Below is a demonstration of the features of the tri2quad function

## Contents

```clear; close all; clc;
```

Tris func

## Examples

Plot settings

```fontSize=15;
```

Example triangulated surface

```[F,V]=stanford_bunny;
```

## Example 1: Converting a triangulated surface to a quandrangulated surface

Convert triangular faces to quadrilateral faces

```[Fq,Vq]=tri2quad(F,V);
```

Visualisation

```cFigure;
subplot(1,2,1);
title('Triangulation','FontSize',fontSize);
gpatch(F,V,'rw','k');
set(gca,'FontSize',fontSize);
axisGeom;

subplot(1,2,2);
gpatch(Fq,Vq,'gw','k');
set(gca,'FontSize',fontSize);
axisGeom;

drawnow;
```

## Example 2: Using incentres rather than triangle centres

Convert triangular faces to quadrilateral faces

```centerType=2;
```

Visualisation

```cFigure;
subplot(1,2,1);
title('Triangulation','FontSize',fontSize);
gpatch(F,V,'rw','k');
set(gca,'FontSize',fontSize);
axisGeom;

subplot(1,2,2);
gpatch(Fq,Vq,'gw','k');
set(gca,'FontSize',fontSize);
axisGeom;

drawnow;
```

GIBBON www.gibboncode.org

Kevin Mattheus Moerman, [email protected]

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GIBBON: The Geometry and Image-based Bioengineering add-On. A toolbox for image segmentation, image-based modeling, meshing, and finite element analysis.

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