# trisurf_intersect

Below is a demonstration of the features of the `trisurf_intersect` function

## Contents

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

## Syntax

`[P]=trisurf_intersect(TRI1c,N1c,Vn1c,V1,TRI2c,N2c,Vn2c,V2,TRI3c,N3c,Vn3c,V3,d);`

## Description

This function computes the intersection of a triplet of triangulated surfaces.

## Examples

%Surface 1 n1=10; [X1,Y1]=meshgrid(linspace(-3,3,n1)); Z1=peaks(X1,Y1); Z1=Z1./max(abs(Z1(:))); [F1,V1]=grid2patch(X1,Y1,Z1); [F1,V1]=quad2tri(F1,V1,'a'); [N1,Vn1]=patchNormal(F1,V1); n2=10; [X2,Y2]=meshgrid(linspace(-3,3,n2)); Z2=peaks(X2,Y2); Z2=Z2./max(abs(Z2(:))); [F2,V2]=grid2patch(X2,Y2,Z2); [F2,V2]=quad2tri(F2,V2,'a'); R2=euler2DCM([0.4*pi,0,0]); V2=V2*R2; [N2,Vn2]=patchNormal(F2,V2); n3=10; [X3,Y3]=meshgrid(linspace(-3,3,n3)); Z3=peaks(X3,Y3); Z3=Z3./max(abs(Z3(:))); [F3,V3]=grid2patch(X3,Y3,Z3); [F3,V3]=quad2tri(F3,V3,'a'); R3=euler2DCM([0,0.45*pi,0]); V3=V3*R3; [N3,Vn3]=patchNormal(F3,V3);

[P]=trisurf_intersect(F1,N1,Vn1,V1,F2,N2,Vn2,V2,F3,N3,Vn3,V3,5);

cFigure; hold on; gpatch(F1,V1,'rw','k',0.5); gpatch(F2,V2,'gw','k',0.5); gpatch(F3,V3,'bw','k',0.5); plotV(P,'k.','markerSize',50) axisGeom; camlight headlight; gdrawnow

* GIBBON* www.gibboncode.org

*Kevin Mattheus Moerman*, [email protected]

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License: https://github.com/gibbonCode/GIBBON/blob/master/LICENSE

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

Copyright (C) 2006-2022 Kevin Mattheus Moerman and the GIBBON contributors

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

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