About Ellipses
An ellipse is a closed curve defined by two fixed points (
f1 and
f2) such that the sum of the distances (
d1 +
d2) from any point on the curve to the two fixed points is constant. The
following illustration shows an ellipse drawn by using the
Ellipse function.
When calling
Ellipse, an application supplies the coordinates of the upper left and lower right
corners of the ellipse's bounding rectangle. A
bounding rectangle is the smallest rectangle completely surrounding the ellipse. When Windows
draws the ellipse, it excludes the right and lower sides if no world
transformations are set. Therefore, for any rectangle measuring
x units wide by
y units high, the associated ellipse measures
x
1 units wide by
y1 units high. If the application sets a world transformation by calling the
SetWorldTransform or
ModifyWorldTransform function, Windows includes the right and lower sides.
- Software for developers
-
Delphi Components
.Net Components
Software for Android Developers
- More information resources
-
MegaDetailed.Net
Unix Manual Pages
Delphi Examples
- Databases for Amazon shops developers
-
Amazon Categories Database
Browse Nodes Database
