search for: perp3d

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2012 Aug 27
1
RGL plot : lighting problem when triangle3d and persp3d are used in the same plot
...riangular matrix with the function persp3d(rgl). for example z=rbind(c(1,NA,NA,NA),c(5,3,NA,NA),c(4,2,9,NA),c(8,6,5,11)) x=1:4 y=1:4 persp3d(x,y,z,color="gray") The two extreme points are not plotted (value=1 and value=10). It seems because the half of the matrix have 'NA' and perp3d need planar quadrilateral face. So I decided to use the function triangle3d to integrate these points into the scene. So, for the first point I did : triangles3d(x=c(1,2,2),y=c(1,1,2),z=c(1,5,3)) and it worked But a problem remains because the light movment on this triangle looks independant and...