scripts-blender/addons/brushstroke_tools/settings.py

@@ -134,8 +134,8 @@ def set_brush_style(self, value):
     ng_name = f'BSBST-brushstroke.{value}'
     ng = utils.ensure_node_group(ng_name, [bs for bs in addon_prefs.brush_styles if bs.name==value][0].filepath)
 
-    #if ng.preview:
-    #    utils.set_preview(ng.preview.image_pixels_float)
+    # if ng.preview:
+    #    utils.set_preview(ng.preview.image_pixels_float, ng.preview.image_size[:])
 
     node = self.node_tree.nodes['Brush Style']
     node_prev_inputs = [input.name for input in node.inputs]

scripts-blender/addons/brushstroke_tools/utils.py

@@ -530,28 +530,33 @@ def round_n(val, n):
     """
     return round(val, n-int(math.floor(math.log10(abs(val))))-1)
 
-def set_preview(pixels):
+def set_preview(pixels, size = (256, 256)):
     if not pixels:
         return
     preview_name = 'BSBST-preview'
     preview_img = bpy.data.images.get(preview_name)
+    if preview_img:
+        if not len(preview_img.pixels) == len(pixels):
+            bpy.data.images.remove(preview_img)
+            preview_img = None
     if not preview_img:
-        preview_img = bpy.data.images.new(preview_name, width=256, height=256)
-    if not len(preview_img.pixels) == len(pixels):
-        return # TODO handle different sizes
+        preview_img = bpy.data.images.new(preview_name, width=size[0], height=size[1])
     
     preview_texture = bpy.data.textures.get(preview_name)
-    if preview_texture:
-        bpy.data.textures.remove(preview_texture)
-    preview_texture = bpy.data.textures.new(name=preview_name, type="IMAGE")
+    if not preview_texture:
+        preview_texture = bpy.data.textures.new(name=preview_name, type="IMAGE")
+        settings = bpy.context.scene.BSBST_settings
+        settings.preview_texture = preview_texture
     preview_texture.extension = 'EXTEND'
+    preview_texture.crop_max_x = size[1]/size[0]
     preview_texture.image = preview_img
     
-    settings = bpy.context.scene.BSBST_settings
-    settings.preview_texture = preview_texture
-    
     preview_img.pixels.foreach_set(numpy.array(pixels, dtype=numpy.float32))
 
+    # TODO pack image
+    # TODO delete pre-save
+    # TODO set height of preview region
+
 def register():
     bpy.app.handlers.depsgraph_update_post.append(refresh_preset)