private string LoadSVG(string filePath)
{
XmlTextReader reader = null;
string debugMsg = "";
Point min = new System.Drawing.Point(int.MaxValue, int.MaxValue);
Point max = new System.Drawing.Point(int.MinValue, int.MinValue);
// Load the reader with the data file and ignore all white space nodes.
reader = new XmlTextReader(filePath);
reader.WhitespaceHandling = WhitespaceHandling.None;
// Parse the file.
svgList = new ArrayList();
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
switch (reader.Name)
{
case "rect":
case "circle":
case "line":
case "polyline":
case "polygon":
SvgShape s = new SvgShape(reader);
svgList.Add(s);
min.X = Math.Min(min.X, s.min.X);
min.Y = Math.Min(min.Y, s.min.Y);
max.X = Math.Max(max.X, s.max.X);
max.Y = Math.Max(max.Y, s.max.Y);
debugMsg += s.debugMsg + " ";
break;
}
break;
}
}
reader.Close();
// compute size and offset
int maxDimension = Math.Max(max.X - min.X, max.Y - min.Y);
spriteSize = new Rectangle(0, 0, maxDimension, maxDimension);
spriteOffset = new Point((max.X - min.X) / 2 + min.X, (max.Y - min.Y) / 2 + min.Y);
return(debugMsg);
}
/// <summary>
/// This is where we do our rendering
/// Called from UI thread = UI code safe in this function
/// </summary>
public override void Render(DrawArgs drawArgs)
{
if (!isInitialized)
{
return;
}
// Camera shortcut ;)
CameraBase camera = drawArgs.WorldCamera;
Device device = drawArgs.device;
// Save fog status
bool origFog = device.RenderState.FogEnable;
device.RenderState.FogEnable = false;
if (drawArgs.device.RenderState.Lighting)
{
drawArgs.device.RenderState.Lighting = false;
drawArgs.device.RenderState.Ambient = World.Settings.StandardAmbientColor;
}
// Save original projection and change it to ortho
// Note: using pixels as units produce a 1:1 projection of textures
Matrix origProjection = device.Transform.Projection;
// Save original View and change it to place compass
Matrix origView = device.Transform.View;
Matrix origWorld = device.Transform.World;
device.Transform.Projection = Matrix.OrthoRH((float)device.Viewport.Width, (float)device.Viewport.Height, -(float)4e3, (float)4e3);
// Note: the compass is centered on origin, the camera view moves.
float offsetY = 0;
float offsetZ = 0;
switch (spritePos)
{
case "Bottom-Left":
// lower left corner
offsetY = (float)device.Viewport.Width / 2 - spriteSize.Width / 2 - 10;
offsetZ = (float)device.Viewport.Height / 2 - spriteSize.Height / 2 - 10;
break;
case "Bottom-Center":
// bottom centered
offsetY = 0;
offsetZ = (float)device.Viewport.Height / 2 - spriteSize.Height / 2 - 10;
break;
case "Screen-Center":
// plain centered
offsetY = 0;
offsetZ = 0;
break;
case "Top-Right":
// upper right corner
offsetY = -((float)device.Viewport.Width / 2 - spriteSize.Width / 2 - 10);
offsetZ = -((float)device.Viewport.Height / 2 - spriteSize.Height / 2 - 10);
if (World.Settings.ShowToolbar)
{
offsetZ += 50;
}
if (World.Settings.ShowPosition)
{
offsetZ += 140;
}
break;
case "Top-Center":
// up center
offsetY = 0;
offsetZ = -((float)device.Viewport.Height / 2 - spriteSize.Height / 2 - 10);
if (World.Settings.ShowToolbar)
{
offsetZ += 50;
}
break;
case "Top-Left":
// upper left corner
offsetY = ((float)device.Viewport.Width / 2 - spriteSize.Width / 2 - 6);
offsetZ = -((float)device.Viewport.Height / 2 - spriteSize.Height / 2 - 4);
if (World.Settings.ShowToolbar)
{
offsetZ += 40;
}
break;
}
//offsetY += spriteOffset.X;
//offsetZ += -spriteOffset.Y;
device.Transform.View = Matrix.LookAtRH(
new Vector3((float)1e3, offsetY, offsetZ), // Cam pos
new Vector3(0, offsetY, offsetZ), // Cam target
new Vector3(0, 0, 1)); // Up vector
// Offset, rotate and tilt
Matrix trans = Matrix.Translation(0, -(float)spriteOffset.X, (float)spriteOffset.Y);
trans *= Matrix.RotationX((float)camera.Heading.Radians);
if (tilt)
{
trans *= Matrix.RotationY((float)camera.Tilt.Radians);
}
device.Transform.World = trans;
// Render Compass here
if (svgList != null) // ** SVG
{
for (int i = 0; i < svgList.Count; i++)
{
SvgShape s = (SvgShape)svgList[i];
s.Render(drawArgs);
}
}
if (texture != null) // ** Bitmap
{
// Calculate the triangle vertices (triangle 1)
// Note: use pixels as unit for 1:1 ortho projection
float y = (float)spriteSize.Width / 2;
float z = (float)spriteSize.Height / 2;
borderVertices[0].X = 0;
borderVertices[0].Y = -y;
borderVertices[0].Z = -z;
borderVertices[0].Tu = 0;
borderVertices[0].Tv = 1;
borderVertices[1].X = 0;
borderVertices[1].Y = y;
borderVertices[1].Z = -z;
borderVertices[1].Tu = 1;
borderVertices[1].Tv = 1;
borderVertices[2].X = 0;
borderVertices[2].Y = -y;
borderVertices[2].Z = z;
borderVertices[2].Tu = 0;
borderVertices[2].Tv = 0;
// Triangle 2 (uses previous 2 vertices as first 2 points (TriangleStrip))
borderVertices[3].X = 0;
borderVertices[3].Y = y;
borderVertices[3].Z = z;
borderVertices[3].Tu = 1;
borderVertices[3].Tv = 0;
// Draw our 2 triangles
device.VertexFormat = CustomVertex.PositionTextured.Format;
device.SetTexture(0, texture);
device.TextureState[0].ColorOperation = TextureOperation.SelectArg1;
device.TextureState[0].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[0].AlphaOperation = TextureOperation.SelectArg1;
device.TextureState[0].AlphaArgument1 = TextureArgument.TextureColor;
device.DrawUserPrimitives(PrimitiveType.TriangleStrip, 2, borderVertices);
}
// Restore device states
device.Transform.World = origWorld;
device.Transform.Projection = origProjection;
device.Transform.View = origView;
device.RenderState.ZBufferEnable = true;
device.RenderState.FogEnable = origFog;
}
private string LoadSVG(string filePath)
{
XmlTextReader reader = null;
string debugMsg = "";
Point min = new System.Drawing.Point(int.MaxValue, int.MaxValue);
Point max = new System.Drawing.Point(int.MinValue, int.MinValue);
// Load the reader with the data file and ignore all white space nodes.
reader = new XmlTextReader(filePath);
reader.WhitespaceHandling = WhitespaceHandling.None;
// Parse the file.
svgList = new ArrayList();
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
switch (reader.Name)
{
case "rect":
case "circle":
case "line":
case "polyline":
case "polygon":
SvgShape s = new SvgShape(reader);
svgList.Add(s);
min.X = Math.Min(min.X, s.min.X);
min.Y = Math.Min(min.Y, s.min.Y);
max.X = Math.Max(max.X, s.max.X);
max.Y = Math.Max(max.Y, s.max.Y);
debugMsg += s.debugMsg + " ";
break;
}
break;
}
}
reader.Close();
// compute size and offset
int maxDimension = Math.Max(max.X - min.X, max.Y - min.Y);
spriteSize = new Rectangle(0, 0, maxDimension, maxDimension);
spriteOffset = new Point((max.X - min.X) / 2 + min.X, (max.Y - min.Y) / 2 + min.Y);
return debugMsg;
}
