IStdShape Interface
- Cylinder
- Disk
- Sphere
- Box
- Torus
- Triangle
- Polygon
- Line
- Circle
- Rectangle
- LineInf
- EEllipse
IStdShape interface provides a simplified method for creation of standard
objects.
There are two implementations of IStdShape in DG Kernel. They create different
types of objects. The first one creates objects as 3DS, SOR and
LineEntitys.
This IStdShape can be queried from IModel
interface. To obtain the other one query
IPropertyArray from IModel, call
IPropertyArray.GetProperty("IKO_Model") and cast (query) the
returned object to IStdShape. IStdShape queried via this path creates all
objects as B-Spline surfaces or curves.
See ObjectArray sample or
NewStandardObjectForm.cs of the Model Explorer's
source code for an example
All methods create an object at the global origin and add it to the
model as the last top-level object. The returned
IIEntity interface can be used to modify location, orientation, shape and
other properties of the object. Use IFrame2,
IFrame or I3DObject
queried from the returned ISection to move the object
in 3D space.
To create a standalone object without adding it to the model call a relevant
method, assign the returned ISection reference to a variable or member to
keep the entity alive and remove the last object top-level object from the
model this IStdShape was queried from using IArray
interface.
See also: Object Array Sample, Dynamic Object Creation, Interface List
HRESULT Cylinder(double baseRadius, double topRadius, double height,
ISection** cylinder)
Parameters
baseRadius - [in] Radius of the
cylinder at z = 0 plane
topRadius - [in] Radius of the
cylinder at the top
height- [in] Height of the cylinder along its axis
(z-axis)
obj - [out]
ISection interface implemented by the created object.
-
- Remarks:
The method creates a cylindrical surface around z-axis of the global frame
and adds it to the model Depending on parameters the surface can be cylinder,
cone or truncated cone. The created object has SOR
type, which has generatrix strip
containing a single line.
HRESULT Disk(double innerRadius, double outerRadius,
ISection** disk)
Parameters
innerRadius - [in] Radius of the
inner circle
-
outerRadius - [in] Radius of the
outer edge
obj - [out]
ISection interface implemented by the created object.
- Remarks:
The method creates a two-dimensional disk in x any y plane of global axes
with center at the origin. The disk has an internal hole of radius
innerRadius, which can be removed by setting innerRadius
to 0. The created object has SOR type, which has
generatrix strip containing a single
point.
HRESULT Sphere(double radius,
ISection** sphere)
Parameters
radius - [in] Radius of the sphere
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates a sphere with center at the origin. The created object
has SOR type, which has
generatrix strip containing a single arc.
HRESULT Box(double width, double height, double length, ISection** box)
Parameters
width - [in] x-dimension of the box
height - [in] y-dimension of the box
length - [in] z-dimension of the box
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates new box aligned with the global axes. Two opposite corners
of the box are: the origin (0, 0, 0) and (width, height, length).
The created object has 3DS type.
HRESULT Torus(double radius, double radiusTube,
ISection** torus)
Parameters
radius - [in] Radius of the circular axis of the tube
radiusTube - [in] Radius of the tube
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates a torus with center at the origin. The circular axis of
the tube lies in the x and y plane of the global axes. The created object has
SOR type.
HRESULT Triangle(DIPoint*
pt0, DIPoint* pt1, DIPoint* pt2, ISection**
obj)
Parameters
pt0,pt1,pt2 - [in] corners of the triangle
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates a triangle in 3D space. Coordinates of the input points
are relative to the global axes, which will coincide with the
local frame. The created object has
Mesh Entity type.
HRESULT Polygon(DIPoint* pt0,
DIPoint* pt1, DIPoint* pt2, DIPoint* pt3,
ISection** obj)
Parameters
pt0,pt1,pt2,pt3 - [in] vertices of the polygon.
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates a filled polygon built on the supplied 3D points,
rectangle is one of shapes which can be created. The created object has
Mesh Entity type.
HRESULT Line(DIPoint* pt0,
DIPoint* pt1, ISection** obj)
Parameters
pt0,pt1 - [in] Ends of the line.
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
- Remarks:
The method creates a line connecting the points. The created object has
Line Strip type.
HRESULT Circle(double radius,
ISection** obj)
Parameters
radius - [in] Radius of the circle
obj - [out]
ISection interface implemented by the created object.
Return Values
-
- S_OK in case of
success.
-
-
- Remarks:
The method creates a circle in the x and y plane of the global axes and
center at the origin. The created object has SOR
type, which has generatrix strip
containing a single point.
HRESULT Rectangle(double width, double height,
ISection*** obj)
Parameters
width, height - [in] Dimensions of the rectangle
obj - [out]
ISection interface implemented by the created object.
-
- Remarks:
The method creates a rectangle in the x and y plane of the global axes and
center at the origin.
HRESULT LineInf(DIPoint* origin,
DIVect* direction, VARIANT_BOOL ray,
ISection** obj)
Parameters
origin - [in] A point on the line
direction - [in] Direction of the line
ray - [in] Sepcifies whether the object is a ray or an infinite both ways line
obj - [out]
ISection interface implemented by the created object.
-
- Remarks:
The method creates a ray or an infinite both ways straight line
HRESULT Ellipse(double a, double b,
ISection** obj)
Parameters
a - [in] The first radius of the ellipse
b - [in] The second radius of the ellipse
obj - [out]
ISection interface implemented by the created object.
-
- Remarks:
The method creates an ellipse in the x and y plane of the global axes and
center at the origin. The created object has
CurveGeometry type and cam
be moved in 3D with I3DObject, IFrame, etc interfaces
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