private void DrawView()
{
if (!(DrawView_Enabled && IsGLInitialized))
{
return;
}
if (GraphicsContext.CurrentContext != OpenGLControl.Context)
{
OpenGLControl.MakeCurrent();
}
GL.Clear(ClearBufferMask.ColorBufferBit);
var map = MainMap;
if (map == null)
{
GL.Flush();
OpenGLControl.SwapBuffers();
Refresh();
return;
}
var xyInt = new XYInt();
var unrotatedPos = new XYDouble();
var texCoord0 = new XYDouble();
var texCoord1 = new XYDouble();
var texCoord2 = new XYDouble();
var texCoord3 = new XYDouble();
GL.MatrixMode(MatrixMode.Projection);
var temp_mat = Matrix4.CreateOrthographicOffCenter(0.0F, GLSize.X, GLSize.Y, 0.0F, -1.0F, 1.0F);
GL.LoadMatrix(ref temp_mat);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
if (map.Tileset != null)
{
TileUtil.GetTileRotatedTexCoords(App.TextureOrientation, ref texCoord0, ref texCoord1, ref texCoord2, ref texCoord3);
GL.Enable(EnableCap.Texture2D);
GL.Color4(0.0F, 0.0F, 0.0F, 1.0F);
var x = 0;
var y = 0;
var num = 0;
var a = 0;
for (y = 0; y <= TextureCount.Y - 1; y++)
{
for (x = 0; x <= TextureCount.X - 1; x++)
{
num = (TextureYOffset + y) * TextureCount.X + x;
if (num >= map.Tileset.TileCount)
{
goto EndOfTextures1;
}
a = map.Tileset.Tiles[num].GlTextureNum;
GL.BindTexture(TextureTarget.Texture2D, a);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Decal);
GL.Begin(BeginMode.Quads);
GL.TexCoord2(texCoord0.X, texCoord0.Y);
GL.Vertex2(x * 64, y * 64); // Top Left
GL.TexCoord2(texCoord1.X, texCoord1.Y);
GL.Vertex2(x * 64 + 64, y * 64); // Bottom Left
GL.TexCoord2(texCoord3.X, texCoord3.Y);
GL.Vertex2(x * 64 + 64, y * 64 + 64); // Bottom right
GL.TexCoord2(texCoord2.X, texCoord2.Y);
GL.Vertex2(x * 64, y * 64 + 64); // Top right
GL.End();
}
}
EndOfTextures1:
GL.Disable(EnableCap.Texture2D);
if (DisplayTileTypes)
{
GL.Begin(BeginMode.Quads);
for (y = 0; y <= TextureCount.Y - 1; y++)
{
for (x = 0; x <= TextureCount.X - 1; x++)
{
num = (TextureYOffset + y) * TextureCount.X + x;
if (num >= map.Tileset.TileCount)
{
goto EndOfTextures2;
}
a = map.TileTypeNum[num];
GL.Color3(App.TileTypes[a].DisplayColour.Red, App.TileTypes[a].DisplayColour.Green, App.TileTypes[a].DisplayColour.Blue);
GL.Vertex2(x * 64 + 24, y * 64 + 24);
GL.Vertex2(x * 64 + 24, y * 64 + 40);
GL.Vertex2(x * 64 + 40, y * 64 + 40);
GL.Vertex2(x * 64 + 40, y * 64 + 24);
}
}
EndOfTextures2:
GL.End();
}
if (App.DisplayTileOrientation)
{
GL.Disable(EnableCap.CullFace);
unrotatedPos.X = 0.25F;
unrotatedPos.Y = 0.25F;
var vertex0 = TileUtil.GetTileRotatedPos_sng(App.TextureOrientation, unrotatedPos);
unrotatedPos.X = 0.5F;
unrotatedPos.Y = 0.25F;
var vertex1 = TileUtil.GetTileRotatedPos_sng(App.TextureOrientation, unrotatedPos);
unrotatedPos.X = 0.5F;
unrotatedPos.Y = 0.5F;
var vertex2 = TileUtil.GetTileRotatedPos_sng(App.TextureOrientation, unrotatedPos);
GL.Begin(BeginMode.Triangles);
GL.Color3(1.0F, 1.0F, 0.0F);
for (y = 0; y <= TextureCount.Y - 1; y++)
{
for (x = 0; x <= TextureCount.X - 1; x++)
{
num = (TextureYOffset + y) * TextureCount.X + x;
if (num >= map.Tileset.TileCount)
{
goto EndOfTextures3;
}
GL.Vertex2(x * 64 + vertex0.X * 64, y * 64 + vertex0.Y * 64);
GL.Vertex2(x * 64 + vertex2.X * 64, y * 64 + vertex2.Y * 64);
GL.Vertex2(x * 64 + vertex1.X * 64, y * 64 + vertex1.Y * 64);
}
}
EndOfTextures3:
GL.End();
GL.Enable(EnableCap.CullFace);
}
if (DisplayTileNumbers && App.UnitLabelFont != null) //TextureViewFont IsNot Nothing Then
{
GL.Enable(EnableCap.Texture2D);
for (y = 0; y <= TextureCount.Y - 1; y++)
{
for (x = 0; x <= TextureCount.X - 1; x++)
{
num = (TextureYOffset + y) * TextureCount.X + x;
if (num >= map.Tileset.TileCount)
{
goto EndOfTextures4;
}
clsTextLabel textLabel = new clsTextLabel();
textLabel.Text = num.ToStringInvariant();
textLabel.SizeY = 24.0F;
textLabel.Colour.Red = 1.0F;
textLabel.Colour.Green = 1.0F;
textLabel.Colour.Blue = 0.0F;
textLabel.Colour.Alpha = 1.0F;
textLabel.Pos.X = x * 64;
textLabel.Pos.Y = y * 64;
textLabel.TextFont = App.UnitLabelFont; //TextureViewFont
textLabel.Draw();
}
}
EndOfTextures4:
GL.Disable(EnableCap.Texture2D);
}
if (App.SelectedTextureNum >= 0 & TextureCount.X > 0)
{
a = App.SelectedTextureNum - TextureYOffset * TextureCount.X;
xyInt.X = a - a / TextureCount.X * TextureCount.X;
xyInt.Y = a / TextureCount.X;
GL.Begin(BeginMode.LineLoop);
GL.Color3(1.0F, 1.0F, 0.0F);
GL.Vertex2(xyInt.X * 64, xyInt.Y * 64);
GL.Vertex2(xyInt.X * 64, xyInt.Y * 64.0D + 64);
GL.Vertex2(xyInt.X * 64 + 64, xyInt.Y * 64 + 64);
GL.Vertex2(xyInt.X * 64 + 64, xyInt.Y * 64);
GL.End();
}
}
GL.Flush();
OpenGLControl.SwapBuffers();
Refresh();
}
public override void Perform()
{
var terrain = Map.Terrain;
var tileset = Map.Tileset;
var tileTerrainHeight = new double[5];
var vertices = new XYZDouble[5]; //4 corners + center
var normals = new XYZDouble[5];
var texCoords = new XYDouble[5];
//Texture binding code copied from clsDrawTileOld
if (terrain.Tiles[TileX, TileY].Texture.TextureNum < 0)
{
GL.BindTexture(TextureTarget.Texture2D, App.GLTexture_NoTile);
}
else if (tileset == null)
{
GL.BindTexture(TextureTarget.Texture2D, App.GLTexture_OverflowTile);
}
else if (terrain.Tiles[TileX, TileY].Texture.TextureNum < tileset.TileCount)
{
var viewGlTextureNum = tileset.Tiles[terrain.Tiles[TileX, TileY].Texture.TextureNum].GlTextureNum;
if (viewGlTextureNum == 0)
{
GL.BindTexture(TextureTarget.Texture2D, App.GLTexture_OverflowTile);
}
else
{
GL.BindTexture(TextureTarget.Texture2D, viewGlTextureNum);
}
}
else
{
GL.BindTexture(TextureTarget.Texture2D, App.GLTexture_OverflowTile);
}
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
//Vertex order:
//0 1
// 4
//2 3
tileTerrainHeight[0] = terrain.Vertices[TileX, TileY].Height;
tileTerrainHeight[1] = terrain.Vertices[TileX + 1, TileY].Height;
tileTerrainHeight[2] = terrain.Vertices[TileX, TileY + 1].Height;
tileTerrainHeight[3] = terrain.Vertices[TileX + 1, TileY + 1].Height;
tileTerrainHeight[4] = (tileTerrainHeight[0] + tileTerrainHeight[1] + tileTerrainHeight[2] + tileTerrainHeight[3]) / 4;
//middle height is average of the corners
TileUtil.GetTileRotatedTexCoords(terrain.Tiles[TileX, TileY].Texture.Orientation, ref texCoords[0], ref texCoords[1], ref texCoords[2], ref texCoords[3]);
//cowboy: don't forget the middle texture coordinate regardless of rotation.
texCoords[4].X = 0.5f;
texCoords[4].Y = 0.5f;
vertices[0].X = TileX * Constants.TerrainGridSpacing;
vertices[0].Y = (float)(tileTerrainHeight[0] * Map.HeightMultiplier);
vertices[0].Z = -TileY * Constants.TerrainGridSpacing;
vertices[1].X = (TileX + 1) * Constants.TerrainGridSpacing;
vertices[1].Y = (float)(tileTerrainHeight[1] * Map.HeightMultiplier);
vertices[1].Z = -TileY * Constants.TerrainGridSpacing;
vertices[2].X = TileX * Constants.TerrainGridSpacing;
vertices[2].Y = (float)(tileTerrainHeight[2] * Map.HeightMultiplier);
vertices[2].Z = -(TileY + 1) * Constants.TerrainGridSpacing;
vertices[3].X = (TileX + 1) * Constants.TerrainGridSpacing;
vertices[3].Y = (float)(tileTerrainHeight[3] * Map.HeightMultiplier);
vertices[3].Z = -(TileY + 1) * Constants.TerrainGridSpacing;
vertices[4].X = (TileX + 0.5f) * Constants.TerrainGridSpacing;
vertices[4].Y = (float)(tileTerrainHeight[4] * Map.HeightMultiplier);
vertices[4].Z = -(TileY + 0.5f) * Constants.TerrainGridSpacing;
normals[0] = Map.TerrainVertexNormalCalc(TileX, TileY);
normals[1] = Map.TerrainVertexNormalCalc(TileX + 1, TileY);
normals[2] = Map.TerrainVertexNormalCalc(TileX, TileY + 1);
normals[3] = Map.TerrainVertexNormalCalc(TileX + 1, TileY + 1);
normals[4] = (normals[0] + normals[1] + normals[2] + normals[3]) / 4; //Linearly interpolate from corner vertices
normals[4] /= normals[4].GetMagnitude(); //normalize vector length
GL.Begin(BeginMode.Triangles);
int[] indices = { 1, 0, 4, 3, 1, 4, 2, 3, 4, 0, 2, 4 };
foreach (var i in indices)
{
GL.Normal3(normals[i].X, normals[i].Y, -normals[i].Z);
GL.TexCoord2(texCoords[i].X, texCoords[i].Y);
GL.Vertex3(vertices[i].X, vertices[i].Y, -vertices[i].Z);
}
GL.End();
}