Category:Map projections with Tissot's indicatrix/Templates
Jump to navigation
Jump to search
Template images of equirectangular maps with Tissot's indicatrices of several resolution
Povray source code for these images:
#declare DEG=2; #declare NUM = 720/DEG; #declare R= (2*pi / NUM)*0.5; #declare Kugel = sphere { <0,0,1>, R pigment { color rgbt<0.9,0,0,0.5> } finish { ambient 1 } } #declare X=0; #declare LAMBDA=-180; #while( LAMBDA<+180 ) #declare PHI = -90 + DEG; #while( PHI < +90 ) #declare SNIP = int( (R*NUM)/(cos(PHI*pi/180)*pi)+0.5); #if( (SNIP > 1) & ( mod(X,SNIP)>0) ) // omit sphere #else object { Kugel rotate x*PHI rotate y*LAMBDA } #end #declare PHI=PHI+DEG; #end #declare X=X+1; #declare LAMBDA = LAMBDA + DEG; #end object { Kugel rotate x*90 } object { Kugel rotate x*-90 } camera { spherical location <0,0,0> look_at <0,0,1> // sky <1,1,0> // for oblique maps }
Media in category "Map projections with Tissot's indicatrix/Templates"
The following 8 files are in this category, out of 8 total.
-
Tissot 02deg oblique.png 4,096 × 2,048; 1,015 KB
-
Tissot 06deg oblique.png 4,096 × 2,048; 370 KB
-
Tissot 10deg.png 4,096 × 2,048; 214 KB
-
Tissot 15deg.png 4,096 × 2,048; 150 KB
-
Tissot 2deg.png 4,096 × 2,048; 826 KB
-
Tissot 30deg.png 4,096 × 2,048; 84 KB
-
Tissot 45deg.png 4,096 × 2,048; 65 KB
-
Tissot 6deg.png 4,096 × 2,048; 350 KB