DADrawingSurface Class


		Contents Index Topic Contents
	Previous Topic: DADashStyle Class Next Topic: DAEndStyle Class

DADrawingSurface Class

The DADrawingSurface class uses a style of drawing that depends on a graphics context. This is in contrast to the other DirectAnimation classes that use a constructive approach. The constructive approach combines primitive data types into a more complex model, in a hierarchical fashion.
The graphics context approach is analagous to the way a pen plotter works, where the pen acts as the mechanical extension of a hand and the plotter acts as a piece of paper. To draw something, the pen is directed to a location on the plotter and then draws the shape. Many people find this approach to be more familiar than hierarchical modeling. For example, to draw the sun in the sky, it may seem more obvious to simply draw a yellow circle exactly where you want it, instead of first drawing a circle, then creating a yellow circle, and then, with a transform, creating yet another yellow circle that is now correctly placed. The difference is in the approach rather than in capabilities.
A DADrawingSurface object maintains a graphics state object for two-dimensional graphics. This state includes attributes such as line style, fill style, border style, font style, and two-dimensional transformations. The drawing commands (such as Oval and RoundRect are always interpreted in terms of the current state.
DADrawingSurface Subroutines
DADrawingSurface Properties
Relevant Functions from the DAStatics Class

DADrawingSurface Subroutines

ArcDegrees

ArcRadians

AutoSizeFillScale

BorderColor

BorderDashStyle

BorderJoinStyle

BorderWidth

Clear

Crop

CropPoints

DrawPath

FillColor

FillImage

FillPath

FillStyle

FillTexture

FixedFillScale

Font

GradientExtent

GradientExtentPoints

GradientRolloffPowerAnim

GradientRolloffPower

GradientShape

HorizontalFillScale

Line

LineColor

LineDashStyle

LineEndStyle

LineJoinStyle

LinePoints

LineWidth

OpacityAnim

Opacity

Oval

OverlayImage

PieDegrees

PieRadians

Polygon

Polyline

Rect

Reset

RestoreGraphicsState

RoundRect

SaveGraphicsState

SecondaryFillColor

Text

TextPoint

Transform

VerticalFillScale

ArcDegrees
DADrawingSurface Class
Draws a portion of an oval. (This is, in effect, an arc).
The following example, in VBScript, draws a series of differently-sized arcs:
<HTML>
<HEAD>
<TITLE>Demonstration of ArcDegrees subroutine</TITLE>
</HEAD>

<BODY>

<DIV ID=controlDiv>
<OBJECT ID="DAViewer"
        STYLE="position:absolute; left:10; top:10;width:450;height:450"
        CLASSID="CLSID:B6FFC24C-7E13-11D0-9B47-00C04FC2F51D">
</OBJECT>
</DIV>

</DIV>

<SCRIPT LANGUAGE="VBScript">

sub window_onLoad 

  Set s = DAViewer.MeterLibrary
  Set ds = s.NewDrawingSurface()

  ds.Text "Degrees 0", -.04, .06
  ds.ArcDegrees 0, .05, 0, 0, .01, .01
  
  ds.Text "Degrees 45", -.04, .04
  ds.ArcDegrees 0, .03, 0, 45, .01, .01

  ds.Text "Degrees 90", -.04, .02
  ds.ArcDegrees 0, .01, 0, 90, .01, .01

  ds.Text "Degrees 180", -.04, 0
  ds.ArcDegrees 0, -.01, 0, 180, .01, .01

  ds.Text "Degrees 270", -.04, -.02
  ds.ArcDegrees 0, -.03, 0, 270, .01, .01

  ds.Text "Degrees 360", -.04, -.04
  ds.ArcDegrees 0, -.05, 0, 360, .01, .01

  DAViewer.Image = ds.Image
  DAViewer.Start

end sub

</SCRIPT>

</BODY>
</HTML>
drawingObj.ArcDegrees(
  xPos,
  yPos,
  startAngle,
  endAngle,
  arcWidth,
  arcHeight
  )
Parameters

xPos
The x-coordinate of the lower-lefthand corner of the oval's bounding box.
yPos
The y-coordinate of the lower-lefthand corner of the oval's bounding box.
startAngle
The angle, in degrees, where the arc begins.
endAngle
The angle, in degrees, where the arc ends.
arcWidth
The arc width, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
arcHeight
The arc height, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.

ArcRadians
DADrawingSurface Class
Same as ArcDegrees except that startAngle and endAngle are expessed in radians.
drawingObj.ArcRadians((
  xPos,
  yPos,
  startAngle,
  endAngle,
  arcWidth,
  arcHeight
  )
AutoSizeFillScale
DADrawingSurface Class
Scales the fill pattern horizontally and vertically to fit the drawn object's bounding box.
drawingObj.AutoSizeFillScale( )
Remarks

There is no guarantee that the entire fill style will appear in drawn object because many fill regions are not rectangular.
BorderColor
DADrawingSurface Class
Specifies the color of a filled region's outline (border).
drawingObj.BorderColor(
  color
  )
Parameters

color
The DAColor object that is the color of the border.

BorderDashStyle
DADrawingSurface Class
Sets the dash style of the border.
drawingObj.BorderDashStyle(
  id
  )
Parameters

id
A number (a long) that sets the dash style of the border. For a table listing the available choices, see LineDashStyle.

BorderJoinStyle
DADrawingSurface Class
Specifies the border's join style.
drawingObj.BorderJoinStyle(
  id
  )
Parameters

id
A DAJoinStyle.

BorderWidth
DADrawingSurface Class
Sets the width of the border, in points. Border widths are affected by Transform. For example, scaling by 2 will double the border width.
The following example demonstrates different border widths, using JScript:
<HTML>
<HEAD>
<TITLE>Demonstration of BorderWidth Subroutine</TITLE>
</HEAD>

<BODY>

<DIV ID=controlDiv>
<OBJECT ID="DAViewer"
        STYLE="position:absolute; left:10; top:10;width:450;height:450"
        CLASSID="CLSID:B6FFC24C-7E13-11D0-9B47-00C04FC2F51D">
</OBJECT>
</DIV>

</DIV>

<SCRIPT LANGUAGE="JScript" for="window" event="onload">
  s  = DAViewer.MeterLibrary;
  ds = s.NewDrawingSurface();

  ds.BorderWidth(1);
  ds.Rect(0, .05, .06, .01);
  
  ds.BorderWidth(2);
  ds.Rect(0, .03, .06, .01);

  ds.BorderWidth(3);
  ds.Rect(0, .01, .06, .01);
  
  ds.BorderWidth(4);
  ds.Rect(0, -.01, .06, .01);

  ds.BorderWidth(5);
  ds.Rect(0, -.03, .06, .01);
  
  DAViewer.Image = ds.Image;
  DAViewer.Start();

</SCRIPT>

</BODY>
</HTML>
drawingObj.BorderWidth(
  width
  )
Parameters

width
A number (a double) that is the border width. The units are in points.

Clear
DADrawingSurface Class
Resets both the global images (Image) and the local context images (LocalContextImage). All attributes for the local context images are set to their defaults.
drawingObj.Clear( )
Crop
DADrawingSurface Class
Sets a rectangular cropping region outside of which drawing commands have no effect. Note that, unlike the DAImage Crop() function, this subroutine affects what will be drawn, not what has been drawn.
drawingObj.Crop(
  minX,
  minY,
  maxX,
  maxY
  )
Parameters

minX
The number (a double) specifying the minimum x-coordinate of the rectangular cropping region.
minY
The number (a double) specifying the minimum y-coordinate of the rectangular cropping region.
maxX
The number (a double) specifying the maximum x-coordinate of the rectangular cropping region.
maxY
The number (a double) specifying the maximum y-coordinate of the rectangular cropping region.

CropPoints
DADrawingSurface Class
Same as Crop except that the arguments are specified as DAPoint2 objects.
drawingObj.CropPoints(
  min,
  max
  )
Parameters

min
The DAPoint2 object specifying the minimum point of the cropping region.
max
The DAPoint2 object specifying the maximum point of the cropping region.

DrawPath
DADrawingSurface Class
Same as Polyline, except that it takes a DAPath2 object instead of points.
drawingObj.DrawPath(
  path
  )
Parameters

path
The DAPath2 object defining the line.

FillColor
DADrawingSurface Class
If used with a gradient fill, specifies the starting color. If used with a hatched fill, specifies its color. It is ignored for solid fills. The default foreground color is black.
drawingObj.FillColor(
  foreground
  )
Parameters

foreground
The DAColor object that is the foreground color.

FillImage
DADrawingSurface Class
Creates a fill pattern that is an image. This subroutine allows you to create your own fill pattern from any type of two-dimensional animation. The default is to scale the image to fit the window. If the mode is set to FixedFillScale and the image is transformed before being passed in, it will retain its position relative to the shape.
drawingObj.FillImage(
  image
  )
Parameters

img
The DAImage object to be used as the fill.

FillPath
DADrawingSurface Class
Same as Polygon except that it takes a DAPath2 object rather than points.
drawingObj.FillPath(
  path
  )
Parameters

path
The DAPath2 object defining the polygon.

FillStyle
DADrawingSurface Class
Sets the fill style. The parameter specifying the fill style, id, can be any of the following possible styles:

Id Style

0 Empty (does not support mouse events)

1 Solid

2 Empty Pickable (supports mouse events)

3 HatchHorizonal

4 HatchVertical

5 HatchForwardVertical

6 HatchBackwardDiagonal

7 HatchCross

8 HatchDiagonalCross

9 HorizontalGradient

10 VerticalGradient

11 RadialGradient

12 LinearGradient

13 RectangularGradient

14 ShapeGradient

Fill styles are used to paint closed regions. The default fill type is the solid fill. Some uses of particular fill styles are:
Empty fill styles are transparent and are used for making hollow objects and hotspots.
Solid fill styles give a uniform color throughout the selected area.
Hatched fill styles give a characteristic line pattern on top of either a transparent or a solid-color background.
Texture fill styles underlay the fill region with 2-D media such as a movie or still image.
Gradient fill styles blend between two or more colors in a smooth transition.

Fill colors are used in three ways. For gradient fills, the fill color is the first color used for blending. For hatched fills, it is the color used to draw the hatch marks. For solid fills, it is the color used for the entire filled area. It does not apply to empty and texture fill styles. The default color is black.
A secondary (or background) fill color is possible and is also used in several ways. For gradient fills, it specifies the second color used for blending. For hatch fills, it is the color used to fill around the hatch marks. For empty fills, it is always transparent. Solid fills have no secondary color. The default secondary color depends on the fill type. For solid and gradient fills, the default background color is white. For hatched fills, the default background color is transparent.
Gradient and texture fills can either be scaled to fit the shape being filled or can use their own scaling information. This is called a size-to-fit option. It does not apply to empty, solid, or hatched fill styles.
Scale-to-fit uses rectangular bounding regions to scale the fill style into the region to be filled. Thus, scale-to-fit does not guarantee that the entire fill style will appear in the shape, because many fill regions are not rectangular. Gradient fills in which no interpolation coordinates are specified use scale-to-fit by default. Gradient fills with explicit coordinates as well as all texture fills use, by default, their local coordinates and are not scaled to fit the drawing region. For particular scale-to-fit subroutines, see AutoSizeFillScale, FixedFillScale, HorizontalFillScale, and VerticalFillScale.
For gradient fills, it can be useful to explicitly set the starting and ending positions for the transition between the colors. For example, with a radial gradient, (which is a color transition in a circular shape) it may be useful to set the center point. To set these points, use the GradientExtent subroutine.
The GradientRolloffPower subroutine uses an exponent (the power argument) to control how rapidly one color transitions into another. A value of 1 is a linear transition. For 0 < power < 1 the transition occurs rapidly, while power > 1 means that the transition occurs more slowly. For example, if you are transitioning from red to blue, and power = 2, you will see a great deal of red in the gradient fill. On the other hand, if power = 0.5 (the inverse of 2), you will see very little red. If power = 0, you will see only blue.
More precisely, if x is considered the normalized distance (from 0 to 1), then the gradient is x^p, where p is in the range [0, infinity].
The following table summarizes the default values of the different fill attributes (such as color) for each fill style:

Default Empty Empty/Pickable Solid Hatched Gradient Texture Image

Fill Color N/A N/A Black Black Black N/A N/A

Secondary N/A N/A N/A Transparent White N/A N/A

Mouse Events? Always No Always Yes No No No No No

Size-to-fit N/A N/A N/A N/A Yes, if no start point, No, if start point specified Always No No

Gradient End Points N/A N/A N/A N/A No Default N/A N/A

Rolloff Power N/A N/A N/A N/A 1 N/A N/A

drawingObj.FillStyle(
  id
  )
Parameters

id
The id (a long) of the fillstyle.

FillTexture
DADrawingSurface Class
Specifies a fill image that will be tiled (according to its bounding box) and/or clipped to fit within the extents of the path. It is not scaled. If the image is transformed before being passed in, it will retain its position relative to the shape.
drawingObj.FillTexture(
  image
  )
Parameters

image
The DAImage used as the fill.

FixedFillScale
DADrawingSurface Class
Specifies that the fill pattern will not be be scaled. The fill style attributes are applied directly to the drawn object, regardless of size.
drawingObj.FixedFillScale( )
Font
DADrawingSurface Class
Sets the font attributes.
drawingObj.Font(
  face,
  size,
  bold,
  italic,
  underline,
  strikethrough
  )
Parameters

face
The name of the font family (this is a string).
size
The size of the font, in points.
bold
A boolean that turns the bold attribute on or off.
italic
A boolean that turns the italic attribute on or off.
underline
A boolean that turns the underline attribute on or off.
strikethrough
A boolean that turns the strikethrough attribute on or off.

GradientExtent
DADrawingSurface Class
Specifies a length and a direction for a gradient to transition between colors. The starting color is unblended, as is the ending color. Between the points, the colors are blended according to the gradient type.
drawingObj.GradientExtent(
  startX,
  startY,
  endX,
  endY
  )
Parameters

startX
The starting x-coordinate(a double).
startY
The starting y-coordinate (a double).
endX
The ending x-coordinate (a double).
endY
The ending y-coordinate (a double).

See Also

FillStyle
GradientExtentPoints
DADrawingSurface Class
Same as GradientExtent except that the arguments are DAPoint2 objects.
drawingObj.GradientExtentPoints(
  startPoint,
  endPoint
  )
Parameters

startPoint
The DAPoint2 object that specifies the location of the starting color.
endPoint
The DAPoint2 object that specifies the location of the ending color.

GradientRolloffPowerAnim
DADrawingSurface Class
Controls the sharpness of the transition between the colors.
drawingObj.GradientRolloffPowerAnim(
  power
  )
Parameters

power
A number (a double) that is an exponent controlling how rapidly one color transitions into another. A value of 1 is a linear transition. For 0 < power < 1 the transition occurs rapidly, while power > 1 means that the transition occurs more slowly. For example, if you are transitioning from red to blue, and power = 2, you will see a great deal of red in the gradient fill. On the other hand, if power = 0.5 (the inverse of 2), you will see very little red. If power = 0, you will see only blue. More precisely, if x is considered the normalized distance (from 0 to 1), then the gradient is x^p, where p is in the range [0, infinity].

GradientRolloffPower
DADrawingSurface Class
Same as GradientRolloffPowerAnim except that power is a non-animated number (a double).
drawingObj.GradientRolloffPower(
  power
  )
GradientShape
DADrawingSurface Class
Specifies a polygon that is progressively scaled to control the shape of the color transition. This applies only if the FillStyle subroutine was invoked with an id of 14 (ShapeGradient).
drawingObj.GradientShape(
  pts
  )
Parameters

pts
The array (variant) of points specifying the polygon.

HorizontalFillScale
DADrawingSurface Class
Stretches or compresses the fill pattern horizontally to match the width of the drawn object's bounding box.
drawingObj.HorizontalFillScale( )
Remarks

There is no guarantee that the entire fill style will appear in drawn object because many fill regions are not rectangular.
Line
DADrawingSurface Class
Draws a line segment from the starting point to the ending point, using the current LineDashStyle.
drawingObj.Line(
  startX,
  startY,
  endX,
  endY
  )
Parameters

startX
The starting point's x-coordinate (a double).
startY
The starting point's y-coordinate (a double).
endX
The ending point's x-coordinate (a double).
endY
The ending point's y-coordinate (a double).

LineColor
DADrawingSurface Class
Sets the color of the line.
drawingObj.LineColor(
  col
  )
Parameters

col
The DAColor object that sets the line color.

LineDashStyle
DADrawingSurface Class
Sets the dash style of the line. The parameter specifying the dash style, id, can be any of the following possible styles:

ID Dash Style

0 Null

1 Solid

2 Dash

drawingObj.LineDashStyle(
  id
  )
Parameters

id
The id (a long) of the selected dash style.

LineEndStyle
DADrawingSurface Class
Sets the end style of the line. The parameter specifying the end style, id, can be any of the following possible styles:

ID End Style

0 Flat

1 Square

2 Round

drawingObj.LineEndStyle(
  id
  )
Parameters

id
The number (a long) specifying which end style to use.

LineJoinStyle
DADrawingSurface Class
Sets the join style of the line. The parameter specifying the join style, id, can be any of the following possible styles:

ID Join Style

0 Bevel

1 Round

2 Miter

drawingObj.LineJoinStyle(
  id
  )
Parameters

id
The id (a long) of the selected join style.

LinePoints
DADrawingSurface Class
Same as Line except that the arguments are DAPoint2 objects (they can be animated).
drawingObj.LinePoints(
  pt1,
  pt2
  )
Parameters

pt1 and pt2
The DAPoint2 objects specifying the line's starting and ending points.

LineWidth
DADrawingSurface Class
Sets the width of the current line, in points. Line widths are affected by Transform. For example, scaling by 2 will double the line width.
drawingObj.LineWidth(
  width
  )
Parameters

width
The width of the current line, in points.

OpacityAnim
DADrawingSurface Class
Sets the opacity used by drawing commands. In contrast to the DAImage Opacity function, this subroutine affects what will be drawn rather than what has been drawn.
drawingObj.OpacityAnim(
  opac
  )
Parameters

opac
The DANumber object that sets the opacity. Values can range from 0.0 (fully transparent) to 1.0 (fully opaque). This must be an animated number.

Opacity
DADrawingSurface Class
Same as OpacityAnim except that opac is a non-animated number (a double).
drawingObj.Opacity(
  opac
  )
Oval
DADrawingSurface Class
Draws an outline of an oval and fills it, using the current fill and border styles.
The following example uses VBScript to draw an oval with a hatch cross fill style:
<HTML>
<HEAD>
<TITLE>Oval with Hatch Cross Fill Style</TITLE>
</HEAD>

<BODY>

<DIV ID=controlDiv>
<OBJECT ID="DAViewer"
        STYLE="position:absolute; left:10; top:10;width:450;height:450"
        CLASSID="CLSID:B6FFC24C-7E13-11D0-9B47-00C04FC2F51D">
</OBJECT>
</DIV>

</DIV>

<SCRIPT LANGUAGE="VBScript">

sub window_onLoad 

  Set s = DAViewer.MeterLibrary
  Set ds = s.NewDrawingSurface()

  ds.FillColor          s.ColorRgb255(0,0,200)
  ds.SecondaryFillColor s.ColorRgb255(255,0,0)

  ds.Text "Hatch Cross", -.04, .06
  ds.FillStyle 7
  ds.Oval -.04, -.04, .1, .1
  
  DAViewer.Image = ds.Image
  DAViewer.Start

end sub

</SCRIPT>

</BODY>
</HTML>
drawingObj.Oval(
  xPos,
  yPos,
  width,
  height
  )
Parameters

xPos
The x-coordinate (a double) of the lower-lefthand corner of the oval's bounding box.
yPos
The y-cooordiate (a double) of the lower-lefthand corner of the oval's bounding box.
width
The width of the oval, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
height
The height of the oval, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.

OverlayImage
DADrawingSurface Class
Overlays a DAImage object onto the current drawing surface. This means the image can be animated.
drawingObj.OverlayImage(
  img
  )
Parameters

img
The DAImage image.

PieDegrees
DADrawingSurface Class
Renders a closed path that traces a segment of an oval and connects it to the origin. (In effect, it is a pie-shaped wedge).
The following example uses VBScript to draw a series of wedges, each with a solid-red fill:
<HTML>
<HEAD>
<TITLE>Demonstration of PieDegrees Subroutine</TITLE>
</HEAD>

<BODY>

<DIV ID=controlDiv>
<OBJECT ID="DAViewer"
        STYLE="position:absolute; left:10; top:10;width:450;height:450"
        CLASSID="CLSID:B6FFC24C-7E13-11D0-9B47-00C04FC2F51D">
</OBJECT>
</DIV>

</DIV>

<SCRIPT LANGUAGE="VBScript">

sub window_onLoad 

  Set s = DAViewer.MeterLibrary
  Set ds = s.NewDrawingSurface()

  ds.FillStyle          1
  ds.FillColor          s.ColorRgb255(255,0,0)
  
  ds.Text "Degrees 0", -.04, .06
  ds.PieDegrees 0, .05, 0, 0, .01, .01
  
  ds.Text "Degrees 45", -.04, .04
  ds.PieDegrees 0, .03, 0, 45, .01, .01

  ds.Text "Degrees 90", -.04, .02
  ds.PieDegrees 0, .01, 0, 90, .01, .01

  ds.Text "Degrees 180", -.04, 0
  ds.PieDegrees 0, -.01, 0, 180, .01, .01

  ds.Text "Degrees 270", -.04, -.02
  ds.PieDegrees 0, -.03, 0, 270, .01, .01

  ds.Text "Degrees 360", -.04, -.04
  ds.PieDegrees 0, -.05, 0, 360, .01, .01

  DAViewer.Image = ds.Image
  DAViewer.Start

end sub

</SCRIPT>

</BODY>
</HTML>
drawingObj.PieDegrees(
  xPos,
  yPos,
  startAngle,
  endAngle,
  arcWidth,
  arcHeight
  )
Parameters

xPos
The x-coordinate (a double) of the lower-lefthand corner of the oval's bounding box.
yPos
The y-coordinate (a double) of the lower-lefthand corner of the oval's bounding box.
startAngle
The starting angle, in degrees (a double) of the wedge.
endAngle
The ending angle, in degrees (a double) of the wedge.
arcWidth
The double representing the arc width, expressed in meters, or pixels, depending on whether the MeterLibrary or the PixelLibrary is selected.
arcHeight
The double representing the arc height, expressed in meters, or pixels, depending on whether the MeterLibrary or the PixelLibrary is selected.

PieRadians
DADrawingSurface Class
Same as PieDegrees except that startAngle and endAngle are expressed in radians.
drawingObj.PieRadians(
  xPos,
  yPos,
  startAngle,
  endAngle,
  arcWidth,
  arcHeight
  )
Polygon
DADrawingSurface Class
Draws and fills a polygon, using the current fill and border styles. The points can be specified as a variant array of either DAPoint2[] objects or doubles. The array of doubles array must contain (2 * numPts) because it represents (x, y) coordinate pairs.
drawingObj.Polygon(
  points
  )
Parameters

points
The array (variant) of either DAPoint2[] objects or (x, y) coordinates (doubles).

Polyline
DADrawingSurface Class
Draws a set of line segments according to the current line style. The points can be specified as a variant array of either DAPoint2[] objects or doubles. The array of doubles array must contain (2 * numPts) because it represents (x, y) coordinate pairs.
drawingObj.Polyline(
  points
  )
Parameters

points
The array (variant) of either DAPoint2[] objects or (x, y) coordinates (doubles).

Rect
DADrawingSurface Class
Draws and fills a rectangle, using the current fill and border styles.
drawingObj.Rect(
  xPos,
  yPos,
  width,
  height
  )
Parameters

xPos
A double that is the x-coordinate of the lower-lefthand corner of the rectangle's bounding box.
yPos
A double that is the y-coordinate of the lower-lefthand corner of the rectangle's bounding box.
width
The width of the rectangle (a double), in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
height
The height of the rectangle (a double), in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.

Reset
DADrawingSurface Class
Resets the local context and sets all attributes to their defaults (nested transformations from the context still apply although local transformations are reset). This subroutine affects only the state used for upcoming drawing methods, not the current drawing.
drawingObj.Reset( )
RestoreGraphicsState
DADrawingSurface Class
Restores the drawing surface's graphics state (the font, color, fillstyles, and so on) to what it was before the last SaveGraphicsState.
drawingObj.RestoreGraphicsState( )
RoundRect
DADrawingSurface Class
Draws a rectangle with rounded, rather than square, corners. The corners are considered to be segments of an oval (in effect, an arc).
drawingObj.RoundRect(
  xPos,
  yPos,
  width,
  height,
  arcWidth,
  arcHeight
  )
Parameters

xPos
A double that is the x-coordinate of the lower-lefthand corner of the rectangle's bounding box.
yPos
A double that is the y-coordinate of the lower-lefthand corner of the rectangle's bounding box.
width
A double that is the width of the rectangle, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
height
A double that is the the height of the rectangle, in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
arcWidth
The arc width (a double) in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.
arcHeight
The arc height (a double), in either pixels or meters, depending on whether the PixelLibrary or the MeterLibrary is selected.

SaveGraphicsState
DADrawingSurface Class
Saves the drawing surface's current graphics state by pushing it onto an internal stack.
drawingObj.SaveGraphicsState( )
SecondaryFillColor
DADrawingSurface Class
Specifies a secondary fill color. For gradient fills, this is the second color used for blending. For hatch fills, it is the color used to fill around the hatch marks. For empty fills, it is always transparent. It does not apply to solid fills.
drawingObj.SecondaryFillColor(
  val
  )
Parameters

val
The DAColor object that is the secondary color.

See Also

FillColor
Text
DADrawingSurface Class
Creates a filled region from the text outlines, using the current fontstyle to determine the size of the font and the face. Color and other attributes come from the current fill and border styles. Note that the color attribute of the current font style is ignored. The text's starting location is given by xPos, yPos.
drawingObj.Text(
  string,
  xPos,
  yPos
  )
Parameters

string
The text used as the outline (a string).
xPos
The starting point's x-coordinate (a double).
yPos
The starting point's y-coordinate (a double).

TextPoint
DADrawingSurface Class
Same as Text except that the starting location is given by a DAPoint2 object.
drawingObj.TextPoint(
  string,
  pt
  )
Parameters

string
The text used as the outline (a string).
pt
The DAPoint2 object designating the text's starting location. This can be animated.

Transform
DADrawingSurface Class
Transform operations include translation, scaling, and/or shearing. The subroutine affects only the state used for upcoming drawing methods, not the current drawing. This operation is cumulative.
drawingObj.Transform(
  xf
  )
Parameters

xf
The DATransform2 object that is the two-dimensional transform.

VerticalFillScale
DADrawingSurface Class
Stretches or compresses the fill pattern vertically to match the width of the drawn object's bounding box.
drawingObj.VerticalFillScale( )
Remarks

There is no guarantee that the entire fill style will appear in drawn object because many fill regions are not rectangular.
DADrawingSurface Properties

BorderStyle

ClipMatte

FontStyle

HatchFillTransparent

Image

LineStyle

LocalContextImage

MouseEventsEnabled

BorderStyle
DADrawingSurface Class
A DALineStyle object that specifies how the outline of a filled region will be drawn. The color specified in the line style determines the color of the border. (Interior fills are specified with FillStyle.) For an alternative way of setting border attributes, see BorderColor, BorderDashStyle, BorderJoinStyle, and BorderWidth.
drawingObj.BorderStyle
ClipMatte
DADrawingSurface Class
Specifies an image matte (or masking stencil) to the drawing context. Note that, unlike the DAImage Clip function, this property affects what will be drawn rather than what has already been drawn.
drawingObj.ClipMatte
FontStyle
DADrawingSurface Class
A DAFontStyle (animated) object that sets font attributes such as face, size, and color.
drawingObj.FontStyle
See Also

Font
HatchFillTransparent
DADrawingSurface Class
A boolean specifying whether the hatch fill is transparent or not.
drawingObj.HatchFillTransparent
Image
DADrawingSurface Class
Returns the DAImage object (animated image) associated with the DrawingSurface.
drawingObj.Image
LineStyle
DADrawingSurface Class
Adds a DALineStyle to the graphics state. A DALineStyle object determines the line color, dash style, width, endpoint, and join style. Setting this property affects how the line drawing commands (such as ArcRadians and Polyline) are drawn.
drawingObj.LineStyle
See Also

LineColor, LineDashStyle, LineEndStyle, LineJoinStyle, LineWidth
LocalContextImage
DADrawingSurface Class
Returns an image that corresponds to what was drawn since the latest SaveGraphicsState call. This property is useful for instancing and procedural tiling.
drawingObj.LocalContextImage
MouseEventsEnabled
DADrawingSurface Class
Specifies whether mouseover and selection events will be detected for the objects subsequently drawn. TRUE means that events are detected and FALSE means they are not.
drawingObj.MouseEventsEnabled
Relevant Functions from the DAStatics Class

lib.ImportDirectDrawSurface(dds, updateEvent)
lib.NewDrawingSurface()
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.
Top of Page

Id	Style
0	Empty (does not support mouse events)
1	Solid
2	Empty Pickable (supports mouse events)
3	HatchHorizonal
4	HatchVertical
5	HatchForwardVertical
6	HatchBackwardDiagonal
7	HatchCross
8	HatchDiagonalCross
9	HorizontalGradient
10	VerticalGradient
11	RadialGradient
12	LinearGradient
13	RectangularGradient
14	ShapeGradient

Default	Empty	Empty/Pickable	Solid	Hatched	Gradient	Texture	Image
Fill Color	N/A	N/A	Black	Black	Black	N/A	N/A
Secondary	N/A	N/A	N/A	Transparent	White	N/A	N/A
Mouse Events?	Always No	Always Yes	No	No	No	No	No
Size-to-fit	N/A	N/A	N/A	N/A	Yes, if no start point, No, if start point specified	Always No	No
Gradient End Points	N/A	N/A	N/A	N/A	No Default	N/A	N/A
Rolloff Power	N/A	N/A	N/A	N/A	1	N/A	N/A