DiagramViewportMath

Center

public static DiagramViewportState Center(Rect contentBounds, Size viewportSize, double scale)

result = DiagramViewportMath.Center(contentBounds, viewportSize, scale)

Centers content at the supplied scale.

contentBounds

Diagram-space content bounds.

viewportSize

Screen-space viewport size.

scale

Viewport scale.

Retorna: Centered viewport transform.

Fit

public static DiagramViewportState Fit(Rect contentBounds, Size viewportSize, double padding)

result = DiagramViewportMath.Fit(contentBounds, viewportSize, padding)

Fits content into a viewport while preserving its aspect ratio.

contentBounds

Diagram-space content bounds.

viewportSize

Screen-space viewport size.

padding

Screen-space padding.

Retorna: Fitted viewport transform.

FromSliderValue

public static double FromSliderValue(double sliderValue)

result = DiagramViewportMath.FromSliderValue(sliderValue)

Converts a base-2 slider value to a viewport scale.

sliderValue

Slider value.

Retorna: Viewport scale.

GetScrollRange

public static DiagramScrollRange GetScrollRange(double contentStart, double contentLength, double viewportLength)

result = DiagramViewportMath.GetScrollRange(contentStart, contentLength, viewportLength)

Says where a viewport stands along one axis of the document it shows.

contentStart

Screen-space start of the content along the axis.

contentLength

Screen-space length of the content along the axis.

viewportLength

Length of the viewport along the axis.

Retorna: What a scroll bar along that axis shows.

ToSliderValue

public static double ToSliderValue(double scale)

result = DiagramViewportMath.ToSliderValue(scale)

Converts a scale to the WPF-compatible base-2 slider value.

scale

Viewport scale.

Retorna: Slider value in the range -4 through 2.

MaximumScale

public const double MaximumScale

value = DiagramViewportMath.MaximumScale

Maximum supported diagram scale.

MinimumScale

public const double MinimumScale

value = DiagramViewportMath.MinimumScale

Minimum supported diagram scale.