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Drawing of a “thick” subset of the unity sphere

0

Let A be a subset of the unity sphere as in the next picture:

begintikzpicture
shade[ball color=blue, opacity=0.4] (0,0) circle (2);
draw (0,0) circle (2);
fill[fill=blue!80,rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
draw[rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
node at (1,1) $A$;
endtikzpicture

I want to draw the set $ xin A,: tin (1-epsilon,1+epsilon)$ for a small epsilon. This set is like the "transform" of A from a thin region to a "slightly thicker" one.

It may be a nice idea to draw a "cone" from the origin to A ans surpassing it so the viewer can understand what we are doing.

How could we do it?

tikz-pgf

share

asked 7 mins ago

GabrielGabriel

36019

add a comment | 

0

Let A be a subset of the unity sphere as in the next picture:

begintikzpicture
shade[ball color=blue, opacity=0.4] (0,0) circle (2);
draw (0,0) circle (2);
fill[fill=blue!80,rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
draw[rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
node at (1,1) $A$;
endtikzpicture

I want to draw the set $ xin A,: tin (1-epsilon,1+epsilon)$ for a small epsilon. This set is like the "transform" of A from a thin region to a "slightly thicker" one.

It may be a nice idea to draw a "cone" from the origin to A ans surpassing it so the viewer can understand what we are doing.

How could we do it?

tikz-pgf

share

asked 7 mins ago

GabrielGabriel

36019

add a comment | 

Let A be a subset of the unity sphere as in the next picture:

begintikzpicture
shade[ball color=blue, opacity=0.4] (0,0) circle (2);
draw (0,0) circle (2);
fill[fill=blue!80,rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
draw[rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
node at (1,1) $A$;
endtikzpicture

I want to draw the set $ xin A,: tin (1-epsilon,1+epsilon)$ for a small epsilon. This set is like the "transform" of A from a thin region to a "slightly thicker" one.

It may be a nice idea to draw a "cone" from the origin to A ans surpassing it so the viewer can understand what we are doing.

How could we do it?

tikz-pgf

share

asked 7 mins ago

GabrielGabriel

36019

begintikzpicture
shade[ball color=blue, opacity=0.4] (0,0) circle (2);
draw (0,0) circle (2);
fill[fill=blue!80,rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
draw[rotate around=60:(1,1)] (1,1) ellipse (0.3 and 0.5);
node at (1,1) $A$;
endtikzpicture

share

asked 7 mins ago

GabrielGabriel

36019

share

asked 7 mins ago

GabrielGabriel

36019

asked 7 mins ago

GabrielGabriel

36019

asked 7 mins ago

GabrielGabriel

36019