forked from youen/assembly_handbook
Youen
2 years ago
4 changed files with 142 additions and 107 deletions
@ -0,0 +1,87 @@ |
|||||||
|
import FreeCAD as App |
||||||
|
import FreeCADGui as Gui |
||||||
|
|
||||||
|
class PartCachedView: |
||||||
|
def __init__(self, direction, x_direction, obj): |
||||||
|
self.direction = direction |
||||||
|
self.x_direction = x_direction |
||||||
|
self.doc_name = obj.Document.Name |
||||||
|
self.obj_name = obj.Name |
||||||
|
self.cached_lines = None |
||||||
|
|
||||||
|
def render(self): |
||||||
|
import numpy as np |
||||||
|
import os |
||||||
|
|
||||||
|
doc = App.getDocument(self.doc_name) #: :type doc: App.Document |
||||||
|
obj = doc.getObject(self.obj_name) #: :type obj: App.DocumentObject |
||||||
|
|
||||||
|
# create temporary view |
||||||
|
page = doc.addObject('TechDraw::DrawPage', 'TmpPage') |
||||||
|
if not page.KeepUpdated: page.KeepUpdated = True |
||||||
|
template = doc.addObject('TechDraw::DrawSVGTemplate', 'Template') |
||||||
|
import ahb_locator |
||||||
|
template.Template = os.path.join(os.path.dirname(ahb_locator.__file__), "resources/A4_Landscape_blank.svg") |
||||||
|
page.Template = template |
||||||
|
|
||||||
|
tmpView = doc.addObject('TechDraw::DrawViewPart', 'TmpView') |
||||||
|
tmpView.Direction = self.direction |
||||||
|
tmpView.XDirection = self.x_direction |
||||||
|
tmpView.Perspective = False |
||||||
|
tmpView.ScaleType = 'Custom' |
||||||
|
tmpView.Scale = 1.0 |
||||||
|
tmpView.XSource = [obj] |
||||||
|
page.addView(tmpView) |
||||||
|
tmpView.recompute() |
||||||
|
|
||||||
|
# copy edges relative to center |
||||||
|
tmpCenter = self.computePartCenter(tmpView, obj) |
||||||
|
|
||||||
|
# count lines |
||||||
|
tmpEdges = tmpView.getVisibleEdges() |
||||||
|
numLines = 0 |
||||||
|
for edge in tmpEdges: |
||||||
|
if not hasattr(edge.Curve, 'Degree') or edge.Curve.Degree == 1: numLines += 1 |
||||||
|
|
||||||
|
# store all lines in a packed array of floats (for each line: X1, Y1, X2, Y2) |
||||||
|
self.cached_lines = np.empty([numLines, 4]) |
||||||
|
lineIdx = 0 |
||||||
|
for edge in tmpEdges: |
||||||
|
if not hasattr(edge.Curve, 'Degree') or edge.Curve.Degree == 1: |
||||||
|
sx = 1.0 |
||||||
|
sy = -1.0 |
||||||
|
self.cached_lines[lineIdx] = [ |
||||||
|
edge.Vertexes[0].Point.x*sx - tmpCenter.x, |
||||||
|
edge.Vertexes[0].Point.y*sy - tmpCenter.y, |
||||||
|
edge.Vertexes[1].Point.x*sx - tmpCenter.x, |
||||||
|
edge.Vertexes[1].Point.y*sy - tmpCenter.y |
||||||
|
] |
||||||
|
lineIdx = lineIdx + 1 |
||||||
|
|
||||||
|
# delete temporary view |
||||||
|
doc.removeObject(page.Name) |
||||||
|
|
||||||
|
def computePartCenter(self, view, obj): |
||||||
|
if obj.TypeId == 'App::Link': |
||||||
|
partLink = obj |
||||||
|
objectCenterWorld = partLink.LinkPlacement.Matrix.multiply(partLink.LinkedObject.Shape.CenterOfGravity) |
||||||
|
else: |
||||||
|
objectCenterWorld = obj.Shape.CenterOfGravity |
||||||
|
|
||||||
|
vertId = view.makeCosmeticVertex3d(objectCenterWorld) |
||||||
|
vert = view.getCosmeticVertex(vertId) |
||||||
|
objectCenterView = vert.Point |
||||||
|
view.removeCosmeticVertex(vertId) |
||||||
|
return objectCenterView |
||||||
|
|
||||||
|
class PartsCache: |
||||||
|
part_views = {} |
||||||
|
|
||||||
|
def getPart2DView(self, view, obj): |
||||||
|
key = (view.Direction.x, view.Direction.y, view.Direction.z, view.XDirection.x, view.XDirection.y, view.XDirection.z, obj.Document.Name, obj.Name) |
||||||
|
part_view = self.part_views.get(key, None) |
||||||
|
if part_view is None: |
||||||
|
part_view = PartCachedView(view.Direction, view.XDirection, obj) |
||||||
|
part_view.render() |
||||||
|
self.part_views[key] = part_view |
||||||
|
return part_view |
Loading…
Reference in new issue