ClemensFischer/XAML-Map-Control
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Update MapProjection and ViewTransform

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ClemensFischer 2026-01-06 11:56:28 +01:00
parent 2a9e112a20
commit eee71e9190
12 changed files with 34 additions and 38 deletions
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35
MapControl/Shared/ViewTransform.cs
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@ -58,20 +58,14 @@ namespace MapControl
}
/// <summary>
/// Gets a transform Matrix from meters to view coordinates for a relative map scale.
/// </summary>
public Matrix GetMapTransform(Point relativeScale)
{
var transform = new Matrix(Scale * relativeScale.X, 0d, 0d, Scale * relativeScale.Y, 0d, 0d);
transform.Rotate(Rotation);
return transform;
}
/// <summary>
/// Gets the transform Matrix for the RenderTranform of a MapTileLayer.
/// Gets the transform Matrix for the RenderTranform of a MapTileLayer or WmtsTileMatrixLayer.
/// </summary>
public Matrix GetTileLayerTransform(double tileMatrixScale, Point tileMatrixTopLeft, Point tileMatrixOrigin)
{
var scale = Scale / tileMatrixScale;
var transform = new Matrix(scale, 0d, 0d, scale, 0d, 0d);
transform.Rotate(Rotation);
// Tile matrix origin in map coordinates.
//
var mapOrigin = new Point(
@ -81,11 +75,8 @@ namespace MapControl
// Tile matrix origin in view coordinates.
//
var viewOrigin = MapToViewMatrix.Transform(mapOrigin);
var scale = Scale / tileMatrixScale;
var transform = new Matrix(scale, 0d, 0d, scale, 0d, 0d);
transform.Rotate(Rotation);
transform.Translate(viewOrigin.X, viewOrigin.Y);
return transform;
}
@ -94,19 +85,19 @@ namespace MapControl
/// </summary>
public Rect GetTileMatrixBounds(double tileMatrixScale, Point tileMatrixTopLeft, double viewWidth, double viewHeight)
{
var scale = tileMatrixScale / Scale;
var transform = new Matrix(scale, 0d, 0d, scale, 0d, 0d);
transform.Rotate(-Rotation);
// View origin in map coordinates.
//
var origin = ViewToMapMatrix.Transform(new Point());
// Translation from origin to tile matrix origin in pixels.
//
var originOffsetX = tileMatrixScale * (origin.X - tileMatrixTopLeft.X);
var originOffsetY = tileMatrixScale * (tileMatrixTopLeft.Y - origin.Y);
var scale = tileMatrixScale / Scale;
var transform = new Matrix(scale, 0d, 0d, scale, 0d, 0d);
transform.Rotate(-Rotation);
transform.Translate(originOffsetX, originOffsetY);
transform.Translate(
tileMatrixScale * (origin.X - tileMatrixTopLeft.X),
tileMatrixScale * (tileMatrixTopLeft.Y - origin.Y));
// Transform view bounds to tile pixel bounds.
//