Update dxf__omar3_2.py

dxf__omar3_2.py

@@ -102,6 +102,40 @@ from xml.etree.ElementTree import Element, SubElement, tostring
 import re
 
 
+import ezdxf
+from ezdxf.bbox import extents
+
+def detect_scale_from_page(dxf_path, page_pixel_width, m_per_pixel_from_pdf):
+    """
+    Detects mm/px scale factor using the bounding box of the entire DXF content.
+    """
+    doc = ezdxf.readfile(dxf_path)
+
+    #getting the bounding box from modelspace
+    msp = doc.modelspace()
+    bbox_msp = extents(msp, fast=True)
+
+    if bbox_msp.has_data: #not empty
+        min_x, min_y, max_x, max_y = bbox_msp.extmin.x, bbox_msp.extmin.y, bbox_msp.extmax.x, bbox_msp.extmax.y
+    else:
+        # Try paperspace as a fallback
+        psp = doc.layout("Layout1")
+        bbox_psp = extents(psp, fast=True)
+        if not bbox_psp.has_data:
+            raise ValueError("No bounding box data found in modelspace or paperspace.")
+        min_x, min_y, max_x, max_y = bbox_psp.extmin.x, bbox_psp.extmin.y, bbox_psp.extmax.x, bbox_psp.extmax.y
+
+    # DXF width
+    dxf_width = max_x - min_x
+
+    # PDF width in m
+    pdf_metric_width = page_pixel_width * m_per_pixel_from_pdf
+
+    # Correction factor
+    correction_factor = dxf_width / pdf_metric_width
+    # final_scale = mm_per_pixel_from_pdf * correction_factor
+
+    return correction_factor
 
 """## Notes"""
 
@@ -117,6 +151,8 @@ This portion is used to convert vertices read from dxf to pixels in order to acc
 
 
 '''
+
+
 AllhatchesCodes=  {
   'Brick':'<</Length 172/Type/Pattern/PatternType 1/PaintType 1/TilingType 1/Resources<<>>/Matrix[1 0 0 1 0 0]/BBox[0 0 18 18]/XStep 18/YStep 18>>\nstream\n{fillcolor} rg 0 0 18 18 re f {strokecolor} RG 1 w -1 18 m 19.00001 18 l 9 18 m 9 9 l -1 9 m 19.00001 9 l 0 9 m 0 0 l -1 0 m 19.00001 0 l 18 0 m 18 9 l S \nendstream'
 ,
@@ -2094,6 +2130,19 @@ def mainFunctionDrawImgPdf(datadoc,dxfpath, dxfratio,SearchArray,pdfpath=0,pdfna
   width=abs(page2.mediabox[2])+abs(page2.mediabox[0])
   height=abs(page2.mediabox[3])+abs(page2.mediabox[1])
   print('mediabox', width , height)
+
+  correction_factor= detect_scale_from_page(dxfpath,width,dxfratio/1000)
+
+  factor=1
+  print('corr_factor',correction_factor)
+  if correction_factor <0.26: #if less than 0.25 then the dxf ratio is correeect, if greater then *2
+    factor=1
+    print('Ratio working: keep as it is')
+  else:
+    factor =2
+    print('Ratio was adjusted to be ur input ratio x2')
+
+  dxfratio=dxfratio*factor
   if page2.rotation!=0:
 
     rotationangle = page2.rotation