add envelope

Author: ricardoavelino

CHANGELOG.md

@@ -9,6 +9,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* Added `Envelope` class for masonry structure boundaries with intrados, extrados, and middle meshes
+* Added direct envelope creation methods to `Envelope` class:
+  * `from_crossvault()` - Creates cross vault envelopes with configurable spans and thickness
+  * `from_dome()` - Creates dome envelopes with configurable radius, center, and oculus
+  * `from_pavillionvault()` - Creates pavillion vault envelopes with spring angle support
+  * `from_pointedvault()` - Creates pointed vault envelopes with height control parameters
+* Added envelope creation functions for each vault type:
+  * `create_crossvault_envelope()` - Generates cross vault meshes and callables
+  * `create_dome_envelope()` - Generates dome meshes with circular topology
+  * `create_pavillionvault_envelope()` - Generates pavillion vault meshes with expanded option
+  * `create_pointedvault_envelope()` - Generates pointed vault meshes with height parameters
+* Added vault-specific update functions for optimization:
+  * `crossvault_middle_update()`, `crossvault_ub_lb_update()`, `crossvault_dub_dlb()`
+  * `dome_middle_update()`, `dome_ub_lb_update()`, `dome_dub_dlb()`
+  * `pavillionvault_middle_update()`, `pavillionvault_ub_lb_update()`, `pavillionvault_dub_dlb()`
+  * `pointedvault_middle_update()`, `pointedvault_ub_lb_update()`, `pointedvault_dub_dlb()`
+
 * Added comprehensive form diagram creation methods to `FormDiagram` class:
   * `create_cross()` - Creates cross discretisation with orthogonal arrangement and quad diagonals
   * `create_fan()` - Creates fan discretisation with straight lines to corners

src/compas_tna/envelope/__init__.py

@@ -0,0 +1,3 @@
+from .envelope import Envelope
+
+__all__ = ["Envelope"]