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PCB API Design Objects Interfaces. Parent page: Technical Reference - PCB APIPCB API: Design Objects Reference. The PCB API Design Objects reference includes the following sections and content: PCB Design Objects Interfaces. A PCB design object on a PCB document is represented by its interface. An interface represents an existing object in memory and its properties and methods can be invoked. A PCB design object is basically a primitive or a group object.
A primitive can be a track or an arc object. A group object is an object that is composed of child objects. For example a board outline or a component is a group object.
Since many design objects are descended from ancestor interfaces and thus the ancestor methods and properties are also available to use. For example the IPCB. If you check the IPCB. Each PCB object address has the TPCBObject. Handle type. Every existing PCB design object on a PCB document has the Board owner which represents the specific board document.
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Each existing PCB design object on a PCB document has Query Rule Properties which can be queried. A primitive has a bounding rectangle which encapsulates the region of the primitive. There are two other bounding rectangles which are for selection and for painting (refreshing and updating). IPCB. There are other two bounding rectangle methods. Example. Var. R : TCoord.
Rect. // check for comment / name objects. If P. Object. Id < > e. Text. Object Then. R : = P. Bounding. Rectangle. If R. left < Min. X Then Min. X : = R.
If R. bottom < Min. Y Then Min. Y : = R. If R. right > Max. X Then Max. X : = R. If R. top > Max. Y Then Max. Y : = R. End; See also. IPCB.
This method is used by the Board property. Example. See also. IPCB. This method retrieves the Component and is used in the Component property. Example. See also.
IPCB. This method retrieves the coordinate object and is used in the Coordinate property. Example. See also. IPCB. This method retrieves the Dimension and is used in the Dimension property. Example. See also.
IPCB. The method fetches the net of an object (if it has one). This method is used for the Net property.
Example. See also. IPCB. For example, a polygon may contain arcs and tracks, and when you only have the arc, you can retreive the polygon the arc is associated with. Example. See also. IPCB. For example e. Track. Object type will yield a Track string.
The method returns a object id string for the associated object and is used in the Object. IDString property.
Example. See also. IPCB. This method is used by the Selected property. Example. See also. IPCB. This shape is expanded or contracted radially by the amount specified by this rule. This property over- rides the solder mask expansion design rule. This method is used for the Solder.
Mask. Expansion property. Example. See also. IPCB. The TViewable. Object. ID type is a more descriptive ID of a design object than the TObject.
ID type. For example any type of dimension object is a e. Dimension type according to the TObject. ID but could be one of the e. Viewable. Object. This method is used in the DRCError property. Example. See also.
IPCB. This method sets the dimension object and is used in the Dimension property. Example. See also. IPCB. This method sets the PCB document that the object is associated with and is used in the Board property.
Example. See also. IPCB. This method sets the Component and is used in the Component property. Example. See also.
IPCB. This method retrieves the Coordinate object and is used in the Coordinate property. Example. See also. IPCB. The method sets the valid net to an object. This method is used for the Net property.
Example. See also. IPCB. This property is supported by the Get. State. This property is supported by the Get.
State. A coordinate object is a group object and is composed of design object primitives such as tracks, arcs and text objects. This property is supported by the Get. State. This property is supported by the Get. State. A dimension object is a group object and is composed of design object primitives such as tracks, arcs and text objects. This property is supported by the Get. State. Currently arc, track and fill objects are used as keep out objects.
The keepout layer generally defines areas on the PCB document that you don't want automatically or manually routed, and this can include clearance areas around mounting hole pads or high voltage components for example. This property is supported by the Get. State. Please note that this Object. Id type is a limited set and to have a wider range of Object IDs, check the TViewable. Object. Id type. This read only property is supported by the Get. State. For example e.
Track. Object type will yield a Track string. This read only property is supported by the Get. State. This shape is expanded or contracted radially by the amount specified by this rule. This property over- rides the solder mask expansion design rule.
This read- only property is supported by the Get. State. Paste mask layers are used to design stencils which will selectively place solder paste on a blank PCB. Vias normally don't have anything soldered onto them. Example. See also. IPCB. The TViewable.
Object. ID type is a more descriptive ID of a design object than the TObject. ID type. For example any type of dimension object is a e. Dimension type according to the TObject.
ID but could be one of the e. Viewable. Object.
You can set the angles to 0 and 3. Arcs have a variety of uses in the PCB design layout. For example, arcs can be used to outline component shapes.
Arcs can also be placed on a signal layer and be electrically connected to tracks. Note. You can use IPCB. To ensure the arc rotates without moving about, pass in its XCenter and YCenter attributes for the AX,AY parameters. Example//rotate the arc about its original center. Arc. Rotate. Around. XY(Arc. XCenter,Arc.
YCenter,4. 5); See also. IPCB. It is supported by the Get.
State. It is supported by the Get. State. It is supported by the Get. State. It is supported by the Get. State. It is supported by the Get. State. It is supported by the Get.
State. It is supported by the Get. State. It is supported by the Get. State. It is supported by the Get. State. It is supported by the Get.
State. A board outline object is essentially a closed polygon and is inherited from the IPCB. Although the board outline object interface is inherited from the IPCB. If the result is false, it means the primitive is definitely outside the outline.
Example See also. IPCB. This state needs to be rebuilt and validated by the system. Example See also. IPCB. This method rebuilds the board outline after it has been graphically altered which potentially could affect the internal/split planes that are connected to this outline. Example. See also. IPCB. Note, a footprint can be linked to a schematic component. When a footprint is placed in the workspace, it is assigned a designator (and optional comment).
A component is composed of primitives (normally tracks, arcs, and pads). Components are defined by footprints, which are stored in a PCB library. When a footprint is placed in the workspace, it is assigned a designator (and optional comment).
It is then referred to as a component with the defined reference. The origin in the library editor defines the reference point of a footprint. The IPCB. You can obtain the bounding rectangle of the component and calculate the mid point X and Y values to enable rotation about the center of the component if desired.
The rotation property of a component is set according to the reference point of a component, therefore the Rotation property and the Rotate. Around. XY method are equivalent only if you use the X,Y parameters for the Rotate. Around. XY method that are the same as the reference point of the component. A component is a group object and therefore composes of child objects such as arcs and tracks. You use a group iterator to fetch the child objects for that component. The IPCB. If it is successful a true value is returned otherwise false. Example. See also.
IPCB. If it is successful a true value is returned otherwise false. Example. See also. IPCB. To ensure the component rotates without moving about, pass in its midpoint (between X1,X2 and Y1, Y2) attributes for the AX,AY parameters or use the Rotation property. Example. See also.
IPCB. A channel offset denotes where the component is in a room especially when a room is being copied and a copy is created on the same document. The copies of rooms containing components are created based on their offsets. This method is used for the Channel. Offset property. Example. See also. IPCB. They are synchronized if the same components exist on both the Schematic and PCB documents.
An example is a heatsink. Component. Kind. These components are used, for example, when adding company logos to documents. Component. Kind. Note. Note, the TComponent.
Kind type is defined from RT. This method is used for the Footprint.
Description property. Example. See also. IPCB. Can use for specific purposes such as a tag or an index.
This Group. Num method is used for the Group. Num property. Example.
See also. IPCB. It is used for the 3. D viewer which works out the heights of components before displaying components in a 3. D view. This method is used for the Height property.
Example. See also. IPCB. This method is used for the Lock. Strings property. Example. See also. IPCB. This method is used for the Pattern property.
Example. See also. IPCB. The rotation parameter of TAngle type is between 0 and 3. This method is used for the Rotation property. Example. See also.
IPCB. Note: When a schematic is transferred to a blank PCB using the Update command, the source reference links for each PCB footprint is populated with source library path names. This method is used for the Source.
Component. Library property. Example. See also. IPCB. This method is used for the Source. Footprint. Library property.
Example. See also. IPCB. The path can be multi- level depending on whether it is a multi channel (sheet symbols) or a normal design (schematic sheets).