[Scilab-users] How to create transparent polygon

[Chin Luh Tan]

Hi,

If it is not necessary to have real transparent color mixing, but just want to have the transparent effect, you could try to play with the "pixel_drawing_mode". 
f = figure("background", 1,"pixel_drawing_mode", "or");
plot2d(0,0,-1,"010"," ",[-2,-2,2,2]);

x=sin(2*%pi*(0:4)/5);
y=cos(2*%pi*(0:4)/5);
plot2d(0,0,-1,"010"," ",[-2,-2,2,2]);
gca().foreground = 12;
xfpoly(x,y);
gca().foreground = 27;
xfpoly(x+0.3,y+0.3)






example from https://help.scilab.org/docs/6.0.2/en_US/pixel_drawing_mode.html

rgds,
CL


---- On Sat, 09 Nov 2019 21:19:44 +0800 jaipur <mailto:acj119 at nifty.com> wrote ----


Dear all 
 
When making a polygon by xpoly for example, can we set transparency effect 
as the following polygon? 
If it's possible, could you suggest the way of doing? 
 
Regards 
Hiroshi Tachihara 
 
<http://mailinglists.scilab.org/file/t497089/transparency.png> 
 
 
 
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