddVertex(buffer, index, PositionTexture.CreatePos(topCenter, .5, 0)); //6
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopLeft, 0, 0)); //7
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopRight, 1, 0)); //8
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
// process index buffers
for (int i = 0; i < 4; i++)
{
index = 0;
TriangleCount = 2;
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
switch (i)
{
case 0:
indexArray[index++] = 7;
indexArray[index++] = 4;
indexArray[index++] = 6;
indexArray[index++] = 4;
indexArray[index++] = 3;
indexArray[index++] = 6;
break;
case 1:
indexArray[index++] = 6;
indexArray[index++] = 5;
indexArray[index++] = 8;
indexArray[index++] = 6;
indexArray[index++] = 3;
indexArray[index++] = 5;
break;
case 2:
indexArray[index++] = 4;
indexArray[index++] = 0;
indexArray[index++] = 3;
indexArray[index++] = 4;
indexArray[index++] = 1;
indexArray[index++] = 0;
break;
case 3:
indexArray[index++] = 3;
indexArray[index++] = 2;
indexArray[index++] = 5;
indexArray[index++] = 3;
indexArray[index++] = 0;
indexArray[index++] = 2;
break;
}
IndexBuffers[i] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[i]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
}
}
return(true);
}
public override bool CreateGeometry(RenderContext renderContext)
{
base.CreateGeometry(renderContext);
if (renderContext.gl == null)
{
if (dataset.DataSetType == ImageSetType.Earth || dataset.DataSetType == ImageSetType.Planet)
{
subDivisionLevel = Math.Max(2, (4 - Level) * 2);
}
}
else
{
subDivisionLevel = 32;
}
try
{
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
if (!topDown)
{
return(CreateGeometryBottomsUp(renderContext));
}
double lat, lng;
int index = 0;
double tileDegrees = this.dataset.BaseTileDegrees / (Math.Pow(2, this.Level));
double latMin = (90 - (((double)this.tileY) * tileDegrees));
double latMax = (90 - (((double)(this.tileY + 1)) * tileDegrees));
double lngMin = (((double)this.tileX * tileDegrees) - 180.0);
double lngMax = ((((double)(this.tileX + 1)) * tileDegrees) - 180.0);
double tileDegreesX = lngMax - lngMin;
double tileDegreesY = latMax - latMin;
TopLeft = (Vector3d)GeoTo3d(latMin, lngMin, false);
BottomRight = (Vector3d)GeoTo3d(latMax, lngMax, false);
TopRight = (Vector3d)GeoTo3d(latMin, lngMax, false);
BottomLeft = (Vector3d)GeoTo3d(latMax, lngMin, false);
// Create a vertex buffer
PositionTexture[] verts = new PositionTexture[(subDivisionLevel + 1) * (subDivisionLevel + 1)]; // Lock the buffer (which will return our structs)
int x, y;
double textureStep = 1.0f / subDivisionLevel;
for (y = 0; y <= subDivisionLevel; y++)
{
if (y != subDivisionLevel)
{
lat = latMin + (textureStep * tileDegreesY * y);
}
else
{
lat = latMax;
}
for (x = 0; x <= subDivisionLevel; x++)
{
if (x != subDivisionLevel)
{
lng = lngMin + (textureStep * tileDegreesX * x);
}
else
{
lng = lngMax;
}
index = y * (subDivisionLevel + 1) + x;
verts[index] = PositionTexture.CreatePos(GeoTo3d(lat, lng, false), x * textureStep, y * textureStep);
}
}
TriangleCount = (subDivisionLevel) * (subDivisionLevel) * 2;
int quarterDivisions = subDivisionLevel / 2;
int part = 0;
if (renderContext.gl == null)
{
for (int y2 = 0; y2 < 2; y2++)
{
for (int x2 = 0; x2 < 2; x2++)
{
index = 0;
for (int y1 = (quarterDivisions * y2); y1 < (quarterDivisions * (y2 + 1)); y1++)
{
for (int x1 = (quarterDivisions * x2); x1 < (quarterDivisions * (x2 + 1)); x1++)
{
//index = ((y1 * quarterDivisions * 6) + 6 * x1);
// First triangle in quad
PositionTexture p1;
PositionTexture p2;
PositionTexture p3;
p1 = verts[(y1 * (subDivisionLevel + 1) + x1)];
p2 = verts[((y1 + 1) * (subDivisionLevel + 1) + x1)];
p3 = verts[(y1 * (subDivisionLevel + 1) + (x1 + 1))];
RenderTriangleLists[part].Add(RenderTriangle.Create(p1, p3, p2, texture, Level));
// Second triangle in quad
p1 = verts[(y1 * (subDivisionLevel + 1) + (x1 + 1))];
p2 = verts[((y1 + 1) * (subDivisionLevel + 1) + x1)];
p3 = verts[((y1 + 1) * (subDivisionLevel + 1) + (x1 + 1))];
RenderTriangleLists[part].Add(RenderTriangle.Create(p1, p3, p2, texture, Level));
}
}
part++;
}
}
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(verts.Length * 5);
float[] buffer = (float[])(object)f32array;
index = 0;
foreach (PositionTexture pt in verts)
{
index = AddVertex(buffer, index, pt);
}
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
for (int y2 = 0; y2 < 2; y2++)
{
for (int x2 = 0; x2 < 2; x2++)
{
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
index = 0;
for (int y1 = (quarterDivisions * y2); y1 < (quarterDivisions * (y2 + 1)); y1++)
{
for (int x1 = (quarterDivisions * x2); x1 < (quarterDivisions * (x2 + 1)); x1++)
{
// First triangle in quad
indexArray[index++] = (UInt16)((y1 * (subDivisionLevel + 1) + x1));
indexArray[index++] = (UInt16)(((y1 + 1) * (subDivisionLevel + 1) + x1));
indexArray[index++] = (UInt16)((y1 * (subDivisionLevel + 1) + (x1 + 1)));
// Second triangle in quad
indexArray[index++] = (UInt16)((y1 * (subDivisionLevel + 1) + (x1 + 1)));
indexArray[index++] = (UInt16)(((y1 + 1) * (subDivisionLevel + 1) + x1));
indexArray[index++] = (UInt16)(((y1 + 1) * (subDivisionLevel + 1) + (x1 + 1)));
}
}
IndexBuffers[part] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[part]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
part++;
}
}
}
}
catch
{
}
return(true);
}
public override bool CreateGeometry(RenderContext renderContext)
{
if (GeometryCreated)
{
return(true);
}
GeometryCreated = true;
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
LatLngEdges edges = GetLatLngEdges();
TopLeft = GeoTo3dTan(edges.latMin, edges.lngMin);
BottomRight = GeoTo3dTan(edges.latMax, edges.lngMax);
TopRight = GeoTo3dTan(edges.latMin, edges.lngMax);
BottomLeft = GeoTo3dTan(edges.latMax, edges.lngMin);
Vector3d center = Vector3d.MidPoint(TopLeft, BottomRight);
Vector3d leftCenter = Vector3d.MidPoint(TopLeft, BottomLeft);
Vector3d rightCenter = Vector3d.MidPoint(TopRight, BottomRight);
Vector3d topCenter = Vector3d.MidPoint(TopLeft, TopRight);
Vector3d bottomCenter = Vector3d.MidPoint(BottomLeft, BottomRight);
if (renderContext.gl == null)
{
RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePos(TopLeft, 0, 0), PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(topCenter, .5, 0), texture, Level));
RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, 0.5), PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(topCenter, .5, 0), texture, Level));
RenderTriangleLists[1].Add(RenderTriangle.Create(PositionTexture.CreatePos(topCenter, .5, 0), PositionTexture.CreatePos(rightCenter, 1, .5), PositionTexture.CreatePos(TopRight, 1, 0), texture, Level));
RenderTriangleLists[1].Add(RenderTriangle.Create(PositionTexture.CreatePos(topCenter, .5, 0), PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(rightCenter, 1, .5), texture, Level));
RenderTriangleLists[2].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(bottomCenter, .5, 1), PositionTexture.CreatePos(center, .5, .5), texture, Level));
RenderTriangleLists[2].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(BottomLeft, 0, 1), PositionTexture.CreatePos(bottomCenter, .5, 1), texture, Level));
RenderTriangleLists[3].Add(RenderTriangle.Create(PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(BottomRight, 1, 1), PositionTexture.CreatePos(rightCenter, 1, .5), texture, Level));
RenderTriangleLists[3].Add(RenderTriangle.Create(PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(bottomCenter, .5, 1), PositionTexture.CreatePos(BottomRight, 1, 1), texture, Level));
ReadyToRender = true;
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(9 * 5);
float[] buffer = (float[])(object)f32array;
int index = 0;
index = AddVertex(buffer, index, PositionTexture.CreatePos(bottomCenter, .5, 1)); //0
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomLeft, 0, 1)); //1
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomRight, 1, 1)); //2
index = AddVertex(buffer, index, PositionTexture.CreatePos(center, .5, .5)); //3
index = AddVertex(buffer, index, PositionTexture.CreatePos(leftCenter, 0, .5)); //4
index = AddVertex(buffer, index, PositionTexture.CreatePos(rightCenter, 1, .5)); //5
index = AddVertex(buffer, index, PositionTexture.CreatePos(topCenter, .5, 0)); //6
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopLeft, 0, 0)); //7
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopRight, 1, 0)); //8
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
// process index buffers
for (int i = 0; i < 4; i++)
{
index = 0;
TriangleCount = 2;
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
switch (i)
{
case 0:
indexArray[index++] = 7;
indexArray[index++] = 4;
indexArray[index++] = 6;
indexArray[index++] = 4;
indexArray[index++] = 3;
indexArray[index++] = 6;
break;
case 1:
indexArray[index++] = 6;
indexArray[index++] = 5;
indexArray[index++] = 8;
indexArray[index++] = 6;
indexArray[index++] = 3;
indexArray[index++] = 5;
break;
case 2:
indexArray[index++] = 4;
indexArray[index++] = 0;
indexArray[index++] = 3;
indexArray[index++] = 4;
indexArray[index++] = 1;
indexArray[index++] = 0;
break;
case 3:
indexArray[index++] = 3;
indexArray[index++] = 2;
indexArray[index++] = 5;
indexArray[index++] = 3;
indexArray[index++] = 0;
indexArray[index++] = 2;
break;
}
IndexBuffers[i] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[i]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
}
}
return(true);
}
public override bool CreateGeometry(RenderContext renderContext)
{
base.CreateGeometry(renderContext);
if (GeometryCreated)
{
return(true);
}
GeometryCreated = true;
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
double tileDegrees = this.dataset.BaseTileDegrees / (Math.Pow(2, this.Level));
double latMin = (((double)this.dataset.BaseTileDegrees / 2.0 - (((double)this.tileY) * tileDegrees)) + this.dataset.OffsetY);
double latMax = (((double)this.dataset.BaseTileDegrees / 2.0 - (((double)(this.tileY + 1)) * tileDegrees)) + this.dataset.OffsetY);
double lngMin = ((((double)this.tileX * tileDegrees) - (double)this.dataset.BaseTileDegrees / dataset.WidthFactor) + this.dataset.OffsetX);
double lngMax = (((((double)(this.tileX + 1)) * tileDegrees) - (double)this.dataset.BaseTileDegrees / dataset.WidthFactor) + this.dataset.OffsetX);
double tileDegreesX = lngMax - lngMin;
double tileDegreesY = latMax - latMin;
TopLeft = GeoTo3dTan(latMin, lngMin);
BottomRight = GeoTo3dTan(latMax, lngMax);
TopRight = GeoTo3dTan(latMin, lngMax);
BottomLeft = GeoTo3dTan(latMax, lngMin);
double latCenter = (latMin + latMax) / 2.0;
double lngCenter = (lngMin + lngMax) / 2.0;
Vector3d center = Vector3d.MidPoint(TopLeft, BottomRight);
Vector3d leftCenter = Vector3d.MidPoint(TopLeft, BottomLeft);
Vector3d rightCenter = Vector3d.MidPoint(TopRight, BottomRight);
Vector3d topCenter = Vector3d.MidPoint(TopLeft, TopRight);
Vector3d bottomCenter = Vector3d.MidPoint(BottomLeft, BottomRight);
if (renderContext.gl == null)
{
RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePos(TopLeft, 0, 0), PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(topCenter, .5, 0), texture, Level));
RenderTriangleLists[0].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, 0.5), PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(topCenter, .5, 0), texture, Level));
RenderTriangleLists[1].Add(RenderTriangle.Create(PositionTexture.CreatePos(topCenter, .5, 0), PositionTexture.CreatePos(rightCenter, 1, .5), PositionTexture.CreatePos(TopRight, 1, 0), texture, Level));
RenderTriangleLists[1].Add(RenderTriangle.Create(PositionTexture.CreatePos(topCenter, .5, 0), PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(rightCenter, 1, .5), texture, Level));
RenderTriangleLists[2].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(bottomCenter, .5, 1), PositionTexture.CreatePos(center, .5, .5), texture, Level));
RenderTriangleLists[2].Add(RenderTriangle.Create(PositionTexture.CreatePos(leftCenter, 0, .5), PositionTexture.CreatePos(BottomLeft, 0, 1), PositionTexture.CreatePos(bottomCenter, .5, 1), texture, Level));
RenderTriangleLists[3].Add(RenderTriangle.Create(PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(BottomRight, 1, 1), PositionTexture.CreatePos(rightCenter, 1, .5), texture, Level));
RenderTriangleLists[3].Add(RenderTriangle.Create(PositionTexture.CreatePos(center, .5, .5), PositionTexture.CreatePos(bottomCenter, .5, 1), PositionTexture.CreatePos(BottomRight, 1, 1), texture, Level));
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(9 * 5);
float[] buffer = (float[])(object)f32array;
int index = 0;
index = AddVertex(buffer, index, PositionTexture.CreatePos(bottomCenter, .5, 1)); //0
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomLeft, 0, 1)); //1
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomRight, 1, 1)); //2
index = AddVertex(buffer, index, PositionTexture.CreatePos(center, .5, .5)); //3
index = AddVertex(buffer, index, PositionTexture.CreatePos(leftCenter, 0, .5)); //4
index = AddVertex(buffer, index, PositionTexture.CreatePos(rightCenter, 1, .5)); //5
index = AddVertex(buffer, index, PositionTexture.CreatePos(topCenter, .5, 0)); //6
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopLeft, 0, 0)); //7
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopRight, 1, 0)); //8
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
// process index buffers
for (int i = 0; i < 4; i++)
{
index = 0;
TriangleCount = 2;
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
switch (i)
{
case 0:
indexArray[index++] = 7;
indexArray[index++] = 4;
indexArray[index++] = 6;
indexArray[index++] = 4;
indexArray[index++] = 3;
indexArray[index++] = 6;
break;
case 1:
indexArray[index++] = 6;
indexArray[index++] = 5;
indexArray[index++] = 8;
indexArray[index++] = 6;
indexArray[index++] = 3;
indexArray[index++] = 5;
break;
case 2:
indexArray[index++] = 4;
indexArray[index++] = 0;
indexArray[index++] = 3;
indexArray[index++] = 4;
indexArray[index++] = 1;
indexArray[index++] = 0;
break;
case 3:
indexArray[index++] = 3;
indexArray[index++] = 2;
indexArray[index++] = 5;
indexArray[index++] = 3;
indexArray[index++] = 0;
indexArray[index++] = 2;
break;
}
IndexBuffers[i] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[i]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
}
}
return(true);
}
