diff --git a/code/idmapper/__init__.py b/code/idmapper/__init__.py
index 17610f2..e45d662 100644
--- a/code/idmapper/__init__.py
+++ b/code/idmapper/__init__.py
@@ -22,7 +22,7 @@
bl_info = {
"name": "IDMapper",
"author": "Michel Anders (varkenvarken)",
- "version": (0, 0, 20250816102007),
+ "version": (0, 0, 20250902164500),
"blender": (4, 4, 0),
"location": "View3D > Vertex Paint > Paint",
"description": "Create an idmap as a vertex color layer, grouping related faces by color",
@@ -187,6 +187,18 @@ class IDMapper(bpy.types.Operator):
size=4,
default=Vector((0, 0, 0, 1)),
)
+ number_of_ids: BoolProperty(
+ name="Number of ids",
+ description="Limit the number of distinct vertex colors assigned",
+ default=False,
+ )
+ colors: IntProperty(
+ name="Colors",
+ description="Maximum number of distinct vertex colors to use",
+ default=8,
+ min=1,
+ max=256,
+ )
method: EnumProperty(
items=[
@@ -203,8 +215,8 @@ class IDMapper(bpy.types.Operator):
default="HEURISTIC",
)
- # materialid : BoolProperty (name="By Material id", description="Calculate id map based on assigned materials (disabled when no materials present on mesh)", default=False)
- # facemapid : BoolProperty (name="By Face map", description="Calculate id map based on face map membership", default=False)
+ # materialid : BoolProperty (name="By Material id", description="Calculate id map based on assigned materials (disabled when no materials present on mesh)", default=False)
+ # facemapid : BoolProperty (name="By Face map", description="Calculate id map based on face map membership", default=False)
selectmaterial: BoolProperty(
name="Only material id",
description="Calculate id map only for faces with a material id (disabled when no materials present on mesh)",
@@ -290,6 +302,22 @@ def mapcolors(self, ob):
indexed_colors[-1] = list(
self.basecolor[:]
) # but the default color for non selected faces is defined by the user
+ # Optional: reduce number of distinct output colors
+ if self.number_of_ids:
+ ncolors = max(1, int(self.colors))
+ # limit by available non-default weights
+ ncolors = min(ncolors, len([w for w in set(weightmap.values()) if w != -1]))
+ try:
+ palette = color_set(ncolors)
+ except Exception:
+ palette = np.ones((ncolors, 4), dtype=np.float32)
+ for i in range(ncolors):
+ h = i / max(1, ncolors)
+ palette[i, :3] = [h, 1.0 - h, (0.5 + h) % 1.0]
+ remap_keys = sorted([w for w in indexed_colors.keys() if w != -1])
+ for i, w in enumerate(remap_keys):
+ c = palette[i % ncolors]
+ indexed_colors[w][:3] = [float(c[0]), float(c[1]), float(c[2])]
# facemaps are currently unsupported in 4.0, see https://projects.blender.org/blender/blender/issues/105317
# elif self.method == "FACEMAPID":
# fm = bm.faces.layers.face_map.verify()
@@ -510,6 +538,22 @@ def mapcolors(self, ob):
indexed_colors[-1] = list(
self.basecolor[:]
) # but the default color for non selected faces is defined by the user
+ # Optional: reduce number of distinct output colors
+ if self.number_of_ids:
+ ncolors = max(1, int(self.colors))
+ # limit by available non-default weights
+ ncolors = min(ncolors, len([w for w in set(weightmap.values()) if w != -1]))
+ try:
+ palette = color_set(ncolors)
+ except Exception:
+ palette = np.ones((ncolors, 4), dtype=np.float32)
+ for i in range(ncolors):
+ h = i / max(1, ncolors)
+ palette[i, :3] = [h, 1.0 - h, (0.5 + h) % 1.0]
+ remap_keys = sorted([w for w in indexed_colors.keys() if w != -1], key=lambda x: str(x))
+ for i, w in enumerate(remap_keys):
+ c = palette[i % ncolors]
+ indexed_colors[w][:3] = [float(c[0]), float(c[1]), float(c[2])]
for f, weight in weightmap.items():
color = indexed_colors[weight]
@@ -585,6 +629,10 @@ def draw(self, context):
row.prop(self, "selected")
if self.selected or self.method == "MATERIALID":
row.prop(self, "basecolor")
+ row = layout.row()
+ row.prop(self, "number_of_ids")
+ if self.number_of_ids:
+ row.prop(self, "colors", slider=True)
if self.method in {"HEURISTIC", "FACEMAPID"} or self.usedisplaycolor:
layout.prop(self, "seed")
@@ -1344,31 +1392,33 @@ def color_set(n):
# each line MUST have two tabs
paint_helptext = [
- "Left mouse paint",
- " S pick color",
- " K fill region",
- "Alt K fill same colored regions",
- " W smooth (ctrl respects seams)",
- "Alt W restricted smooth (ctrl respects seams)",
- " P paint selected faces",
- " F resize cursor (+mousewheel)",
- "Num + expand region (ctrl respects seams)",
- "Num - shrink region (ctrl respects seams)",
- "Num / flatten face colors",
- "Ctl Z undo",
- "Ctl 1-9 select from color list",
- "Ctl 0 roll color list up",
+ "Left mouse paint",
+ " S pick color",
+ " K fill region",
+ "Alt K fill same colored regions",
+ " W smooth (ctrl respects seams)",
+ "Alt W restricted smooth (ctrl respects seams)",
+ " P paint selected faces",
+ " F resize cursor (+mousewheel)",
+ "Num + expand region (ctrl respects seams)",
+ "Num - shrink region (ctrl respects seams)",
+ "Num / flatten face colors",
+ "Ctl Z undo",
+ "Ctl 1-9 select from color list",
+ "Ctl 0 roll color list up",
]
blf.size(0, 10)
top = 10 + 12 * len(paint_helptext)
-ph1 = [ht.split("\t")[0] for ht in paint_helptext]
-w1, _ = blf.dimensions(0, max(ph1, key=len))
-ph2 = [ht.split("\t")[1] for ht in paint_helptext]
-w2, _ = blf.dimensions(0, max(ph2, key=len))
-ph3 = [ht.split("\t")[2] for ht in paint_helptext]
-w3, _ = blf.dimensions(0, max(ph3, key=len))
+_parts = [ht.split("\t") for ht in paint_helptext]
+_parts = [(p + ["", "", ""])[:3] for p in _parts]
+ph1 = [p[0] for p in _parts]
+w1, _ = blf.dimensions(0, max(ph1, key=len) if ph1 else "")
+ph2 = [p[1] for p in _parts]
+w2, _ = blf.dimensions(0, max(ph2, key=len) if ph2 else "")
+ph3 = [p[2] for p in _parts]
+w3, _ = blf.dimensions(0, max(ph3, key=len) if ph3 else "")
left3 = w3 + 10
left2 = w2 + 4 + left3
left1 = w1 + 8 + left2
@@ -2147,11 +2197,11 @@ def orient2d(a, b, x, y):
def draw_tris_np(pixels, size, color, tris, step):
"""
- pixels a size x size x channels int32 ndarray
- size size of the image
- color N x length int32 ndarray (either length 3 or 4)
- tris a N x 3 x 2 float python list of lists of lists
- step a function thats is called with argument (1) every 100 triangles
+ pixels a size x size x channels int32 ndarray
+ size size of the image
+ color N x length int32 ndarray (either length 3 or 4)
+ tris a N x 3 x 2 float python list of lists of lists
+ step a function thats is called with argument (1) every 100 triangles
"""
XY = np.array([size - 1, size - 1], dtype=np.int32)
@@ -3235,4 +3285,4 @@ def unregister():
if __name__ == "__main__":
- register()
+ register()
\ No newline at end of file
diff --git a/docs/index.html b/docs/index.html
index 19aecda..2129fe2 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1551,6 +1551,8 @@ Base color
different restrictions and settings and later add (if black is chosen as a base color) or multiply (if
white) the two layers (See also Vertex Color
Merge)
+ Number of ids
+ When selected this will limit the number of vertex colors assigned, between 1 and 256. It will attempt to distribute the limited range evenly across the object.
Options
Similarity
This slider lets you specify how similar faces should be to be considered part of the