scaled down by 10

.gitignore

@@ -1,4 +1,5 @@
 __pycache__/
 backup/
 .vscode/
-render/
+render/
+galleries/

python3.9libs/convert_ldconfig_to_json.py

@@ -2,7 +2,6 @@
 import re
 import json
 
-
 resources = Path(__file__).resolve().parent.parent / 'resources' / 'ld_colors.json'
 ldconfig = '/home/stefan/ldraw/LDConfig.ldr'
 
@@ -12,13 +11,13 @@ def hex_to_rgb(hex_value):
     decimal_g = int(hex_value[2:4], 16)
     decimal_b = int(hex_value[4:6], 16)
 
-    # Convert decimal RGB to linear sRGB
-    linear_r = (decimal_r / 255) ** 2.2
-    linear_g = (decimal_g / 255) ** 2.2
-    linear_b = (decimal_b / 255) ** 2.2
+    # Convert decimal RGB to float
+    r = (decimal_r / 255) ** 2.2
+    g = (decimal_g / 255) ** 2.2
+    b = (decimal_b / 255) ** 2.2
 
     # Return as list
-    return [linear_r, linear_g, linear_b]
+    return [r, g, b]
 
 color_dict = {}
 
@@ -48,7 +47,6 @@ def hex_to_rgb(hex_value):
                 'rgb': rgb
             }
 
-
 with open(resources, 'w') as f:
     json.dump(color_dict, f, indent=4)
 

python3.9libs/ldraw.py

@@ -126,12 +126,12 @@ def place_part(color_code, part, geo_node):
 def transform_part(node, m4, geo_node):
     '''Transforms the part according to the ldraw matrix and adjusts for the houdini coord sys.'''
     # compensate for houdini coord sys
-    # convert from LDU to metric (1 LDU = 0.4mm), however we multiply by 100,
-    # so 1 brick is 0.8m wide and a minifigure is therefore *very roughly* human scale (3.84 meters tall)
-    # m4_part = hou.hmath.buildRotate(-180, 0, 0)
+    # convert from LDU to metric (1 LDU = 0.4mm), however we multiply by 10,
+    # so a 1x1 brick is 8 cm wide and a minifigure is therefore (38.4 cm tall)
+    # hopefully this is the right balance to get stable sims and stay in the safe floating point zone
     transform_dict = dict()
     transform_dict['rotate'] = (-180, 0, 0)
-    transform_dict['scale'] = (0.04, 0.04, 0.04)
+    transform_dict['scale'] = (0.004, 0.004, 0.004)
     m4_part = hou.hmath.buildTransform(transform_dict, transform_order="srt", rotate_order="xyz")
     m4 = m4*m4_part
     tr = m4.explode()
@@ -150,7 +150,7 @@ def transform_part(node, m4, geo_node):
 
     # compensate for houdini coord sys
     t.parm('rx').set(180)
-    t.parm('scale').set(25)
+    t.parm('scale').set(250)
     return t
 
 

resources/example_scene.ldr

@@ -8,7 +8,7 @@
 1 14 110 -88 -10 0 0 -1 0 1 0 1 0 0 3626b.dat
 1 1 80 -24 10 1 0 0 0 1 0 0 0 1 3298p90.dat
 1 13 10 -48 -10 0 0 1 0 1 0 -1 0 0 4599a.dat
-1 256 40 -24 0 0 0 1 0 1 0 -1 0 0 92409.dat
+1 256 40 -22 0 0 0 1 0 1 0 -1 0 0 92409.dat
 1 15 110 -56 -10 0 0 1 0 1 0 -1 0 0 2335p30.dat
 1 4 70 -24 10 1 0 0 0 1 0 0 0 1 2546p01.dat
 1 2 -10 -32 30 0 0 1 0 1 0 -1 0 0 3741a.dat