# SPDX-License-Identifier: GPL-2.0-or-later
"""Use Blender procedural textures exported to POV patterns."""
import bpy
def export_pattern(texture):
"""Translate Blender procedural textures to POV patterns and write to pov file.
Function Patterns can be used to better access sub components of a pattern like
grey values for influence mapping
"""
from .render import string_strip_hyphen
tex = texture
pat = tex.pov
pat_name = "PAT_%s" % string_strip_hyphen(bpy.path.clean_name(tex.name))
mapping_dif = "translate <%.4g,%.4g,%.4g> scale <%.4g,%.4g,%.4g>" % (
pat.tex_mov_x,
pat.tex_mov_y,
pat.tex_mov_z,
1.0 / pat.tex_scale_x,
1.0 / pat.tex_scale_y,
1.0 / pat.tex_scale_z,
)
text_strg = ""
def export_color_ramp(texture):
tex = texture
pat = tex.pov
col_ramp_strg = "color_map {\n"
for num_color, el in enumerate(tex.color_ramp.elements, start=1):
pos = el.position
col = el.color
col_r, col_g, col_b, col_a = col[0], col[1], col[2], 1 - col[3]
if pat.tex_pattern_type not in {
"checker",
"hexagon",
"square",
"triangular",
"brick",
}:
col_ramp_strg += "[%.4g color rgbf<%.4g,%.4g,%.4g,%.4g>] \n" % (
pos,
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type in {"brick", "checker"} and num_color < 3:
col_ramp_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "hexagon" and num_color < 4:
col_ramp_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "square" and num_color < 5:
col_ramp_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "triangular" and num_color < 7:
col_ramp_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
col_ramp_strg += "} \n"
# end color map
return col_ramp_strg
# much work to be done here only defaults translated for now:
# pov noise_generator 3 means perlin noise
if tex.type not in {"NONE", "IMAGE"} and pat.tex_pattern_type == "emulator":
text_strg += "pigment {\n"
# ------------------------- EMULATE BLENDER VORONOI TEXTURE ------------------------- #
if tex.type == "VORONOI":
text_strg += "crackle\n"
text_strg += " offset %.4g\n" % tex.nabla
text_strg += " form <%.4g,%.4g,%.4g>\n" % (
tex.weight_1,
tex.weight_2,
tex.weight_3,
)
if tex.distance_metric == "DISTANCE":
text_strg += " metric 2.5\n"
if tex.distance_metric == "DISTANCE_SQUARED":
text_strg += " metric 2.5\n"
text_strg += " poly_wave 2\n"
if tex.distance_metric == "MINKOVSKY":
text_strg += " metric %s\n" % tex.minkovsky_exponent
if tex.distance_metric == "MINKOVSKY_FOUR":
text_strg += " metric 4\n"
if tex.distance_metric == "MINKOVSKY_HALF":
text_strg += " metric 0.5\n"
if tex.distance_metric == "CHEBYCHEV":
text_strg += " metric 10\n"
if tex.distance_metric == "MANHATTAN":
text_strg += " metric 1\n"
if tex.color_mode == "POSITION":
text_strg += "solid\n"
text_strg += "scale 0.25\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<0,0,0,1>]\n"
text_strg += "[1 color rgbt<1,1,1,0>]\n"
text_strg += "}\n"
# ------------------------- EMULATE BLENDER CLOUDS TEXTURE ------------------------- #
if tex.type == "CLOUDS":
if tex.noise_type == "SOFT_NOISE":
text_strg += "wrinkles\n"
text_strg += "scale 0.25\n"
else:
text_strg += "granite\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<0,0,0,1>]\n"
text_strg += "[1 color rgbt<1,1,1,0>]\n"
text_strg += "}\n"
# ------------------------- EMULATE BLENDER WOOD TEXTURE ------------------------- #
if tex.type == "WOOD":
if tex.wood_type == "RINGS":
text_strg += "wood\n"
text_strg += "scale 0.25\n"
if tex.wood_type == "RINGNOISE":
text_strg += "wood\n"
text_strg += "scale 0.25\n"
text_strg += "turbulence %.4g\n" % (tex.turbulence / 100)
if tex.wood_type == "BANDS":
text_strg += "marble\n"
text_strg += "scale 0.25\n"
text_strg += "rotate <45,-45,45>\n"
if tex.wood_type == "BANDNOISE":
text_strg += "marble\n"
text_strg += "scale 0.25\n"
text_strg += "rotate <45,-45,45>\n"
text_strg += "turbulence %.4g\n" % (tex.turbulence / 10)
if tex.noise_basis_2 == "SIN":
text_strg += "sine_wave\n"
if tex.noise_basis_2 == "TRI":
text_strg += "triangle_wave\n"
if tex.noise_basis_2 == "SAW":
text_strg += "ramp_wave\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<0,0,0,0>]\n"
text_strg += "[1 color rgbt<1,1,1,0>]\n"
text_strg += "}\n"
# ------------------------- EMULATE BLENDER STUCCI TEXTURE ------------------------- #
if tex.type == "STUCCI":
text_strg += "bozo\n"
text_strg += "scale 0.25\n"
if tex.noise_type == "HARD_NOISE":
text_strg += "triangle_wave\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbf<1,1,1,0>]\n"
text_strg += "[1 color rgbt<0,0,0,1>]\n"
text_strg += "}\n"
else:
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbf<0,0,0,1>]\n"
text_strg += "[1 color rgbt<1,1,1,0>]\n"
text_strg += "}\n"
# ------------------------- EMULATE BLENDER MAGIC TEXTURE ------------------------- #
if tex.type == "MAGIC":
text_strg += "leopard\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0.5>]\n"
text_strg += "[0.25 color rgbf<0,1,0,0.75>]\n"
text_strg += "[0.5 color rgbf<0,0,1,0.75>]\n"
text_strg += "[0.75 color rgbf<1,0,1,0.75>]\n"
text_strg += "[1 color rgbf<0,1,0,0.75>]\n"
text_strg += "}\n"
text_strg += "scale 0.1\n"
# ------------------------- EMULATE BLENDER MARBLE TEXTURE ------------------------- #
if tex.type == "MARBLE":
text_strg += "marble\n"
text_strg += "turbulence 0.5\n"
text_strg += "noise_generator 3\n"
text_strg += "scale 0.75\n"
text_strg += "rotate <45,-45,45>\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
if tex.marble_type == "SOFT":
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<0,0,0,0>]\n"
text_strg += "[0.05 color rgbt<0,0,0,0>]\n"
text_strg += "[1 color rgbt<0.9,0.9,0.9,0>]\n"
text_strg += "}\n"
elif tex.marble_type == "SHARP":
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<0,0,0,0>]\n"
text_strg += "[0.025 color rgbt<0,0,0,0>]\n"
text_strg += "[1 color rgbt<0.9,0.9,0.9,0>]\n"
text_strg += "}\n"
else:
text_strg += "[0 color rgbt<0,0,0,0>]\n"
text_strg += "[1 color rgbt<1,1,1,0>]\n"
text_strg += "}\n"
if tex.noise_basis_2 == "SIN":
text_strg += "sine_wave\n"
if tex.noise_basis_2 == "TRI":
text_strg += "triangle_wave\n"
if tex.noise_basis_2 == "SAW":
text_strg += "ramp_wave\n"
# ------------------------- EMULATE BLENDER BLEND TEXTURE ------------------------- #
if tex.type == "BLEND":
if tex.progression == "RADIAL":
text_strg += "radial\n"
if tex.use_flip_axis == "HORIZONTAL":
text_strg += "rotate x*90\n"
else:
text_strg += "rotate <-90,0,90>\n"
text_strg += "ramp_wave\n"
elif tex.progression == "SPHERICAL":
text_strg += "spherical\n"
text_strg += "scale 3\n"
text_strg += "poly_wave 1\n"
elif tex.progression == "QUADRATIC_SPHERE":
text_strg += "spherical\n"
text_strg += "scale 3\n"
text_strg += " poly_wave 2\n"
elif tex.progression == "DIAGONAL":
text_strg += "gradient <1,1,0>\n"
text_strg += "scale 3\n"
elif tex.use_flip_axis == "HORIZONTAL":
text_strg += "gradient x\n"
text_strg += "scale 2.01\n"
elif tex.use_flip_axis == "VERTICAL":
text_strg += "gradient y\n"
text_strg += "scale 2.01\n"
# text_strg+="ramp_wave\n"
# text_strg+="frequency 0.5\n"
text_strg += "phase 0.5\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
if tex.progression == "LINEAR":
text_strg += " poly_wave 1\n"
if tex.progression == "QUADRATIC":
text_strg += " poly_wave 2\n"
if tex.progression == "EASING":
text_strg += " poly_wave 1.5\n"
# ------------------------- EMULATE BLENDER MUSGRAVE TEXTURE ------------------------- #
# if tex.type == 'MUSGRAVE':
# text_strg+="function{ f_ridged_mf( x, y, 0, 1, 2, 9, -0.5, 3,3 )*0.5}\n"
# text_strg+="color_map {\n"
# text_strg+="[0 color rgbf<0,0,0,1>]\n"
# text_strg+="[1 color rgbf<1,1,1,0>]\n"
# text_strg+="}\n"
# simplified for now:
if tex.type == "MUSGRAVE":
text_strg += "bozo scale 0.25 \n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += (
"color_map {[0.5 color rgbf<0,0,0,1>][1 color rgbt<1,1,1,0>]}ramp_wave \n"
)
# ------------------------- EMULATE BLENDER DISTORTED NOISE TEXTURE ------------------------- #
if tex.type == "DISTORTED_NOISE":
text_strg += "average\n"
text_strg += " pigment_map {\n"
text_strg += " [1 bozo scale 0.25 turbulence %.4g\n" % tex.distortion
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
text_strg += "]\n"
if tex.noise_distortion == "CELL_NOISE":
text_strg += " [1 cells scale 0.1\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
text_strg += "]\n"
if tex.noise_distortion == "VORONOI_CRACKLE":
text_strg += " [1 crackle scale 0.25\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
text_strg += "]\n"
if tex.noise_distortion in [
"VORONOI_F1",
"VORONOI_F2",
"VORONOI_F3",
"VORONOI_F4",
"VORONOI_F2_F1",
]:
text_strg += " [1 crackle metric 2.5 scale 0.25 turbulence %.4g\n" % (
tex.distortion / 2
)
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
text_strg += "]\n"
else:
text_strg += " [1 wrinkles scale 0.25\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0 color rgbt<1,1,1,0>]\n"
text_strg += "[1 color rgbf<0,0,0,1>]\n"
text_strg += "}\n"
text_strg += "]\n"
text_strg += " }\n"
# ------------------------- EMULATE BLENDER NOISE TEXTURE ------------------------- #
if tex.type == "NOISE":
text_strg += "cells\n"
text_strg += "turbulence 3\n"
text_strg += "omega 3\n"
if tex.use_color_ramp:
text_strg += export_color_ramp(tex)
else:
text_strg += "color_map {\n"
text_strg += "[0.75 color rgb<0,0,0,>]\n"
text_strg += "[1 color rgb<1,1,1,>]\n"
text_strg += "}\n"
# ------------------------- IGNORE OTHER BLENDER TEXTURE ------------------------- #
else: # non translated textures
pass
text_strg += "}\n\n"
text_strg += "#declare f%s=\n" % pat_name
text_strg += "function{pigment{%s}}\n" % pat_name
text_strg += "\n"
elif pat.tex_pattern_type != "emulator":
text_strg += "pigment {\n"
text_strg += "%s\n" % pat.tex_pattern_type
if pat.tex_pattern_type == "agate":
text_strg += "agate_turb %.4g\n" % pat.modifier_turbulence
if pat.tex_pattern_type in {"spiral1", "spiral2", "tiling"}:
text_strg += "%s\n" % pat.modifier_numbers
if pat.tex_pattern_type == "quilted":
text_strg += "control0 %s control1 %s\n" % (
pat.modifier_control0,
pat.modifier_control1,
)
if pat.tex_pattern_type == "mandel":
text_strg += "%s exponent %s \n" % (pat.f_iter, pat.f_exponent)
if pat.tex_pattern_type == "julia":
text_strg += "<%.4g, %.4g> %s exponent %s \n" % (
pat.julia_complex_1,
pat.julia_complex_2,
pat.f_iter,
pat.f_exponent,
)
if pat.tex_pattern_type == "magnet" and pat.magnet_style == "mandel":
text_strg += "%s mandel %s \n" % (pat.magnet_type, pat.f_iter)
if pat.tex_pattern_type == "magnet" and pat.magnet_style == "julia":
text_strg += "%s julia <%.4g, %.4g> %s\n" % (
pat.magnet_type,
pat.julia_complex_1,
pat.julia_complex_2,
pat.f_iter,
)
if pat.tex_pattern_type in {"mandel", "julia", "magnet"}:
text_strg += "interior %s, %.4g\n" % (pat.f_ior, pat.f_ior_fac)
text_strg += "exterior %s, %.4g\n" % (pat.f_eor, pat.f_eor_fac)
if pat.tex_pattern_type == "gradient":
text_strg += "<%s, %s, %s> \n" % (
pat.grad_orient_x,
pat.grad_orient_y,
pat.grad_orient_z,
)
if pat.tex_pattern_type == "pavement":
num_tiles = pat.pave_tiles
num_pattern = 1
if pat.pave_sides == "4" and pat.pave_tiles == 3:
num_pattern = pat.pave_pat_2
if pat.pave_sides == "6" and pat.pave_tiles == 3:
num_pattern = pat.pave_pat_3
if pat.pave_sides == "3" and pat.pave_tiles == 4:
num_pattern = pat.pave_pat_3
if pat.pave_sides == "3" and pat.pave_tiles == 5:
num_pattern = pat.pave_pat_4
if pat.pave_sides == "4" and pat.pave_tiles == 4:
num_pattern = pat.pave_pat_5
if pat.pave_sides == "6" and pat.pave_tiles == 4:
num_pattern = pat.pave_pat_7
if pat.pave_sides == "4" and pat.pave_tiles == 5:
num_pattern = pat.pave_pat_12
if pat.pave_sides == "3" and pat.pave_tiles == 6:
num_pattern = pat.pave_pat_12
if pat.pave_sides == "6" and pat.pave_tiles == 5:
num_pattern = pat.pave_pat_22
if pat.pave_sides == "4" and pat.pave_tiles == 6:
num_pattern = pat.pave_pat_35
if pat.pave_sides == "6" and pat.pave_tiles == 6:
num_tiles = 5
text_strg += "number_of_sides %s number_of_tiles %s pattern %s form %s \n" % (
pat.pave_sides,
num_tiles,
num_pattern,
pat.pave_form,
)
# ------------------------- functions ------------------------- #
if pat.tex_pattern_type == "function":
text_strg += "{ %s" % pat.func_list
text_strg += "(x"
if pat.func_plus_x != "NONE":
if pat.func_plus_x == "increase":
text_strg += "*"
if pat.func_plus_x == "plus":
text_strg += "+"
text_strg += "%.4g" % pat.func_x
text_strg += ",y"
if pat.func_plus_y != "NONE":
if pat.func_plus_y == "increase":
text_strg += "*"
if pat.func_plus_y == "plus":
text_strg += "+"
text_strg += "%.4g" % pat.func_y
text_strg += ",z"
if pat.func_plus_z != "NONE":
if pat.func_plus_z == "increase":
text_strg += "*"
if pat.func_plus_z == "plus":
text_strg += "+"
text_strg += "%.4g" % pat.func_z
sort = -1
if pat.func_list in {
"f_comma",
"f_crossed_trough",
"f_cubic_saddle",
"f_cushion",
"f_devils_curve",
"f_enneper",
"f_glob",
"f_heart",
"f_hex_x",
"f_hex_y",
"f_hunt_surface",
"f_klein_bottle",
"f_kummer_surface_v1",
"f_lemniscate_of_gerono",
"f_mitre",
"f_nodal_cubic",
"f_noise_generator",
"f_odd",
"f_paraboloid",
"f_pillow",
"f_piriform",
"f_quantum",
"f_quartic_paraboloid",
"f_quartic_saddle",
"f_sphere",
"f_steiners_roman",
"f_torus_gumdrop",
"f_umbrella",
}:
sort = 0
if pat.func_list in {
"f_bicorn",
"f_bifolia",
"f_boy_surface",
"f_superellipsoid",
"f_torus",
}:
sort = 1
if pat.func_list in {
"f_ellipsoid",
"f_folium_surface",
"f_hyperbolic_torus",
"f_kampyle_of_eudoxus",
"f_parabolic_torus",
"f_quartic_cylinder",
"f_torus2",
}:
sort = 2
if pat.func_list in {
"f_blob2",
"f_cross_ellipsoids",
"f_flange_cover",
"f_isect_ellipsoids",
"f_kummer_surface_v2",
"f_ovals_of_cassini",
"f_rounded_box",
"f_spikes_2d",
"f_strophoid",
}:
sort = 3
if pat.func_list in {
"f_algbr_cyl1",
"f_algbr_cyl2",
"f_algbr_cyl3",
"f_algbr_cyl4",
"f_blob",
"f_mesh1",
"f_poly4",
"f_spikes",
}:
sort = 4
if pat.func_list in {
"f_devils_curve_2d",
"f_dupin_cyclid",
"f_folium_surface_2d",
"f_hetero_mf",
"f_kampyle_of_eudoxus_2d",
"f_lemniscate_of_gerono_2d",
"f_polytubes",
"f_ridge",
"f_ridged_mf",
"f_spiral",
"f_witch_of_agnesi",
}:
sort = 5
if pat.func_list in {
"f_helix1",
"f_helix2",
"f_piriform_2d",
"f_strophoid_2d",
}:
sort = 6
if pat.func_list == "f_helical_torus":
sort = 7
if sort > -1:
text_strg += ",%.4g" % pat.func_P0
if sort > 0:
text_strg += ",%.4g" % pat.func_P1
if sort > 1:
text_strg += ",%.4g" % pat.func_P2
if sort > 2:
text_strg += ",%.4g" % pat.func_P3
if sort > 3:
text_strg += ",%.4g" % pat.func_P4
if sort > 4:
text_strg += ",%.4g" % pat.func_P5
if sort > 5:
text_strg += ",%.4g" % pat.func_P6
if sort > 6:
text_strg += ",%.4g" % pat.func_P7
text_strg += ",%.4g" % pat.func_P8
text_strg += ",%.4g" % pat.func_P9
text_strg += ")}\n"
# ------------------------- end functions ------------------------- #
if pat.tex_pattern_type not in {
"checker",
"hexagon",
"square",
"triangular",
"brick",
}:
text_strg += "color_map {\n"
if tex.use_color_ramp:
for num_color, el in enumerate(tex.color_ramp.elements, start=1):
pos = el.position
col = el.color
col_r, col_g, col_b, col_a = col[0], col[1], col[2], 1 - col[3]
if pat.tex_pattern_type not in {
"checker",
"hexagon",
"square",
"triangular",
"brick",
}:
text_strg += "[%.4g color rgbf<%.4g,%.4g,%.4g,%.4g>] \n" % (
pos,
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type in {"brick", "checker"} and num_color < 3:
text_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "hexagon" and num_color < 4:
text_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "square" and num_color < 5:
text_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
if pat.tex_pattern_type == "triangular" and num_color < 7:
text_strg += "color rgbf<%.4g,%.4g,%.4g,%.4g> \n" % (
col_r,
col_g,
col_b,
col_a,
)
else:
text_strg += "[0 color rgbf<0,0,0,1>]\n"
text_strg += "[1 color rgbf<1,1,1,0>]\n"
if pat.tex_pattern_type not in {
"checker",
"hexagon",
"square",
"triangular",
"brick",
}:
text_strg += "} \n"
if pat.tex_pattern_type == "brick":
text_strg += "brick_size <%.4g, %.4g, %.4g> mortar %.4g \n" % (
pat.brick_size_x,
pat.brick_size_y,
pat.brick_size_z,
pat.brick_mortar,
)
text_strg += "%s \n" % mapping_dif
text_strg += "rotate <%.4g,%.4g,%.4g> \n" % (
pat.tex_rot_x,
pat.tex_rot_y,
pat.tex_rot_z,
)
text_strg += "turbulence <%.4g,%.4g,%.4g> \n" % (
pat.warp_turbulence_x,
pat.warp_turbulence_y,
pat.warp_turbulence_z,
)
text_strg += "octaves %s \n" % pat.modifier_octaves
text_strg += "lambda %.4g \n" % pat.modifier_lambda
text_strg += "omega %.4g \n" % pat.modifier_omega
text_strg += "frequency %.4g \n" % pat.modifier_frequency
text_strg += "phase %.4g \n" % pat.modifier_phase
text_strg += "}\n\n"
text_strg += "#declare f%s=\n" % pat_name
text_strg += "function{pigment{%s}}\n" % pat_name
text_strg += "\n"
return text_strg