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Mgfractal: Add 3D and 4D fractals 

3D Mandelbrot/Mandelbar
3D Christmas Tree
3D Mandelbulb
3D Cosine Mandelbulb
4D Mandelbulb
Plus corresponding julia set for each
Add credits for formulas
Rename parameter 'formula' to 'fractal'
Speed optimisations
This commit is contained in:
paramat 2015-12-08 05:40:36 +00:00 committed by Nils Dagsson Moskopp
parent 111be664a8
commit 681434bc5d
Signed by: erle
GPG Key ID: A3BC671C35191080
1 changed files with 31 additions and 20 deletions
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builtin/settingtypes.txt
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@ -970,49 +970,60 @@ mgflat_np_cave2 (Mapgen flat cave2 noise parameters) noise_params 0, 12, (128, 1
[***Mapgen fractal]
# Choice of 8 4-dimensional fractals.
# 1 = "Roundy" mandelbrot set.
# 2 = "Roundy" julia set.
# 3 = "Squarry" mandelbrot set.
# 4 = "Squarry" julia set.
# 5 = "Mandy Cousin" mandelbrot set.
# 6 = "Mandy Cousin" julia set.
# 7 = "Variation" mandelbrot set.
# 8 = "Variation" julia set.
mgfractal_formula (Mapgen fractal formula) int 1 1 8
# Choice of 18 fractals from 9 formulas.
# 1 = 4D "Roundy" mandelbrot set.
# 2 = 4D "Roundy" julia set.
# 3 = 4D "Squarry" mandelbrot set.
# 4 = 4D "Squarry" julia set.
# 5 = 4D "Mandy Cousin" mandelbrot set.
# 6 = 4D "Mandy Cousin" julia set.
# 7 = 4D "Variation" mandelbrot set.
# 8 = 4D "Variation" julia set.
# 9 = 3D "Mandelbrot/Mandelbar" mandelbrot set.
# 10 = 3D "Mandelbrot/Mandelbar" julia set.
# 11 = 3D "Christmas Tree" mandelbrot set.
# 12 = 3D "Christmas Tree" julia set.
# 13 = 3D "Mandelbulb" mandelbrot set.
# 14 = 3D "Mandelbulb" julia set.
# 15 = 3D "Cosine Mandelbulb" mandelbrot set.
# 16 = 3D "Cosine Mandelbulb" julia set.
# 17 = 4D "Mandelbulb" mandelbrot set.
# 18 = 4D "Mandelbulb" julia set.
mgfractal_fractal (Mapgen fractal fractal) int 1 1 18
# Iterations of the recursive function.
# Controls scale of finest detail.
# Controls the amount of fine detail.
mgfractal_iterations (Mapgen fractal iterations) int 11
# Approximate (X,Y,Z) scale of fractal in nodes.
mgfractal_scale (Mapgen fractal scale) v3f (4096.0, 1024.0, 4096.0)
# (X,Y,Z) offset of fractal from world centre.
# (X,Y,Z) offset of fractal from world centre in units of 'scale'.
# Used to move a suitable spawn area of low land close to (0, 0).
# The default is suitable for mandelbrot sets, it needs to be edited for julia sets,
# do this by greatly reducing 'scale' and setting 'offset' initially to (0, 0, 0).
# The default is suitable for mandelbrot sets, it needs to be edited for julia sets.
# Range roughly -2 to 2. Multiply by 'scale' for offset in nodes.
mgfractal_offset (Mapgen fractal offset) v3f (1.79, 0.0, 0.0)
# W co-ordinate of the generated 3D slice of the 4D shape.
# Alters the generated 3D shape.
# W co-ordinate of the generated 3D slice of a 4D fractal.
# Determines which 3D slice of the 4D shape is generated.
# Has no effect on 3D fractals.
# Range roughly -2 to 2.
mgfractal_slice_w (Mapgen fractal slice w) float 0.0
# Julia set only: X value determining the 4D shape.
# Julia set only: X component of hypercomplex constant determining julia shape.
# Range roughly -2 to 2.
mgfractal_julia_x (Mapgen fractal julia x) float 0.33
# Julia set only: Y value determining the 4D shape.
# Julia set only: Y component of hypercomplex constant determining julia shape.
# Range roughly -2 to 2.
mgfractal_julia_y (Mapgen fractal julia y) float 0.33
# Julia set only: Z value determining the 4D shape.
# Julia set only: Z component of hypercomplex constant determining julia shape.
# Range roughly -2 to 2.
mgfractal_julia_z (Mapgen fractal julia z) float 0.33
# Julia set only: W value determining the 4D shape.
# Julia set only: W component of hypercomplex constant determining julia shape.
# Has no effect on 3D fractals.
# Range roughly -2 to 2.
mgfractal_julia_w (Mapgen fractal julia w) float 0.33