ClemensFischer/XAML-Map-Control
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Use Matrix for projection relative scale

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ClemensFischer 2026-01-20 09:48:16 +01:00
parent 2c9e478095
commit ab155a26e7
21 changed files with 93 additions and 104 deletions
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25
MapControl/Shared/Matrix.cs
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@ -50,6 +50,19 @@ namespace MapControl
OffsetY += y;
}
public void Scale(double scaleX, double scaleY)
{
// equivalent to Multiply(new Matrix(scaleX, 0, 0, scaleY, 0d, 0d));
//
SetMatrix(
M11 * scaleX,
M12 * scaleY,
M21 * scaleX,
M22 * scaleY,
OffsetX * scaleX,
OffsetY * scaleY);
}
public void Rotate(double angle)
{
if (angle != 0d)
@ -60,12 +73,12 @@ namespace MapControl
// equivalent to Multiply(new Matrix(cos, sin, -sin, cos, 0d, 0d));
//
SetMatrix(
cos * M11 - sin * M12,
sin * M11 + cos * M12,
cos * M21 - sin * M22,
sin * M21 + cos * M22,
cos * OffsetX - sin * OffsetY,
sin * OffsetX + cos * OffsetY);
M11 * cos - M12 * sin,
M11 * sin + M12 * cos,
M21 * cos - M22 * sin,
M21 * sin + M22 * cos,
OffsetX * cos - OffsetY * sin,
OffsetX * sin + OffsetY * cos);
}
}