Ellipse¶

Core::Diagram::Ellipse

Overview¶

Concrete Class

An ellipse.

(Fullscreen Diagram)

Supertypes

GraphicalPrimitive

Members¶

Data Properties¶

Name	Multiplicity	Type	Ordered	Unique
Center	1	Point	no	no	The center position of the Ellipse.
FillStyle	1	FillStyle	no	no	The fill style of the Ellipse.
HorizontalSemiAxis	1	Double	no	no	The length of the horizontal semi-axis of the Ellipse in mm.
Rotation	1	Double	no	no	The rotation of the Ellipse around its center, measured clockwise and in degrees. The value must be in the inverval [0; 360).
Stroke	1	Stroke	no	no	The stroke of the Ellipse.
VerticalSemiAxis	1	Double	no	no	The length of the vertical semi-axis of the Ellipse in mm.

Geometry¶

The geometry of an Ellipse is characterized by its Center, its two axes (HorizontalSemiAxis and VerticalSemiAxis), and the Rotation of the HorizontalSemiAxis w.r.t. the x axis of the owner. The Rotation is measured clockwise and in degrees.

Example

We consider an Ellipse with

Center (10, 20),
HorizontalSemiAxis 110,
VerticalSemiAxis 50, and
Rotation 35.

The Ellipse will look like this:

Visual Center

The visual center of an Ellipse is its actual Center.

Mapping to SVG¶

An Ellipse corresponds to an svg:ellipse with these attributes:

transform describes both the Center \((c_x, c_y)\) and the Rotation \(r\) of the Ellipse.

transform = "translate( + str(\(c_x\)) + , + str(\(c_y\)) + ) rotate( + str(\(r\)) + )"
rx and ry are string representations of HorizontalSemiAxis and VerticalSemiAxis.
stroke, stroke-dasharray, stroke-dashoffset and stroke-width are set according to the SVG mapping rules for the Stroke of the Ellipse (see Stroke).
stroke-linecap = "round" and stroke-linejoin = "round" reflect the heuristic for line caps and line joins.
vector-effect = "non-scaling-stroke" reflects the heuristic for scaled symbols.
fill is set according to the SVG mapping rules for the FillStyle of the Ellipse (see FillStyle).

Example

We assume that the Stroke of the Ellipse above is 2mm #ff0000 Solid and that its FillStyle is Transparent.

{EllipseTransparentSvgCode}

Example

We consider the same Ellipse as in the previous example, except that the Stroke is 2mm #ff0000 LongDashShortDash.

{EllipseLongDashShortDashSvgCode}

Example

Finally, a variant with Stroke 2mm #ff0000 Solid and FillStyle Hatch.

{EllipseHatchSvgCode}

Center¶

Data Property

The center position of the Ellipse.

Type: Point

Multiplicity: 1

Ordered: no

Unique: no

Example¶

Point(

X = 0.0,

Y = 0.0)

FillStyle¶

Data Property

The fill style of the Ellipse.

Type: FillStyle

Multiplicity: 1

Ordered: no

Unique: no

Example¶

Transparent

HorizontalSemiAxis¶

Data Property

The length of the horizontal semi-axis of the Ellipse in mm.

Type: Double

Multiplicity: 1

Ordered: no

Unique: no

Example¶

7.5

Rotation¶

Data Property

The rotation of the Ellipse around its center, measured clockwise and in degrees. The value must be in the inverval [0; 360).

Type: Double

Multiplicity: 1

Ordered: no

Unique: no

Example¶

270.0

Stroke¶

Data Property

The stroke of the Ellipse.

Type: Stroke

Multiplicity: 1

Ordered: no

Unique: no

Example¶

Stroke(

Color = Color(

B = 0,

G = 0,

R = 128),

DashStyle = Solid,

Width = 0.3)

VerticalSemiAxis¶

Data Property

The length of the vertical semi-axis of the Ellipse in mm.

Type: Double

Multiplicity: 1

Ordered: no

Unique: no

Example¶

7.5

Example in DEXPI XML¶

<Object type="Core/Diagram.Ellipse">
  <Data property="Center">
    <AggregatedDataValue type="Core/Diagram.Point">
      <Data property="X">
        <Double>0.0</Double>
      </Data>
      <Data property="Y">
        <Double>0.0</Double>
      </Data>
    </AggregatedDataValue>
  </Data>
  <Data property="FillStyle">
    <DataReference data="Core/Diagram.FillStyle.Transparent"/>
  </Data>
  <Data property="HorizontalSemiAxis">
    <Double>7.5</Double>
  </Data>
  <Data property="Rotation">
    <Double>270.0</Double>
  </Data>
  <Data property="Stroke">
    <AggregatedDataValue type="Core/Diagram.Stroke">
      <Data property="Color">
        <AggregatedDataValue type="Core/Diagram.Color">
          <Data property="B">
            <Integer>0</Integer>
          </Data>
          <Data property="G">
            <Integer>0</Integer>
          </Data>
          <Data property="R">
            <Integer>128</Integer>
          </Data>
        </AggregatedDataValue>
      </Data>
      <Data property="DashStyle">
        <DataReference data="Core/Diagram.DashStyle.Solid"/>
      </Data>
      <Data property="Width">
        <Double>0.3</Double>
      </Data>
    </AggregatedDataValue>
  </Data>
  <Data property="VerticalSemiAxis">
    <Double>7.5</Double>
  </Data>
</Object>