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NDEVR
API Documentation
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NDEVR
API Documentation
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Provides static functions to extrude 2D/3D shapes along polyline paths, generating triangulated solid geometry. More...
Static Public Member Functions | |
| template<class t_type> | |
| static void | Extrude (Buffer< Vector< 3, uint04 > > &indices, Buffer< Vertex< 3, t_type > > &vertices, const Polyline< 3, t_type > &shape_to_extrude, const Polyline< 3, t_type > &extrude_path, const Vector< 3, t_type > &plane_normal, bool is_path_closed, const Matrix< fltp08 > &transform=Matrix< fltp08 >(1.0)) |
| Extrudes a cross-section polyline along an extrusion path, generating triangle indices and vertices for a solid mesh. | |
| static void | ExtrudePolylineAlongGeo (Geometry &linework, const Polyline< 3, fltp08 > &geo_line, const Matrix< fltp08 > &transform=Matrix< fltp08 >(1.0)) |
| Extrudes a given polyline cross-section along a linework geometry, producing a triangulated solid stored in the geometry's Solid index channel. | |
| static void | ExtrudeRealThickness (Geometry &linework, const Matrix< fltp08 > &transform=Matrix< fltp08 >(1.0)) |
| Extrudes a flat or circular cross-section along a linework geometry based on its real thickness property (NDPG::thickness). | |
Provides static functions to extrude 2D/3D shapes along polyline paths, generating triangulated solid geometry.
The Extruder class supports multiple extrusion modes including flat ribbon extrusion (based on a geometry's real thickness property) and arbitrary polyline-along-path extrusion. It handles closed and open paths, sharp turns, vertical segments, and degenerate cases.
Author: Tyler Parke
Date: 2019-01-14
Definition at line 51 of file Extruder.h.
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inlinestatic |
Extrudes a cross-section polyline along an extrusion path, generating triangle indices and vertices for a solid mesh.
At each vertex of the extrusion path, the cross-section shape is projected onto a plane perpendicular to the path direction, taking into account the plane normal for orientation. Neighboring projections are connected with triangle pairs (quads split into two triangles).
The winding order of the output triangles matches the winding of the input shape. Reversing the shape vertices will reverse the output winding order.
| [in,out] | indices | Buffer to append triangle index triples into. Each Vector<3, uint04> represents one triangle's vertex indices into the vertices buffer. |
| [in,out] | vertices | Buffer to append the projected vertex positions into. |
| [in] | shape_to_extrude | The cross-section polyline to project at each path vertex. |
| [in] | extrude_path | The path polyline along which to extrude the shape. Must contain at least 2 vertices. |
| [in] | plane_normal | The "up" direction used to orient the cross-section relative to the path direction. Typically (0, 0, 1). |
| [in] | is_path_closed | Whether the extrusion path is closed (last vertex connects back to the first vertex). |
| [in] | transform | Optional transformation matrix applied to each projected cross-section vertex. Defaults to the identity matrix. |
< Stores the last vertices of the shape_to_extrude along the path
< Stores most recently calculated vertices of the shape_to_extrude along the path
< Tracks the last valid "right" vector for handling vertical segments
< The vertex we will draw our extrusion about
< Flag for sharp turns exceeding 90 degrees
< The direction vector of our projected shape
< The original direction of the shape (used to determine curvature)
< The vertex on the shape projected via the path direction
Definition at line 219 of file Extruder.h.
References Buffer< t_type, t_memory_manager >::add(), cast(), cross(), dot(), IsInvalid(), IsValid(), plane_normal, Polyline< t_dims, t_type, t_vertex >::segment(), Polyline< t_dims, t_type, t_vertex >::segmentCount(), sqrt(), transform, Polyline< t_dims, t_type, t_vertex >::vertex(), and Polyline< t_dims, t_type, t_vertex >::vertexCount().
Referenced by ExtrudePolylineAlongGeo().
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inlinestatic |
Extrudes a given polyline cross-section along a linework geometry, producing a triangulated solid stored in the geometry's Solid index channel.
Retrieves the plane normal and polylines from the linework, simplifies each polyline, and delegates to the templated Extrude() function. The resulting vertices and triangle indices are written back into the geometry's solid vertex and primitive buffers.
| [in] | linework | The linework geometry to extrude along. Must have GeometryType::e_linework. Its Solid index channel will be populated with the extruded result. |
| [in] | geo_line | The polyline cross-section to extrude along the linework path. |
| [in] | transform | Optional transformation matrix applied to the extrusion. Defaults to the identity matrix. |
Definition at line 125 of file Extruder.h.
References Geometry::addVertices(), e_linework, e_triangle, Extrude(), DesignObject::get(), Geometry::getGeometryType(), has_closed_primitive, Geometry::indexOffset(), IsInvalid(), Outline, plane_normal, Geometry::polylines(), Position, Geometry::primitiveIndexCount(), Geometry::setPrimitive(), Geometry::setPrimitiveMode(), Geometry::setPrimitiveRange(), Geometry::setSolidVertexCountValue(), Geometry::setSolidVertexOffsetValue(), Geometry::setSolidVertexReservedValue(), Geometry::setVertex(), Solid, Geometry::solidVertexOffset(), Geometry::solidVertexReservedCount(), transform, Geometry::updateModifiedTime(), Geometry::updatePrimitiveColumns(), Geometry::updateSolidVertexColumns(), Geometry::updateVertexColumns(), and Geometry::vertexCount().
Referenced by ExtrudeRealThickness().
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inlinestatic |
Extrudes a flat or circular cross-section along a linework geometry based on its real thickness property (NDPG::thickness).
The extrusion cross-section shape is determined by the geometry's ThicknessMode:
Upon completion, the geometry's Solid index channel is filled with the extruded vertices and triangle indices.
| [in] | linework | The linework geometry to extrude. Must have GeometryType::e_linework and a valid thickness > 0.0 set via NDPG::thickness. |
| [in] | transform | Optional transformation matrix applied to the extrusion cross-section. Defaults to the identity matrix. |
< Stores the cross-section shape to extrude along the path
Definition at line 72 of file Extruder.h.
References Polyline< t_dims, t_type, t_vertex >::add(), cast(), cos(), DEGREES, Geometry::e_circle, Geometry::e_circle_per_vertex, Geometry::e_flat_per_vertex, Geometry::e_flat_single, e_linework, Geometry::e_none, Geometry::e_pixel, ExtrudePolylineAlongGeo(), DesignObject::get(), Geometry::getGeometryType(), Geometry::indexOffset(), IsValid(), Geometry::mode(), Outline, Geometry::primitiveCount(), Geometry::setPrimitiveMode(), Geometry::setPrimitiveRange(), Geometry::setSolidVertexCountValue(), sin(), Solid, thickness, Geometry::thicknessMode(), and transform.