puts "========"
puts "0025775: Default Gradient Background in V3d_Viewer has no effect in new created V3d_View"
puts "========"
puts ""

pload VISUALIZATION
vbackground -default -gradient BLACK GRAY25 -gradientMode HORIZONTAL
vinit View1 w=400 h=400
if { [vreadpixel 399 100 -rgb -name] != "GRAY25" } { puts "Error: bug with default gradient color is reproduced." }
vdump $imagedir/${casename}_v1.png

vinit View2 w=400 h=400
if { [vreadpixel 399 100 -rgb -name] != "GRAY25" } { puts "Error: bug with default gradient color is reproduced." }
vdump $imagedir/${casename}_v2.png

vbackground -default -color GRAY50
vinit View3
if { [vreadpixel 100 100 -rgb -name] != "GRAY50" } { puts "Error: bug with default background color is reproduced." }
vdump $imagedir/${casename}_v3.png