From d44b7b7442b04918eddc93a9c53ee807da6032cb Mon Sep 17 00:00:00 2001
From: drochalo <diogo.lopes@opencascade.com>
Date: Fri, 27 Oct 2023 17:18:25 +0100
Subject: [PATCH]  0027832: Visualization - Scaled zbuffer trihedron

Code cleanup and test case modified.
---
 src/Graphic3d/Graphic3d_TransformPers.hxx |  4 ++--
 tests/v3d/trihedron/bug27832              | 12 +++++++++---
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/Graphic3d/Graphic3d_TransformPers.hxx b/src/Graphic3d/Graphic3d_TransformPers.hxx
index ab444de9a5..4475599544 100644
--- a/src/Graphic3d/Graphic3d_TransformPers.hxx
+++ b/src/Graphic3d/Graphic3d_TransformPers.hxx
@@ -415,9 +415,9 @@ void Graphic3d_TransformPers::Apply (const Handle(Graphic3d_Camera)& theCamera,
     Standard_Real anAxialX = anAxialScale.X();
     Standard_Real anAxialY = anAxialScale.Y();
     Standard_Real anAxialZ = anAxialScale.Z();
-    if (anAxialX > 0 && anAxialY > 0 && anAxialZ > 0)
+    if (anAxialX > 0.0 && anAxialY > 0.0 && anAxialZ > 0.0)
     {
-      Graphic3d_TransformUtils::Scale(aWorldView, 1.0 / anAxialX, 1.0 / anAxialY, 1.0 / anAxialZ);
+      Graphic3d_TransformUtils::Scale (aWorldView, 1.0 / anAxialX, 1.0 / anAxialY, 1.0 / anAxialZ);
     }
     
     Graphic3d_TransformUtils::Translate (aWorldView, aCenter.X(), aCenter.Y(), aCenter.Z());
diff --git a/tests/v3d/trihedron/bug27832 b/tests/v3d/trihedron/bug27832
index 9778064a6e..174aefee8d 100644
--- a/tests/v3d/trihedron/bug27832
+++ b/tests/v3d/trihedron/bug27832
@@ -1,16 +1,22 @@
 puts "========"
-puts "0025340: 0027832: Visualization - Scaled zbuffer trihedron"
+puts "0027832: Visualization - Scaled zbuffer trihedron"
 puts "========"
 puts ""
 
-pload ALL
+pload MODELING VISUALIZATION
 vinit
 box b 10 10 10
 vdisplay b
 vfit
 vsetdispmode 1
 vzbufftrihedron -on
+#draw initial picture of box without visual scale
+vdump $imagedir/${casename}_unscaled.png
+
+#draw picture of box after visual scale
+#and zoomed out
 vscale 1 3 10
+vzoom 0.99
 
 set color_1 [vreadpixel 55 360 -rgb -name]
 set color_2 [vreadpixel 50 350 -rgb -name]
@@ -37,4 +43,4 @@ if {$color_3 != "GREEN3"} {
   puts "       current color is:  $color_3"
 }
 
-vdump $imagedir/${casename}.png
\ No newline at end of file
+vdump $imagedir/${casename}_scaled.png