ClemensFischer/XAML-Map-Control
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Moved Matrix creation to ViewTransform

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ClemensFischer 2024-05-22 09:42:21 +02:00
parent a1b8ed1ce8
commit 9cb4a9be7e
7 changed files with 138 additions and 103 deletions
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72
MapControl/Shared/ViewTransform.cs
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@ -54,21 +54,10 @@ namespace MapControl
public Matrix ViewToMapMatrix { get; private set; }
/// <summary>
/// Transforms a Point from projected map coordinates to view coordinates.
/// Initializes a ViewTransform from a map center point in projected coordinates,
/// a view conter point, a scaling factor from projected coordinates to view coordinates
/// and a rotation angle in degrees.
/// </summary>
public Point MapToView(Point point)
{
return MapToViewMatrix.Transform(point);
}
/// <summary>
/// Transforms a Point from view coordinates to projected map coordinates.
/// </summary>
public Point ViewToMap(Point point)
{
return ViewToMapMatrix.Transform(point);
}
public void SetTransform(Point mapCenter, Point viewCenter, double scale, double rotation)
{
Scale = scale;
@ -85,6 +74,46 @@ namespace MapControl
ViewToMapMatrix = transform;
}
/// <summary>
/// Transforms a Point from projected map coordinates to view coordinates.
/// </summary>
public Point MapToView(Point point)
{
return MapToViewMatrix.Transform(point);
}
/// <summary>
/// Transforms a Point from view coordinates to projected map coordinates.
/// </summary>
public Point ViewToMap(Point point)
{
return ViewToMapMatrix.Transform(point);
}
/// <summary>
/// Gets scaling factors from meters to view coordinates for a relative map scale.
/// </summary>
public Point GetMapScale(Point relativeScale)
{
return new Point(Scale * relativeScale.X, Scale * relativeScale.Y);
}
/// <summary>
/// Gets a transform Matrix from meters to view coordinates for a relative map scale.
/// </summary>
public Matrix GetMapTransform(Point relativeScale)
{
var scale = GetMapScale(relativeScale);
var transform = new Matrix(scale.X, 0d, 0d, scale.Y, 0d, 0d);
transform.Rotate(Rotation);
return transform;
}
/// <summary>
/// Gets the transform Matrix for the RenderTranform of a MapTileLayer.
/// </summary>
public Matrix GetTileLayerTransform(double tileMatrixScale, Point tileMatrixTopLeft, Point tileMatrixOrigin)
{
// Tile matrix origin in map coordinates.
@ -106,6 +135,9 @@ namespace MapControl
return transform;
}
/// <summary>
/// Gets the index bounds of a tile matrix.
/// </summary>
public Rect GetTileMatrixBounds(double tileMatrixScale, Point tileMatrixTopLeft, Size viewSize)
{
// View origin in map coordinates.
@ -128,5 +160,17 @@ namespace MapControl
return new MatrixTransform { Matrix = transform }
.TransformBounds(new Rect(0d, 0d, viewSize.Width, viewSize.Height));
}
internal static Matrix CreateTransformMatrix(
double translation1X, double translation1Y,
double rotation,
double translation2X, double translation2Y)
{
var transform = new Matrix(1d, 0d, 0d, 1d, translation1X, translation1Y);
transform.Rotate(rotation);
transform.Translate(translation2X, translation2Y);
return transform;
}
}
}