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Is there an option to add texture-coordinates?

See original GitHub issue

I really like this python package, as it is simple to use for a beginner like me. I have a small question: is there a way to add in texture coordinates? I have a few simple 3D objects consisting of polygons, each with a texture that needs to be mapped to it according to X and Y texture coordinates within a [0, 1] interval. Through the tutorials in the documentation I was able to create a sample 3D object and add the textures, but without the texture coordinates the objects look quite wrong. Do you have any suggestions that could help me?

Here is a small example:

from vtkplotter import *

# six polygons consisting of points with X, Y, and Z coordinates 

polygon_a = [
    [
        (371982, 5812893, 47),
        (371987, 5812889, 47),
        (371993, 5812896, 47),
        (371988, 5812900, 47),
        (371982, 5812893, 47),
    ],
    [[0, 1, 2, 3, 4]],
]
polygon_b = [
    [
        (371987, 5812889, 44),
        (371987, 5812889, 47),
        (371982, 5812893, 47),
        (371982, 5812893, 44),
        (371987, 5812889, 44),
    ],
    [[0, 1, 2, 3, 4]],
]

polygon_c = [
    [
        (371993, 5812896, 44),
        (371993, 5812896, 47),
        (371987, 5812889, 47),
        (371987, 5812889, 44),
        (371993, 5812896, 44),
    ],
    [[0, 1, 2, 3, 4]],
]
polygon_d = [
    [
        (371982, 5812893, 44),
        (371982, 5812893, 47),
        (371988, 5812900, 47),
        (371988, 5812900, 44),
        (371982, 5812893, 44),
    ],
    [[0, 1, 2, 3, 4]],
]
polygon_e = [
    [
        (371988, 5812900, 44),
        (371988, 5812900, 47),
        (371993, 5812896, 47),
        (371993, 5812896, 44),
        (371988, 5812900, 44),
    ],
    [[0, 1, 2, 3, 4]],
]
polygon_f = [
    [
        (371987, 5812889, 44),
        (371982, 5812893, 44),
        (371988, 5812900, 44),
        (371993, 5812896, 44),
        (371987, 5812889, 44),
    ],
    [[0, 1, 2, 3, 4]],
]

# texture coordinates of X, Y with interval [0, 1]

texture_coords_a = [
    0.993515,
    0.590665,
    0.583403,
    0.995886,
    0.001318,
    0.409513,
    0.411194,
    0.00281,
    0.993515,
    0.590665,
]
texture_coords_b = [
    0.814495,
    0.004965,
    0.986562,
    0.175202,
    0.172649,
    0.994582,
    0.004011,
    0.820917,
    0.814495,
    0.004965,
]
texture_coords_c = [
    0.992976,
    0.869131,
    0.867654,
    0.99699,
    0.009377,
    0.134356,
    0.138307,
    0.010153,
    0.992976,
    0.869131,
]
texture_coords_d = [
    0.007693,
    0.148416,
    0.15451,
    0.00767,
    0.994519,
    0.86112,
    0.844256,
    0.998197,
    0.007693,
    0.148416,
]
texture_coords_e = [
    0.997322,
    0.660826,
    0.89938,
    0.990736,
    0.006374,
    0.337104,
    0.106732,
    0.00748,
    0.997322,
    0.660826,
]

# textures for some of the polygons as .jpg-files

img_a = "tex_2962910"
img_b = "tex_2962971"
img_c = "tex_2962990"
img_d = "tex_2962933"
img_e = "tex_2962915"

a = Actor(polygon_a)
b = Actor(polygon_b)
c = Actor(polygon_c)
d = Actor(polygon_d)
e = Actor(polygon_e)
f = Actor(polygon_f)

a.texture(img_a)
b.texture(img_b)
c.texture(img_c)
d.texture(img_d)
e.texture(img_e)

polygons = actors.Assembly([a, b, c, d, e, f])

printc("getPolygons() format is    :", a.getPolygons(), c=3)
printc("getConnectivity() format is:", a.getConnectivity(), c=3)

show(polygons, Text(__doc__), viewup="z", axes=8)

Issue Analytics

State:
Created 4 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

2reactions

MarkusRosencommented, Nov 24, 2019

It works perfectly! Thank you very much for your quick help!

1reaction

marcomusycommented, Nov 21, 2019

Yep! Indeed I’ve already added the functionality - it was fairly trivial… Later today I will commit a new version, Thanks

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