import FreeCAD as App import FreeCADGui as Gui class RasterView: def __init__(self, view): self.source_view = view doc = view.Document self.image_file_name = doc.FileName.replace('.FCStd', '') + '_raster/' + view.Name + '.png' def init_image_projection(self): doc = self.source_view.Document image_name = self.source_view.Label + "_raster" image = doc.getObject(image_name) if image is None: return False self.image_view = image if image.Assembly_handbook_ViewVolumeWidth > 0: self._precompute_image_projection() return True return False def init_image(self): workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") #: :type workbench: AssemblyHandbookWorkbench doc = self.source_view.Document page = workbench.techDrawExtensions.getViewPage(self.source_view) image_name = self.source_view.Label + "_raster" image = doc.getObject(image_name) if image is None: image = doc.addObject('TechDraw::DrawViewImage', image_name) image.addProperty("App::PropertyFloat", "Assembly_handbook_ViewVolumeWidth", "Assembly_handbook") image.addProperty("App::PropertyFloat", "Assembly_handbook_ViewVolumeHeight", "Assembly_handbook") image.addProperty("App::PropertyFloat", "Assembly_handbook_ViewVolumeDepth", "Assembly_handbook") image.addProperty("App::PropertyVector", "Assembly_handbook_ViewVolumeOffset", "Assembly_handbook") if not image in page.Views: page.addView(image) new_views_list = page.Views new_views_list.remove(image) view_idx = new_views_list.index(self.source_view) new_views_list.insert(view_idx, image) page.Views = new_views_list self.image_view = image if image.Assembly_handbook_ViewVolumeWidth > 0: self._precompute_image_projection() def _precompute_image_projection(self): YDirection = self.source_view.Direction.cross(self.source_view.XDirection) self.image_x_dir = self.source_view.XDirection / self.image_view.Assembly_handbook_ViewVolumeWidth self.image_y_dir = YDirection / self.image_view.Assembly_handbook_ViewVolumeHeight self.image_z_dir = self.source_view.Direction / self.image_view.Assembly_handbook_ViewVolumeDepth self.image_x_dir_inv = self.source_view.XDirection * self.image_view.Assembly_handbook_ViewVolumeWidth self.image_y_dir_inv = YDirection * self.image_view.Assembly_handbook_ViewVolumeHeight self.image_z_dir_inv = self.source_view.Direction * self.image_view.Assembly_handbook_ViewVolumeDepth def project3DPointToImageView(self, point3d): offset = self.image_view.Assembly_handbook_ViewVolumeOffset return App.Vector(self.image_x_dir.dot(point3d) + offset.x, self.image_y_dir.dot(point3d) + offset.y, self.image_z_dir.dot(point3d) + offset.z) def project3DPointToSourceView(self, point3d): offset = self.image_view.Assembly_handbook_ViewVolumeOffset offset = App.Vector((offset.x-0.5) * self.image_view.Assembly_handbook_ViewVolumeWidth, (offset.y-0.5) * self.image_view.Assembly_handbook_ViewVolumeHeight, (offset.z-0.5) * self.image_view.Assembly_handbook_ViewVolumeDepth) #image_view_point = App.Vector(self.image_x_dir.dot(point3d), self.image_y_dir.dot(point3d), self.image_z_dir.dot(point3d)) #return App.Vector(image_view_point.x * self.image_view.Assembly_handbook_ViewVolumeWidth, image_view_point.y * self.image_view.Assembly_handbook_ViewVolumeHeight, 0) YDirection = self.source_view.Direction.cross(self.source_view.XDirection) return App.Vector(self.source_view.XDirection.dot(point3d) + offset.x, YDirection.dot(point3d) + offset.y, self.image_z_dir.dot(point3d) + offset.z) def projectImageViewPointTo3D(self, point2d): offset = self.image_view.Assembly_handbook_ViewVolumeOffset p = point2d - offset return self.image_x_dir_inv * p.x + self.image_y_dir_inv * p.y + self.image_z_dir_inv * p.z def render(self): from pivy import coin import os from PIL import Image, ImageDraw, ImageChops view = self.source_view self.init_image() print('Rasterizing ' + view.Label + " to " + self.image_file_name + "...") dir = os.path.dirname(self.image_file_name) if not os.path.exists(dir): os.makedirs(dir) doc = App.newDocument('tmp_raster', hidden=False, temp=False) for part in view.XSource: link = doc.addObject('App::Link', part.Name) link.Label = part.Label if part.TypeId == 'App::Link': link.LinkedObject = part.LinkedObject link.Placement = part.Placement else: link.LinkedObject = part docView = Gui.getDocument(doc.Name).mdiViewsOfType('Gui::View3DInventor')[0] cam = docView.getCameraNode() rot = coin.SbRotation(coin.SbVec3f(1,0,0), coin.SbVec3f(view.XDirection.x,view.XDirection.y,view.XDirection.z)) rot *= coin.SbRotation(coin.SbVec3f(0,0,1), coin.SbVec3f(view.Direction.x,view.Direction.y,view.Direction.z)) cam.orientation.setValue(rot) docView.fitAll() viewVolume = cam.getViewVolume(0.0) self.image_view.Assembly_handbook_ViewVolumeWidth = viewVolume.getWidth() self.image_view.Assembly_handbook_ViewVolumeHeight = viewVolume.getHeight() self.image_view.Assembly_handbook_ViewVolumeDepth = viewVolume.getDepth() docView.saveImage(self.image_file_name, 4096, 4096, "#ffffff") with Image.open(self.image_file_name) as img: original_size = img.size bg = Image.new(img.mode, img.size, '#ffffff') # fills an image with the background color diff = ImageChops.difference(img, bg) # diff between the actual image and the background color bbox = diff.getbbox() # finds border size (non-black portion of the image) #print(bbox) #image_center = (bbox[0] + (bbox[2] - bbox[0])/2 - img.size[0]/2, bbox[1] + (bbox[3] - bbox[1])/2 - img.size[1]/2) #print(image_center) img = img.crop(bbox) draw = ImageDraw.Draw(img) def debugPoint(p3d): p2d = self.project3DPointToImageView(p3d) pp = App.Vector(p2d.x * original_size[0] - bbox[0], (1.0-p2d.y) * original_size[1] - bbox[1]) #print('pp', pp) len = 100 draw.line([(pp.x, pp.y-len), (pp.x, pp.y+len)], fill=128, width = 7) draw.line([(pp.x-len, pp.y), (pp.x+len, pp.y)], fill=128, width = 7) #debugPoint(App.Vector(-12.5, 37.5, 25.0)) #debugPoint(App.Vector(-12.5, -1387.5, 25.0)) #debugPoint(App.Vector(131.23702882966705, -655.0000021095163, 145.21130178331268)) img.save(self.image_file_name) sb_offset = viewVolume.projectToScreen(coin.SbVec3f(0,0,0)) crop_offset = App.Vector(((bbox[0] + bbox[2])/2 - original_size[0]/2)/original_size[0], ((bbox[1] + bbox[3])/2 - original_size[1]/2)/original_size[1], 0) self.image_view.Assembly_handbook_ViewVolumeOffset = App.Vector(sb_offset[0] - crop_offset.x, sb_offset[1] + crop_offset.y, sb_offset[2]) self._precompute_image_projection() p2dA = self.project3DPointToImageView(App.Vector(0,0,0)) p2dB = self.project3DPointToImageView(view.XDirection) imageScale = view.Scale / (p2dB.x - p2dA.x) / original_size[0] * 10 #print('imageScale', imageScale) App.closeDocument(doc.Name) image = self.image_view image.ImageFile = "" image.Scale = imageScale image.X = view.X image.Y = view.Y image.ImageFile = self.image_file_name # TODO: see if it's possible to set a relative path image.recompute()