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WindowPolygon

Script function

world.WindowPolygon

Read about scripting

Type

Method

Summary

Draws a polygon in a miniwindow

Prototype

long WindowPolygon(BSTR WindowName, BSTR Points, long PenColour, long PenStyle, long PenWidth, long BrushColour, long BrushStyle, BOOL Close, BOOL Winding);

View list of data type meanings

Description

This draws a polygon (series of straight lines) connecting the specified points, with the designated pen and filled with the designated brush.

Note that changes to miniwindows will not become visible until the output window is redrawn. This happens when new (visible) lines arrive from the MUD, or if you call WindowShow, or Redraw.

Parameters:

WindowName - the name of an existing miniwindow.

Points - a string consisting of pairs of numbers, one for each point, in the format x1,y1,x2,y2 ...

For example: "20,50,180,50" would specify two points, one at 20,50 and one at 180,50.

You must have at least 2 points (the start and end), which is 4 numbers. The number of numbers in the string must be even (divisible by two), as it takes a pair of numbers to specify one point.

PenColour - the RGB colour for this pen

PenStyle - what style of pen to use:

0 - solid (an unbroken pen)
1 - dash: -------
2 - dot: .......
3 - dashdot: _._._._
4 - dashdotdot: _.._.._
5 - null (no pen)
6 - insideframe - a solid pen, drawn inside the shape

Also you can add into the style:

0x0000 - round ends (0 = the default)
0x0100 - square ends (256)
0x0200 - flat ends (512)

0x0000 - round joins (0 = the default)
0x1000 - bevel joins (4096)
0x2000 - miter joins (8192)


PenWidth - the width of the pen in pixels. For styles 1 to 4 only a width of 1 is valid.

For a particular shape, specify style 5 (no pen) if you only want to fill the shape, and not stroke it as well.

BrushColour - the RGB colour for this brush

BrushStyle - what style of brush to use:

0: solid (filled with a solid colour)
1: null (not filled)
2: hatch: horizontal
3: hatch: vertical
4: hatch: forwards diagonal
5: hatch: backwards diagonal
6: hatch: cross
7: hatch: diagonal cross
8: fine pattern
9: medium pattern
10: coarse pattern
11: waves - horizontal
12: waves - vertical

BrushColour, Brushstyle - the brush colour and style as described at the top of this page.

Close - if true, the polygon is closed by connecting the last point to the first one, if necessary

Winding - if true the polygon is filled using the "winding" algorithm, if false it is filled using the "alternate" algorithm.

When the polygon-filling mode is "alternate", the system fills the area between odd-numbered and even-numbered polygon sides on each scan line. That is, the system fills the area between the first and second side, between the third and fourth side, and so on. This mode is the default.

When the polygon-filling mode is "winding", the system uses the direction in which a figure was drawn to determine whether to fill an area. Each line segment in a polygon is drawn in either a clockwise or a counterclockwise direction. Whenever an imaginary line drawn from an enclosed area to the outside of a figure passes through a clockwise line segment, a count is incremented. When the line passes through a counterclockwise line segment, the count is decremented. The area is filled if the count is nonzero when the line reaches the outside of the figure.


For more information, see:

http://www.gammon.com.au/mushclient/mw_shapes.htm


Available in MUSHclient version 4.34 onwards.



Lua example

WindowPolygon (win, "20,50,180,50,180,20,230,70,180,120,180,90,20,90",
                        ColourNameToRGB("cyan"), 0, 3,   -- pen (solid, width 3)
                        ColourNameToRGB("yellow"), 0,    -- brush (solid)
                        true,    -- fill
                        false)   -- alternate fill


Lua notes

You can use the following constants for the pen style:

miniwin.pen_solid = 0
miniwin.pen_dash = 1
miniwin.pen_dot = 2
miniwin.pen_dash_dot = 3
miniwin.pen_dash_dot_dot = 4
miniwin.pen_null = 5
miniwin.pen_inside_frame = 6

-- how lines join (eg. in polygons) (add this to the style)
   
miniwin.pen_join_round = 0
miniwin.pen_join_bevel = 4096
miniwin.pen_join_miter = 8192

-- how lines end (add this to the style)
   
miniwin.pen_endcap_round = 0
miniwin.pen_endcap_square = 256
miniwin.pen_endcap_flat = 512


You can use the following constants for the brush style:

miniwin.brush_solid = 0
miniwin.brush_null = 1
miniwin.brush_hatch_horizontal = 2
miniwin.brush_hatch_vertical = 3
miniwin.brush_hatch_forwards_diagonal = 4
miniwin.brush_hatch_backwards_diagonal = 5
miniwin.brush_hatch_cross = 6
miniwin.brush_hatch_cross_diagonal = 7
miniwin.brush_fine_pattern = 8
miniwin.brush_medium_pattern = 9
miniwin.brush_coarse_pattern = 10
miniwin.brush_waves_horizontal = 11
miniwin.brush_waves_vertical = 12


Return value

eNoSuchWindow - no such miniwindow

ePenStyleNotValid - invalid pen style

eBrushStyleNotValid - invalid brush style

eInvalidNumberOfPoints - must have at least 2 points (4 numbers) and the number of numbers must be divisible by 2

eOK - completed OK

View list of return code meanings

See Also ...

Topic

MiniWindows

Functions

(GetDeviceCaps) Gets screen device capabilities
(SetCursor) Changes the shape of the mouse cursor
(TextRectangle) Specifies the size of the rectangle in which text is displayed in the output window.
(WindowAddHotspot) Adds a hotspot to a miniwindow
(WindowArc) Draws an arc in a miniwindow
(WindowBezier) Draws a B├ęzier curve in a miniwindow
(WindowBlendImage) Blends an image into a miniwindow, using a specified blending mode
(WindowCircleOp) Draws ellipses, filled rectangles, round rectangles, chords, pies in a miniwindow
(WindowCreate) Creates a miniwindow
(WindowCreateImage) Creates an image in a miniwindow
(WindowDelete) Deletes a miniwindow
(WindowDeleteAllHotspots) Deletes all hotspots from a miniwindow
(WindowDeleteHotspot) Deletes a hotspot from a miniwindow
(WindowDragHandler) Adds a drag handler to a miniwindow hotspot
(WindowDrawImage) Draws an image into a miniwindow
(WindowDrawImageAlpha) Draws an image into a miniwindow respecting the alpha channel
(WindowFilter) Performs a filtering operation over part of the miniwindow.
(WindowFont) Loads a font into a miniwindow
(WindowFontInfo) Returns information about a font
(WindowFontList) Lists all fonts loaded into a miniwindow
(WindowGetImageAlpha) Draws the alpha channel of an image into a miniwindow
(WindowGetPixel) Gets the colour of a single pixel in a miniwindow
(WindowGradient) Draws a gradient in a rectangle
(WindowHotspotInfo) Returns information about a hotspot
(WindowHotspotList) Lists all hotspots installed into a miniwindow
(WindowHotspotTooltip) Changes the tooltip text for a hotspot in a miniwindow
(WindowImageFromWindow) Creates an image from another miniwindow
(WindowImageInfo) Returns information about an image
(WindowImageList) Lists all images installed into a miniwindow
(WindowImageOp) Draws an ellipse, rectangle or round rectangle, filled with an image
(WindowInfo) Returns information about a miniwindow
(WindowLine) Draws a line in a miniwindow
(WindowList) Lists all miniwindows
(WindowLoadImage) Loads an image into a miniwindow from a disk file
(WindowMenu) Creates a pop-up menu inside a miniwindow
(WindowMergeImageAlpha) Merges an image into a miniwindow based on an alpha mask
(WindowMoveHotspot) Moves a hotspot in a miniwindow
(WindowPosition) Moves a miniwindow
(WindowRectOp) Draws a rectangle in a miniwindow
(WindowResize) Resizes a miniwindow
(WindowScrollwheelHandler) Adds a scroll-wheel handler to a miniwindow hotspot
(WindowSetPixel) Sets a single pixel in a miniwindow to the specified colour
(WindowSetZOrder) Sets the Z-Order for a miniwindow
(WindowShow) Shows or hides a miniwindow
(WindowText) Draws text into a miniwindow
(WindowTextWidth) Calculates the width of text in a miniwindow
(WindowTransformImage) Draws an image into a miniwindow with optional rotation, scaling, reflection and shearing
(WindowWrite) Writes the contents of a miniwindow to disk as a graphics file

(Help topic: function=WindowPolygon)

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