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import os
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import tempfile
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from typing import Optional
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import FreeCADGui as Gui
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import FreeCAD as App
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class AHB_Render:
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def GetResources(self):
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return {"MenuText": "Render",
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"ToolTip": "Render to images",
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"Pixmap": ""
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}
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def IsActive(self):
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return True
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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)):
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doc = App.activeDocument()
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for obj in doc.Objects:
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if obj.TypeId == 'Part::Feature':
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if 'AssemblyHandbook_Stage' in obj.PropertiesList:
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masked = mask_stages_below is not None and obj.AssemblyHandbook_Stage < mask_stages_below
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if 'AssemblyHandbook_RenderLines' in obj.PropertiesList and not obj.AssemblyHandbook_RenderLines:
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obj.ViewObject.LineColor = background_color
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else:
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obj.ViewObject.LineColor = line_color
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obj.ViewObject.DisplayMode = 'Flat Lines' if not masked else 'Shaded'
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obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
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obj.ViewObject.ShapeMaterial.EmissiveColor = background_color if not masked else mask_color
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def set_render_outlines(self, mask_stages_below: Optional[int] = None):
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doc = App.activeDocument()
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step = 8
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r = step
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g = step
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b = step
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for obj in doc.Objects:
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if obj.TypeId == 'Part::Feature':
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if 'AssemblyHandbook_Stage' in obj.PropertiesList:
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masked = mask_stages_below is not None and obj.AssemblyHandbook_Stage < mask_stages_below
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obj.ViewObject.DisplayMode = 'Shaded'
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obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
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obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0)
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obj.ViewObject.ShapeMaterial.SpecularColor = (0.0, 0.0, 0.0, 0.0)
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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)
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r = r + step
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if r >= 256 - step:
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r = step
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g = g + step
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if g >= 256 - step:
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g = step
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b = b + step
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if b >= 256 - step:
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b = step
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def reset_display(self):
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doc = App.activeDocument()
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for obj in doc.Objects:
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if obj.TypeId == 'Part::Feature':
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if 'AssemblyHandbook_Stage' in obj.PropertiesList:
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obj.ViewObject.LineColor = (0.0, 0.0, 0.0, 0.0)
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obj.ViewObject.DisplayMode = 'Flat Lines'
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obj.ViewObject.ShapeMaterial.AmbientColor = (0.3, 0.3, 0.3, 0.0)
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obj.ViewObject.ShapeMaterial.DiffuseColor = (1.0, 1.0, 1.0, 0.0)
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obj.ViewObject.ShapeMaterial.SpecularColor = (0.5, 0.5, 0.5, 0.0)
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obj.ViewObject.ShapeMaterial.EmissiveColor = (0.0, 0.0, 0.0, 0.0)
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workbench = Gui.getWorkbench("AssemblyHandbookWorkbench")
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workbench.context.onPartStageChanged(None)
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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):
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import time
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from PIL import Image, ImageFilter
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render_start_time = time.perf_counter()
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temp_lines_file_name = tempfile.gettempdir() + "/ahb_temp_lines.png"
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temp_shapes_file_name = tempfile.gettempdir() + "/ahb_temp_shapes.png"
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self.set_render_outlines(mask_stages_below=mask_stages_below)
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Gui.ActiveDocument.ActiveView.saveImage(temp_shapes_file_name, resolution[0] * 2, resolution[1] * 2, "#ffffff")
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# render lines in black, background in red, fill shapes in green
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# the green band contains the lines images, the red band contains the inverted alpha layer
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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))
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Gui.ActiveDocument.ActiveView.saveImage(temp_lines_file_name, resolution[0], resolution[1], "#ff0000")
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self.reset_display()
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lines_bands = Image.open(temp_lines_file_name).split()
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lines = lines_bands[1]
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alpha_band = lines_bands[0].point(lambda p: 255 - p)
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shapes = Image.open(temp_shapes_file_name)
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outlines_start_time = time.perf_counter()
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outlines = None
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for x in range(0, 3):
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for y in range(0, 3):
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if x == 1 and y == 1: continue
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kernel = [0, 0, 0, 0, 1, 0, 0, 0, 0]
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kernel[y * 3 + x] = -1
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partial_outlines = shapes.filter(ImageFilter.Kernel((3, 3), kernel, 1, 127))
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partial_outlines = partial_outlines.point(lambda p: 255 if p == 127 else 0)
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partial_outlines = partial_outlines.convert("L")
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partial_outlines = partial_outlines.point(lambda p: 255 if p == 255 else 0)
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if outlines is None:
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outlines = partial_outlines
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else:
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outlines.paste(partial_outlines, None, partial_outlines.point(lambda p: 0 if p == 255 else 255))
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# outlines.save("/home/youen/dev_linux/vhelio-render/vhelio-outlines.png")
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# outlines = outlines.resize(lines.size, Image.BILINEAR)
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# lines.paste(outlines, None, outlines.point(lambda p: 255 - p))
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lines_fullres = lines.resize(outlines.size, Image.NEAREST)
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lines_fullres.paste(outlines, None, outlines.point(lambda p: 0 if p == 255 else 255))
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lines = lines_fullres.resize(lines.size, Image.BILINEAR)
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alpha_band_fullres = alpha_band.resize(outlines.size, Image.NEAREST)
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alpha_band_fullres.paste(outlines.point(lambda p: 255), None, outlines.point(lambda p: 0 if p == 255 else 255))
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alpha_band = alpha_band_fullres.resize(lines.size, Image.BILINEAR)
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outlines_end_time = time.perf_counter()
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# colorize
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result = Image.merge("RGBA", [
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lines.point(lambda p: int(fill_color[0] * p + line_color[0]*(255.0-p))),
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lines.point(lambda p: int(fill_color[1] * p + line_color[1] * (255.0 - p))),
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lines.point(lambda p: int(fill_color[2] * p + line_color[2] * (255.0 - p))),
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alpha_band
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])
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result.save(filename)
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print("Rendered " + filename + " in " + str(
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round((outlines_end_time - render_start_time) * 1000) / 1000) + "s (outlines detection in " + str(
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round((outlines_end_time - outlines_start_time) * 1000) / 1000) + "s)")
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def Activated(self):
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import shutil
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from PIL import Image, ImageFilter
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workbench = Gui.getWorkbench("AssemblyHandbookWorkbench")
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doc = App.activeDocument()
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doc_file_name: str = doc.FileName
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if doc_file_name is None:
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raise BaseException("You must save your FreeCAD document before rendering images")
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filename = os.path.splitext(doc_file_name)[0] + ".png"
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dir = os.path.dirname(filename)
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workbench.context.setAllStagesVisible(True)
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self.render((2000, 2000), filename)
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render_stages = True
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if render_stages:
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shutil.rmtree(dir + "/stages", ignore_errors=True)
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os.makedirs(dir + "/stages", exist_ok=True)
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all_stages = workbench.context.getAllStages()
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prev_stage_id: Optional[int] = None
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for stage_id in all_stages:
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stage_name = str(stage_id)
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while len(stage_name) < 6:
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stage_name = "0" + stage_name
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resolution = (2000, 2000)
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if prev_stage_id is not None:
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workbench.context.setActiveStage(prev_stage_id)
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workbench.context.setAllStagesVisible(False)
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self.render(resolution, dir + "/stages/" + stage_name + "-bg.png", (0.5, 0.5, 0.5), (0.75,0.75,0.75))
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workbench.context.setActiveStage(stage_id)
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workbench.context.setAllStagesVisible(False)
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self.render(resolution, dir + "/stages/" + stage_name + ".png", mask_stages_below=stage_id)
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if prev_stage_id is not None:
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# merge previous stages background with new stage
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bg = Image.open(dir + "/stages/" + stage_name + "-bg.png")
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os.remove(dir + "/stages/" + stage_name + "-bg.png")
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new = Image.open(dir + "/stages/" + stage_name + ".png")
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bg.paste(new, None, new.getchannel('A'))
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bg.save(dir + "/stages/" + stage_name + ".png")
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if prev_stage_id is not None:
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pass
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prev_stage_id = stage_id
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workbench.context.setAllStagesVisible(True)
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from ahb_command import AHB_CommandWrapper
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AHB_CommandWrapper.addGuiCommand('AHB_render', AHB_Render())
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