Struct Viewport

Implements
Inherited Members
Namespace: Mapsui
Assembly: Mapsui.dll
Syntax
public record struct Viewport : IEquatable<Viewport>

Constructors

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Viewport(double, double, double, double, double, double)

Declaration
public Viewport(double centerX, double centerY, double resolution, double rotation, double width, double height)
Parameters
Type Name Description
double centerX
double centerY
double resolution
double rotation
double width
double height

Properties

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CenterX

The X coordinate of the center of the viewport in world coordinates

Declaration
public double CenterX { readonly get; init; }
Property Value
Type Description
double
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CenterY

The Y coordinate of the center of the viewport in world coordinates

Declaration
public double CenterY { readonly get; init; }
Property Value
Type Description
double
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Height

Height of viewport in screen pixels

Declaration
public double Height { readonly get; init; }
Property Value
Type Description
double
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Resolution

Resolution of the viewport in units per pixel

Declaration
public double Resolution { readonly get; init; }
Property Value
Type Description
double
Remarks

In Mapsui, the resolution corresponds to what is often referred to as the zoom level. Because Mapsui is projection independent, there aren't any zoom levels as other map libraries have. If your map has EPSG:3857 as projection and you want to calculate the zoom, you should use the following equation

var zoom = (float)Math.Log(78271.51696401953125 / resolution, 2);
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Rotation

Viewport rotation from True North (clockwise degrees)

Declaration
public double Rotation { readonly get; init; }
Property Value
Type Description
double
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Width

Width of viewport in screen pixels

Declaration
public double Width { readonly get; init; }
Property Value
Type Description
double

Operators

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operator +(Viewport, Viewport)

Declaration
public static Viewport operator +(Viewport a, Viewport b)
Parameters
Type Name Description
Viewport a
Viewport b
Returns
Type Description
Viewport
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operator /(Viewport, double)

Declaration
public static Viewport operator /(Viewport v, double d)
Parameters
Type Name Description
Viewport v
double d
Returns
Type Description
Viewport
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operator *(Viewport, double)

Declaration
public static Viewport operator *(Viewport v, double m)
Parameters
Type Name Description
Viewport v
double m
Returns
Type Description
Viewport
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operator -(Viewport, Viewport)

Declaration
public static Viewport operator -(Viewport a, Viewport b)
Parameters
Type Name Description
Viewport a
Viewport b
Returns
Type Description
Viewport

Implements

Extension Methods