rasterized image automatic alignment with TechDraw view (wip)

ahb_techdraw_extensions.py

@@ -121,7 +121,11 @@ class TechDrawExtensions:
 				page.Views = new_views_list
 				
 				image_file_name = doc.FileName.replace('.FCStd', '') + '_raster/' + view.Name + '.png'
-				self.rasterizeView(view, image_file_name)
+				image_scale = self.rasterizeView(view, image_file_name)
+				image.ImageFile = ""
+				image.Scale = image_scale
+				image.X = view.X #- image_center[0]/10.0*image_scale
+				image.Y = view.Y #+ image_center[1]/10.0*image_scale
 				image.ImageFile = image_file_name # TODO: see if it's possible to set a relative path
 				image.recompute()
 			else:
@@ -230,6 +234,7 @@ class TechDrawExtensions:
 	def rasterizeView(self, view, image_file_name):
 		from pivy import coin
 		import os
+		from PIL import Image, ImageDraw, ImageChops
 		
 		print('Rasterizing ' + view.Label + " to " + image_file_name + "...")
 		
@@ -257,10 +262,56 @@ class TechDrawExtensions:
 		
 		docView.fitAll()
 		
+		viewVolume = cam.getViewVolume(0.0)
+		
 		docView.saveImage(image_file_name, 4096, 4096, "#ffffff")
 		
+		def project3dPointToViewport(p3d):
+			YDirection = view.Direction.cross(view.XDirection)
+			sb_offset = viewVolume.projectToScreen(coin.SbVec3f(0,0,0))
+			offset = App.Vector(sb_offset[0], sb_offset[1], 0)
+			#print('offset', offset) 
+			p2d = App.Vector(view.XDirection.dot(p3d)/viewVolume.getWidth() + offset.x, YDirection.dot(p3d)/viewVolume.getHeight() + offset.y, 0)
+			return p2d
+		
+		p2dA = project3dPointToViewport(App.Vector(0,0,0))
+		p2dB = project3dPointToViewport(view.XDirection)
+		# page_mm = (p2dB.x - p2dA.x) * resX / 100 * PNGscale = viewScale
+		imageScale = view.Scale / (p2dB.x - p2dA.x) / 4096.0 * 10
+		print('imageScale', imageScale)
+		
+		with Image.open(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 = project3dPointToViewport(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(image_file_name)
+		
 		App.closeDocument(doc.Name)
 		
+		return imageScale
+	
 	def updateBalloonCursor(self, view):
 		selected_balloons = []
 		for obj in Gui.Selection.getSelection():
@@ -406,7 +457,7 @@ class TechDrawExtensions:
 		view = balloon.SourceView
 		obj = self.getBalloonSourcePart(balloon)
 		
-		partDisplayName = self.getPartDisplayName(obj)
+		partDisplayName = 'Inconnu' if obj is None else self.getPartDisplayName(obj)
 		
 		objectCenterView = workbench.techDrawExtensions.computePartCenter(view, obj)