3d emulation with tikz

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6
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I am trying to draw a 3d arbitrary volume using tikz.
The 2d equivalent is like(courtesy: this):

beginframe
 begintikzpicture 
pgfmathsetseed3
draw[fill=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd) node at (0,0) ;
endtikzpicture
endframe

Is it possible to give it a 3d feeling? like a diffused lighting effect or something?

tikz-pgf

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asked Aug 31 at 18:02

BaRud

80321321

add a comment | 

up vote
6
down vote

favorite

I am trying to draw a 3d arbitrary volume using tikz.
The 2d equivalent is like(courtesy: this):

beginframe
 begintikzpicture 
pgfmathsetseed3
draw[fill=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd) node at (0,0) ;
endtikzpicture
endframe

Is it possible to give it a 3d feeling? like a diffused lighting effect or something?

tikz-pgf

share|improve this question

asked Aug 31 at 18:02

BaRud

80321321

add a comment | 

up vote
6
down vote

favorite

up vote
6
down vote

favorite

I am trying to draw a 3d arbitrary volume using tikz.
The 2d equivalent is like(courtesy: this):

beginframe
 begintikzpicture 
pgfmathsetseed3
draw[fill=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd) node at (0,0) ;
endtikzpicture
endframe

Is it possible to give it a 3d feeling? like a diffused lighting effect or something?

tikz-pgf

share|improve this question

asked Aug 31 at 18:02

BaRud

80321321

I am trying to draw a 3d arbitrary volume using tikz.
The 2d equivalent is like(courtesy: this):

beginframe
 begintikzpicture 
pgfmathsetseed3
draw[fill=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd) node at (0,0) ;
endtikzpicture
endframe

Is it possible to give it a 3d feeling? like a diffused lighting effect or something?

tikz-pgf

share|improve this question

asked Aug 31 at 18:02

BaRud

80321321

share|improve this question

share|improve this question

asked Aug 31 at 18:02

BaRud

80321321

asked Aug 31 at 18:02

BaRud

80321321

asked Aug 31 at 18:02

BaRud

80321321

80321321

add a comment | 

add a comment | 

2 Answers
2

active

oldest

votes

up vote
8
down vote



accepted

Here is an option using shade and the ball preset

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture 
pgfmathsetseed3
shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
endtikzpicture
enddocument

Some more examples

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture
pgfmathsetmacroS3
foreach X in 1,...,3
 foreach Y in 1,...,3
 beginscope[shift=(S*X,S*Y)]
 shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
 endscope
 

endtikzpicture
enddocument

share|improve this answer

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

add a comment | 

up vote
4
down vote

A very small addendum to Milo's great answer: sometimes you want the bright spot not to be where shade[ball color=...]... puts it. You could either define your own shading, or, what is perhaps simpler, clip a circle with a shifted center against that shape. The following animation is supposed to give you an idea what's possible. In the end, you will have to decide on your own what looks realistic, or switch to asymptote, which computes realistic shadings for you.

documentclass[tikz,margin=0.5cm]standalone
begindocument
foreach X in 1,2,...,42
begintikzpicture 
pgfmathsetseedX
path[use as bounding box] (-4,-4) rectangle (4,4);
clip plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
shade [ball color=blue!70] (0.5+rnd,-0.5+rnd) circle (3cm); 
endtikzpicture
enddocument

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

add a comment | 

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
8
down vote



accepted

Here is an option using shade and the ball preset

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture 
pgfmathsetseed3
shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
endtikzpicture
enddocument

Some more examples

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture
pgfmathsetmacroS3
foreach X in 1,...,3
 foreach Y in 1,...,3
 beginscope[shift=(S*X,S*Y)]
 shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
 endscope
 

endtikzpicture
enddocument

share|improve this answer

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

add a comment | 

up vote
8
down vote



accepted

Here is an option using shade and the ball preset

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture 
pgfmathsetseed3
shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
endtikzpicture
enddocument

Some more examples

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture
pgfmathsetmacroS3
foreach X in 1,...,3
 foreach Y in 1,...,3
 beginscope[shift=(S*X,S*Y)]
 shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
 endscope
 

endtikzpicture
enddocument

share|improve this answer

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

add a comment | 

up vote
8
down vote



accepted

up vote
8
down vote



accepted

Here is an option using shade and the ball preset

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture 
pgfmathsetseed3
shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
endtikzpicture
enddocument

Some more examples

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture
pgfmathsetmacroS3
foreach X in 1,...,3
 foreach Y in 1,...,3
 beginscope[shift=(S*X,S*Y)]
 shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
 endscope
 

endtikzpicture
enddocument

share|improve this answer

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

Here is an option using shade and the ball preset

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture 
pgfmathsetseed3
shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
endtikzpicture
enddocument

Some more examples

documentclass[tikz,margin=0.5cm]standalone
begindocument
begintikzpicture
pgfmathsetmacroS3
foreach X in 1,...,3
 foreach Y in 1,...,3
 beginscope[shift=(S*X,S*Y)]
 shade [ball color=blue!70] plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
 endscope
 

endtikzpicture
enddocument

share|improve this answer

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

share|improve this answer

share|improve this answer

edited Aug 31 at 18:20

edited Aug 31 at 18:20

edited Aug 31 at 18:20

answered Aug 31 at 18:06

Milo

5,53321345

answered Aug 31 at 18:06

Milo

5,53321345

answered Aug 31 at 18:06

Milo

5,53321345

5,53321345

add a comment | 

add a comment | 

up vote
4
down vote

A very small addendum to Milo's great answer: sometimes you want the bright spot not to be where shade[ball color=...]... puts it. You could either define your own shading, or, what is perhaps simpler, clip a circle with a shifted center against that shape. The following animation is supposed to give you an idea what's possible. In the end, you will have to decide on your own what looks realistic, or switch to asymptote, which computes realistic shadings for you.

documentclass[tikz,margin=0.5cm]standalone
begindocument
foreach X in 1,2,...,42
begintikzpicture 
pgfmathsetseedX
path[use as bounding box] (-4,-4) rectangle (4,4);
clip plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
shade [ball color=blue!70] (0.5+rnd,-0.5+rnd) circle (3cm); 
endtikzpicture
enddocument

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

add a comment | 

up vote
4
down vote

A very small addendum to Milo's great answer: sometimes you want the bright spot not to be where shade[ball color=...]... puts it. You could either define your own shading, or, what is perhaps simpler, clip a circle with a shifted center against that shape. The following animation is supposed to give you an idea what's possible. In the end, you will have to decide on your own what looks realistic, or switch to asymptote, which computes realistic shadings for you.

documentclass[tikz,margin=0.5cm]standalone
begindocument
foreach X in 1,2,...,42
begintikzpicture 
pgfmathsetseedX
path[use as bounding box] (-4,-4) rectangle (4,4);
clip plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
shade [ball color=blue!70] (0.5+rnd,-0.5+rnd) circle (3cm); 
endtikzpicture
enddocument

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

add a comment | 

up vote
4
down vote

up vote
4
down vote

A very small addendum to Milo's great answer: sometimes you want the bright spot not to be where shade[ball color=...]... puts it. You could either define your own shading, or, what is perhaps simpler, clip a circle with a shifted center against that shape. The following animation is supposed to give you an idea what's possible. In the end, you will have to decide on your own what looks realistic, or switch to asymptote, which computes realistic shadings for you.

documentclass[tikz,margin=0.5cm]standalone
begindocument
foreach X in 1,2,...,42
begintikzpicture 
pgfmathsetseedX
path[use as bounding box] (-4,-4) rectangle (4,4);
clip plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
shade [ball color=blue!70] (0.5+rnd,-0.5+rnd) circle (3cm); 
endtikzpicture
enddocument

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

A very small addendum to Milo's great answer: sometimes you want the bright spot not to be where shade[ball color=...]... puts it. You could either define your own shading, or, what is perhaps simpler, clip a circle with a shifted center against that shape. The following animation is supposed to give you an idea what's possible. In the end, you will have to decide on your own what looks realistic, or switch to asymptote, which computes realistic shadings for you.

documentclass[tikz,margin=0.5cm]standalone
begindocument
foreach X in 1,2,...,42
begintikzpicture 
pgfmathsetseedX
path[use as bounding box] (-4,-4) rectangle (4,4);
clip plot [smooth cycle, samples=8,domain=1:8]
 (x*360/8+5*rnd:0.5cm+1cm*rnd);
shade [ball color=blue!70] (0.5+rnd,-0.5+rnd) circle (3cm); 
endtikzpicture
enddocument

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

share|improve this answer

share|improve this answer

answered Aug 31 at 21:14

marmot

56.2k461122

answered Aug 31 at 21:14

marmot

56.2k461122

answered Aug 31 at 21:14

marmot

56.2k461122

56.2k461122

add a comment | 

add a comment | 

 

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