MeshFactory

Namespace: DISP3DLIB  ·  Library: 3D Display Library

#include <disp3D/meshfactory.h>

class DISP3DLIB::MeshFactory

Static factory for procedural mesh primitives.

All methods return fully constructed BrainSurface objects ready for rendering. This eliminates duplicated icosahedron / plate / barbell code that was spread across BrainView::onRowsInserted.

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Public Methods

MeshFactory()

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Static Methods

createSphere(center, radius, color, subdivisions)

Create a subdivided icosahedron sphere.

Parameters:

• center : const QVector3D & World-space center of the sphere.

• radius : float Radius in meters.

• color : const QColor & FsSurface color.

• subdivisions : int Number of subdivision passes (0 = 20 tris, 1 = 80 tris).

Returns:

• std::shared_ptr< BrainSurface > — Shared pointer to the created BrainSurface.

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createPlate(center, orientation, color, size)

Create a thin oriented rectangular plate (used for MEG magnetometers).

Parameters:

• center : const QVector3D & World-space center.

• orientation : const QMatrix4x4 & 3×3 rotation embedded in a 4×4 matrix (coil_trans).

• color : const QColor & FsSurface color.

• size : float Side length in meters (plate is size × size × thin).

Returns:

• std::shared_ptr< BrainSurface > — Shared pointer to the created BrainSurface.

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createBarbell(center, orientation, color, size)

Create a barbell shape (two spheres connected by a thin rod), used for MEG gradiometers.

Parameters:

• center : const QVector3D & World-space center.

• orientation : const QMatrix4x4 & 3×3 rotation embedded in a 4×4 matrix (coil_trans).

• color : const QColor & FsSurface color.

• size : float Overall size scale in meters.

Returns:

• std::shared_ptr< BrainSurface > — Shared pointer to the created BrainSurface.

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createBatchedSpheres(positions, radius, color, subdivisions)

Create a batched mesh of identical spheres at multiple positions (used for source space points, digitizer points, etc.).

All spheres are merged into a single BrainSurface for efficient rendering.

Parameters:

• positions : const QVector< QVector3D > & World-space positions for each sphere.

• radius : float Sphere radius in meters.

• color : const QColor & Sphere color.

• subdivisions : int Number of subdivision passes per sphere.

Returns:

• std::shared_ptr< BrainSurface > — Shared pointer to the batched BrainSurface.

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createCylinder(from, to, radius, color, sides)

Create a cylinder between two world-space endpoints.

Parameters:

• from : const QVector3D & Start point (metres).

• to : const QVector3D & End point (metres).

• radius : float Cylinder radius (metres).

• color : const QColor & Surface color.

• sides : int Number of sides around the circumference (min 3).

Returns:

• std::shared_ptr< BrainSurface > — Shared pointer to the created BrainSurface.

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sphereVertexCount(subdivisions)

Number of vertices in a subdivided icosahedron (for picking calculations).

Parameters:

• subdivisions : int Number of subdivision passes.

Returns:

• int — Number of vertices.

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Authors of this file

• Christoph Dinh <christoph.dinh@mne-cpp.org>