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Faces in SVG (rudimentary) #461

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32 changes: 31 additions & 1 deletion splinepy/io/svg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,9 @@
_color_map = ModuleImportRaiser(_error_message_vedo_import, err)
_get_color = ModuleImportRaiser(_error_message_vedo_import, err)

from gustaf import Faces as _Faces
from gustaf import Vertices as _Vertices
from gustaf import Volumes as _Volumes

from splinepy.utils.log import debug as _debug
from splinepy.utils.log import warning as _warning
Expand Down Expand Up @@ -260,8 +262,11 @@ def _export_gustaf_object(
r, g, b = _get_color(gus_object.show_options.get("c", "red"))
a = gus_object.show_options.get("alpha", 1.0)
radius = gus_object.show_options.get("r", 0.1)
stroke_width = gus_object.show_options.get("lw", 0.1)

if isinstance(gus_object, _Vertices):
if isinstance(gus_object, _Vertices) and not isinstance(
gus_object, _Faces
):
data_name = gus_object.show_options.get("data", None)
if data_name is not None:
# Retrieve information on colors and values
Expand Down Expand Up @@ -330,6 +335,31 @@ def _export_gustaf_object(
dy=str(dx),
)
text_element.text = label
if isinstance(gus_object, _Faces) and not isinstance(gus_object, _Volumes):
svg_faces = _ET.SubElement(
svg_spline_element,
"g",
id="faces",
style=(
f"fill:none;stroke:{_rgb_2_hex(r,g,b)};stroke-opacity:{a};"
f"stroke-width:{stroke_width};stroke-linecap:round"
),
)

# Create a new face-group
for face in gus_object.faces:
edge_points = gus_object.vertices[[*face, face[0]], :]

_ET.SubElement(
svg_faces,
"polyline",
points=" ".join(
[
str(xx - box_min_x) + "," + str(box_max_y - xy)
for (xx, xy) in edge_points
]
),
)

else:
raise NotImplementedError(
Expand Down