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Fix WinUI/UWP Matrix

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This commit is contained in:
ClemensFischer 2022-12-03 20:55:17 +01:00
parent 448177418e
commit c404fd2a90
2 changed files with 16 additions and 2 deletions
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2
MapControl/Shared/ViewTransform.cs
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@ -72,7 +72,7 @@ namespace MapControl
public void SetTransform(Point mapCenter, Point viewCenter, double scale, double rotation)
{
Scale = scale;
Rotation = rotation;
Rotation = ((rotation % 360d) + 360d) % 360d;
var transform = new Matrix(Scale, 0d, 0d, -Scale, -Scale * mapCenter.X, Scale * mapCenter.Y);

16
MapControl/WinUI/Matrix.WinUI.cs
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@ -2,6 +2,7 @@
// © 2022 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using ABI.Microsoft.UI.Xaml.Media;
using System;
#if WINUI
using XamlMedia = Microsoft.UI.Xaml.Media;
@ -40,7 +41,7 @@ namespace MapControl
public Point Transform(Point p)
{
return new Point(M11 * p.X + M12 * p.Y + OffsetX, M21 * p.X + M22 * p.Y + OffsetY);
return new Point(M11 * p.X + M21 * p.Y + OffsetX, M12 * p.X + M22 * p.Y + OffsetY);
}
public void Translate(double x, double y)
@ -58,6 +59,8 @@ namespace MapControl
var cos = Math.Cos(angle);
var sin = Math.Sin(angle);
// Multiply(new Matrix(cos, sin, -sin, cos, 0d, 0d));
SetMatrix(
cos * M11 - sin * M12,
sin * M11 + cos * M12,
@ -83,6 +86,17 @@ namespace MapControl
invDet * (M12 * OffsetX - M11 * OffsetY));
}
public void Multiply(Matrix m)
{
SetMatrix(
M11 * m.M11 + M12 * m.M21,
M11 * m.M12 + M12 * m.M22,
M21 * m.M11 + M22 * m.M21,
M21 * m.M12 + M22 * m.M22,
OffsetX * m.M11 + OffsetY * m.M21 + m.OffsetX,
OffsetX * m.M12 + OffsetY * m.M22 + m.OffsetY);
}
private void SetMatrix(double m11, double m12, double m21, double m22, double offsetX, double offsetY)
{
M11 = m11;