How to apply a texture to a specific portion of a surface?

Hi,

I was wondering if there was any way to texturemap multiple images onto specific portions of a surface. So far I've used the following code to transform my x, y, and z data into a surface plot. Say I wanted to apply a texture to only the triangular face that forms when connecting the 3 vertices highlited in the figure in red (it doesn't necessarily have to be a triangle). I tried overlaying a new surface, replacing my x, y, z data with the 3 vertices, but that just plots a triangluar face without conforming to the dips and bends in the previous surface. Any idea of how I might go about this? Greatly appreciate all the help!

xmin = min(x);
xmax = max(x);
ymin = min(y);
ymax = max(y);

N = 500;  % Number of y values in uniform grid
M = 500;  % Number of x values in uniform grid
xu = linspace(xmin, xmax, M);         % Uniform x-coordinates
yu = linspace(ymin, ymax, N);         % Uniform y-coordinates
[X, Y] = meshgrid(xu, yu);            % Create meshes for xu and yu
F = TriScatteredInterp(x(:), y(:), z(:));  % Create interpolant
Z = F(X, Y);                          % Evaluate interpolant (N-by-M matrix)

s = surf(X, Y, Z);

[KSSV]

Apply texture? What you mean by applying texture? What you expect?

[Akku Appakonam]

Appreciate the reply. I mean applying an image to the surface like this:

except I would like it to be on just a portion of the figure.

Answer 1

[darova]

• Use inpolygon to copy region you want
• Create new surface
• Apply texture to object