Difference between revisions of "User:Le Forgeron/compound"
Jump to navigation
Jump to search
Le Forgeron (talk | contribs) (Created page with "{{User:Le_Forgeron/HgPovray38/soon}} == Access to part of compound object == Compound objects can be made of: * Constructive Solid Geometry (CSG : difference, union, merge, ...") |
Le Forgeron (talk | contribs) |
||
| Line 1: | Line 1: | ||
| − | {{User:Le_Forgeron/HgPovray38/ | + | {{User:Le_Forgeron/HgPovray38/available}} |
== Access to part of compound object == | == Access to part of compound object == | ||
| Line 5: | Line 5: | ||
Compound objects can be made of: | Compound objects can be made of: | ||
* Constructive Solid Geometry (CSG : difference, union, merge, intersection) | * Constructive Solid Geometry (CSG : difference, union, merge, intersection) | ||
| − | * Generalised | + | * Generalised Symmetric Difference ([[User:Le_Forgeron/gsd|GSD]]: interunion, intermerge) |
=== Data access === | === Data access === | ||
| Line 18: | Line 18: | ||
<pre> | <pre> | ||
| − | child | + | child ( Compound_Object_ID , Index ) |
</pre> | </pre> | ||
The index start at 0 for the first child of the CSG. Only the first level of the CSG is explored (recursion in CSG structure must be handled the same way: with recursion). | The index start at 0 for the first child of the CSG. Only the first level of the CSG is explored (recursion in CSG structure must be handled the same way: with recursion). | ||
| − | It is recommended to use <code>children( | + | It is recommended to use <code>children( Compound_Object_ID )</code> to check the object first, as <code>child</code> generates an error whenever: |
* the object is not compound | * the object is not compound | ||
* the index is out of bound in regard to the number of first level subobject in the compound object | * the index is out of bound in regard to the number of first level subobject in the compound object | ||
Latest revision as of 08:10, 3 June 2019
- Everything about HgPovray38 in User:Le_Forgeron/HgPovray38
- Code is available on branch hgpovray38 at https://github.com/LeForgeron/povray
Access to part of compound object
Compound objects can be made of:
- Constructive Solid Geometry (CSG : difference, union, merge, intersection)
- Generalised Symmetric Difference (GSD: interunion, intermerge)
Data access
The children function take an object as parameter, and return the number of first level sub-objects in it.
- if parameter is not compound compatible, it returns -1
Getting a copy of an object inside a compound object
A small SDL extension, to retrieve the object inside an existing compound object (CSG or GSD).
child ( Compound_Object_ID , Index )
The index start at 0 for the first child of the CSG. Only the first level of the CSG is explored (recursion in CSG structure must be handled the same way: with recursion).
It is recommended to use children( Compound_Object_ID ) to check the object first, as child generates an error whenever:
- the object is not compound
- the index is out of bound in regard to the number of first level subobject in the compound object