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 to images", "Pixmap": "" } def IsActive(self): return True 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_stages_below: Optional[int] = None, mask_color=(1.0,1.0,1.0)): doc = App.activeDocument() for obj in doc.Objects: if obj.TypeId == 'Part::Feature': if 'AssemblyHandbook_Stage' in obj.PropertiesList: masked = mask_stages_below is not None and obj.AssemblyHandbook_Stage < mask_stages_below if 'AssemblyHandbook_RenderLines' in obj.PropertiesList and not obj.AssemblyHandbook_RenderLines: obj.ViewObject.LineColor = background_color else: 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.EmissiveColor = background_color if not masked else mask_color def set_render_outlines(self, mask_stages_below: Optional[int] = None): doc = App.activeDocument() step = 8 r = step g = step b = step for obj in doc.Objects: if obj.TypeId == 'Part::Feature': if 'AssemblyHandbook_Stage' in obj.PropertiesList: masked = mask_stages_below is not None and obj.AssemblyHandbook_Stage < mask_stages_below 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) 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): doc = App.activeDocument() for obj in doc.Objects: if obj.TypeId == 'Part::Feature': if 'AssemblyHandbook_Stage' in obj.PropertiesList: 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) workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") workbench.context.onPartStageChanged(None) 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" self.set_render_outlines(mask_stages_below=mask_stages_below) Gui.ActiveDocument.ActiveView.saveImage(temp_shapes_file_name, resolution[0] * 2, resolution[1] * 2, "#ffffff") # 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_stages_below=mask_stages_below, mask_color=(1.0,0.0,0.0)) Gui.ActiveDocument.ActiveView.saveImage(temp_lines_file_name, resolution[0], resolution[1], "#ff0000") self.reset_display() 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)) # 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: 0 if p == 255 else 255)) 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: 0 if p == 255 else 255)) 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 ]) 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 workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") 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) workbench.context.setAllStagesVisible(True) self.render((2000, 2000), filename) render_stages = True if render_stages: shutil.rmtree(dir + "/stages", ignore_errors=True) os.makedirs(dir + "/stages", exist_ok=True) all_stages = workbench.context.getAllStages() prev_stage_id: Optional[int] = None for stage_id in all_stages: stage_name = str(stage_id) while len(stage_name) < 6: stage_name = "0" + stage_name resolution = (2000, 2000) if prev_stage_id is not None: workbench.context.setActiveStage(prev_stage_id) workbench.context.setAllStagesVisible(False) self.render(resolution, dir + "/stages/" + stage_name + "-bg.png", (0.5, 0.5, 0.5), (0.75,0.75,0.75)) workbench.context.setActiveStage(stage_id) workbench.context.setAllStagesVisible(False) self.render(resolution, dir + "/stages/" + stage_name + ".png", mask_stages_below=stage_id) if prev_stage_id is not None: # merge previous stages background with new stage bg = Image.open(dir + "/stages/" + stage_name + "-bg.png") os.remove(dir + "/stages/" + stage_name + "-bg.png") new = Image.open(dir + "/stages/" + stage_name + ".png") bg.paste(new, None, new.getchannel('A')) bg.save(dir + "/stages/" + stage_name + ".png") if prev_stage_id is not None: pass prev_stage_id = stage_id workbench.context.setAllStagesVisible(True) from ahb_command import AHB_CommandWrapper AHB_CommandWrapper.addGuiCommand('AHB_render', AHB_Render())