Update chroma/chroma/utility/chroma.py

chroma/chroma/utility/chroma.py

@@ -30,7 +30,9 @@ from chroma.layers.structure import backbone
 def letter_to_point_cloud(
     letter="G",
     width_pixels=35,
-    font="FreeMono.ttf",
+    font = os.path.join(
+        os.path.dirname(chroma.__path__[0]), "./assets/LiberationSans-Regular.ttf"
+    ),
     depth_ratio=0.15,
     fontsize_ratio=1.2,
     stroke_width=1,
@@ -40,26 +42,26 @@ def letter_to_point_cloud(
     """Build a point cloud from a letter"""
     depth = int(depth_ratio * width_pixels)
     fontsize = int(fontsize_ratio * width_pixels)
-
-    font = ImageFont.truetype("arial.ttf", 15)
-    ascent, descent = font.getmetrics()
-    text_width = font.getmask(letter).getbbox()[2]
-    text_height = font.getmask(letter).getbbox()[3] + descent
-
-    margin_width = int(text_width * margin)
-    margin_height = int(text_height * margin)
-    image_size = [text_width + margin_width, text_height + margin_height]
-
-    image = Image.new("RGBA", image_size, (255, 255, 255))
-    draw = ImageDraw.Draw(image)
-    draw.text(
-        (margin_width // 2, margin_height // 2),
-        letter,
-        (0, 0, 0),
-        font=font,
-        stroke_width=stroke_width,
-        stroke_fill="black",
-    )
+    with ImageFont.truetype(font_path, size) as font:
+    # font = ImageFont.truetype("arial.ttf", 15)
+        ascent, descent = font.getmetrics()
+        text_width = font.getmask(letter).getbbox()[2]
+        text_height = font.getmask(letter).getbbox()[3] + descent
+    
+        margin_width = int(text_width * margin)
+        margin_height = int(text_height * margin)
+        image_size = [text_width + margin_width, text_height + margin_height]
+    
+        image = Image.new("RGBA", image_size, (255, 255, 255))
+        draw = ImageDraw.Draw(image)
+        draw.text(
+            (margin_width // 2, margin_height // 2),
+            letter,
+            (0, 0, 0),
+            font=font,
+            stroke_width=stroke_width,
+            stroke_fill="black",
+        )
 
     A = np.asarray(image).mean(-1)
     A = A < 100.0