import os import tempfile from typing import Optional import FreeCADGui as Gui import FreeCAD as App class AHB_Render: def GetResources(self): return {"MenuText": "Render", "ToolTip": "Render current 3D view to a PNG image", "Pixmap": "" } def IsActive(self): return True def flatten_objects_tree(self, obj_list): result = [] for obj in obj_list: if obj.TypeId == 'Part::FeaturePython' and hasattr(obj, 'LinkedObject'): # variant link result.extend(self.flatten_objects_tree(obj.Group)) elif obj.TypeId in ['App::Link']: result.extend(self.flatten_objects_tree([obj.LinkedObject])) elif obj.TypeId in ['App::Part', 'App::DocumentObjectGroup']: result.extend(self.flatten_objects_tree(obj.Group)) elif obj.TypeId in ['Part::Feature', 'Part::FeaturePython', 'PartDesign::Body', 'PartDesign::CoordinateSystem', 'PartDesign::Line', 'Part::Mirroring', 'Part::Cut']: result.append(obj) if hasattr(obj, 'Group'): result.extend(self.flatten_objects_tree(obj.Group)) return result def renderable_objects(self): doc = App.activeDocument() return self.flatten_objects_tree(doc.Objects) def should_render(self, obj): return obj.TypeId in ['Part::Feature', 'Part::FeaturePython', 'PartDesign::Body', 'Part::Mirroring', 'Part::Cut'] def should_mask(self, obj): return False def set_render_lines(self, line_color = (0.0,0.0,0.0,0.0), background_color = (1.0,1.0,1.0,0.0), mask_color=(1.0,1.0,1.0)): doc = App.activeDocument() for obj in self.renderable_objects(): if self.should_render(obj): #print(obj.Name, obj.TypeId, hasattr(obj, 'LinkedObject'), obj) masked = self.should_mask(obj) obj.ViewObject.LineColor = line_color obj.ViewObject.DisplayMode = 'Flat Lines' if not masked else 'Shaded' obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.ShapeMaterial.SpecularColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.ShapeMaterial.EmissiveColor = background_color if not masked else mask_color obj.ViewObject.Visibility = True else: obj.ViewObject.Visibility = False def set_render_outlines(self): doc = App.activeDocument() step = 8 r = step g = step b = step for obj in self.renderable_objects(): if self.should_render(obj): masked = self.should_mask(obj) obj.ViewObject.DisplayMode = 'Shaded' obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.ShapeMaterial.SpecularColor = (0.0, 0.0, 0.0, 0.0) #obj.ViewObject.ShapeMaterial.EmissiveColor = (r/255.0, g/255.0, b/255.0, 0.0) if not masked else (1.0,1.0,1.0,0.0) obj.ViewObject.ShapeMaterial.EmissiveColor = (r/255.0, g/255.0, b/255.0, 0.0) if masked: obj.ViewObject.Visibility = False r = r + step if r >= 256 - step: r = step g = g + step if g >= 256 - step: g = step b = b + step if b >= 256 - step: b = step def reset_display(self): for obj in self.renderable_objects(): if self.should_render(obj): obj.ViewObject.LineColor = (0.0, 0.0, 0.0, 0.0) obj.ViewObject.DisplayMode = 'Flat Lines' obj.ViewObject.ShapeMaterial.AmbientColor = (0.3, 0.3, 0.3, 0.0) obj.ViewObject.ShapeMaterial.DiffuseColor = (1.0, 1.0, 1.0, 0.0) obj.ViewObject.ShapeMaterial.SpecularColor = (0.5, 0.5, 0.5, 0.0) obj.ViewObject.ShapeMaterial.EmissiveColor = (0.0, 0.0, 0.0, 0.0) else: #obj.ViewObject.Visibility = True pass def render(self, resolution, filename: str, line_color=(0.0, 0.0, 0.0, 0.0), fill_color=(1.0, 1.0, 1.0, 0.0), mask_stages_below: Optional[int] = None): import time from PIL import Image, ImageFilter render_start_time = time.perf_counter() temp_lines_file_name = tempfile.gettempdir() + "/ahb_temp_lines.png" temp_shapes_file_name = tempfile.gettempdir() + "/ahb_temp_shapes.png" #temp_lines_file_name = filename + "-lines.png" #temp_shapes_file_name = filename + "-shapes.png" # render lines in black, background in red, fill shapes in green # the green band contains the lines images, the red band contains the inverted alpha layer self.set_render_lines((0.0, 0.0, 0.0), (0.0, 1.0, 0.0), mask_color=(1.0, 0.0, 1.0)) Gui.ActiveDocument.ActiveView.saveImage(temp_lines_file_name, resolution[0]+2, resolution[1]+2, "#ff0000") self.set_render_outlines() Gui.ActiveDocument.ActiveView.saveImage(temp_shapes_file_name, (resolution[0]+2) * 2, (resolution[1]+2) * 2, "#ffffff") lines_bands = Image.open(temp_lines_file_name).split() lines = lines_bands[1] alpha_band = lines_bands[0].point(lambda p: 255 - p) shapes = Image.open(temp_shapes_file_name) outlines_start_time = time.perf_counter() outlines = None for x in range(0, 3): for y in range(0, 3): if x == 1 and y == 1: continue kernel = [0, 0, 0, 0, 1, 0, 0, 0, 0] kernel[y * 3 + x] = -1 partial_outlines = shapes.filter(ImageFilter.Kernel((3, 3), kernel, 1, 127)) partial_outlines = partial_outlines.point(lambda p: 255 if p == 127 else 0) partial_outlines = partial_outlines.convert("L") partial_outlines = partial_outlines.point(lambda p: 255 if p == 255 else 0) if outlines is None: outlines = partial_outlines else: outlines.paste(partial_outlines, None, partial_outlines.point(lambda p: 0 if p == 255 else 255)) # erase masked outlines outlines.paste(outlines.point(lambda p: 255), None, lines_bands[2].resize(outlines.size).point(lambda p: 255 if p == 255 else 0)) # outlines.save("/home/youen/dev_linux/vhelio-render/vhelio-outlines.png") # outlines = outlines.resize(lines.size, Image.BILINEAR) # lines.paste(outlines, None, outlines.point(lambda p: 255 - p)) lines_fullres = lines.resize(outlines.size, Image.NEAREST) lines_fullres.paste(outlines, None, outlines.point(lambda p: 255 if p == 0 else 0)) lines = lines_fullres.resize(lines.size, Image.BILINEAR) alpha_band_fullres = alpha_band.resize(outlines.size, Image.NEAREST) alpha_band_fullres.paste(outlines.point(lambda p: 255), None, outlines.point(lambda p: 255 if p == 0 else 0)) alpha_band = alpha_band_fullres.resize(lines.size, Image.BILINEAR) outlines_end_time = time.perf_counter() # colorize result = Image.merge("RGBA", [ lines.point(lambda p: int(fill_color[0] * p + line_color[0]*(255.0-p))), lines.point(lambda p: int(fill_color[1] * p + line_color[1] * (255.0 - p))), lines.point(lambda p: int(fill_color[2] * p + line_color[2] * (255.0 - p))), alpha_band ]) # crop 1px borders result = result.crop((1, 1, result.size[0] - 1, result.size[1] - 1)) result.save(filename) print("Rendered " + filename + " in " + str( round((outlines_end_time - render_start_time) * 1000) / 1000) + "s (outlines detection in " + str( round((outlines_end_time - outlines_start_time) * 1000) / 1000) + "s)") def Activated(self): import shutil from PIL import Image, ImageFilter import math from pivy import coin import re Image.MAX_IMAGE_PIXELS = 9999999999 # allow very high resolution images Gui.Selection.clearSelection() Gui.activeDocument().activeView().setCameraType("Orthographic") doc = App.activeDocument() doc_file_name: str = doc.FileName if doc_file_name is None: raise BaseException("You must save your FreeCAD document before rendering images") filename = os.path.splitext(doc_file_name)[0] + ".png" dir = os.path.dirname(filename) resolution = (6000,6000) self.render(resolution, filename) self.reset_display() img_full = Image.new('RGB', resolution, (255, 255, 255)) img = Image.open(filename) img_full.paste(img, None, img.getchannel('A')) img_full.save(filename) from ahb_command import AHB_CommandWrapper AHB_CommandWrapper.addGuiCommand('AHB_render', AHB_Render())