10.1.10  Texture

Describe the surface of an object

TEXTURE:

PLAIN_TEXTURE | LAYERED_TEXTURE | PATTERNED_TEXTURE

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10.1.10.1  Plain Texture

Describe a texture consisting of a single pigment, normal and finish:

PLAIN_TEXTURE:

texture { PLAIN_TEXTURE_BODY }

PLAIN_TEXTURE_BODY:

[PLAIN_TEXTURE_IDENT] [PNF_IDENTIFIERS] [PNF_ITEMS]

PNF_IDENTIFIERS:

[PIGMENT_IDENTIFIER] & [NORMAL_IDENTIFIER] & [FINISH_IDENTIFIER]

PNF_ITEMS:

[PIGMENT] & [NORMAL] & [FINISH] & [TRANSFORMATION...]

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10.1.10.2  Layered Texture

Describe a texture consisting of two or more semi-transparent layers:

LAYERED_TEXTURE:

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texture { LAYERED_TEXTURE_IDENT } |
PLAIN_TEXTURE PLAIN_TEXTURE...

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10.1.10.3  Patterned Texture

Describe a texture using a pattern or blending function:

PATTERNED_TEXTURE:

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texture { PATTERNED_TEXTURE_BODY }

PATTERNED_TEXTURE_BODY:

PATTERNED_TEXTURE_IDENT [TRANSFORMATION...] | TEXTURE_PATTERN [PATTERN_MODIFIERS] | MATERIAL_MAP [TRANSFORMATION...]

TEXTURE_PATTERN:

TEXTURE_LIST_PATTERN | MAP_PATTERN TEXTURE_MAP

TEXTURE_LIST_PATTERN:

brick TEXTURE, TEXTURE [BRICK_ITEMS] |
checker TEXTURE, TEXTURE |
hexagon TEXTURE, TEXTURE, TEXTURE |
object { LIST_OBJECT TEXTURE, TEXTURE }

BRICK_ITEMS:

[brick_size VECTOR] & [mortar FLOAT]

LIST_OBJECT:

UNTEXTURED_SOLID_OBJECT | UNTEXTURED_SOLID_OBJECT_IDENT

TEXTURE_MAP:

texture_map { TEXTURE_MAP_BODY } [BLEND_MAP_MODIFIERS]

TEXTURE_MAP_BODY:

TEXTURE_MAP_IDENTIFIER | TEXTURE_MAP_ENTRY...

There may be from 2 to 256 map entries.

TEXTURE_MAP_ENTRY:

[ FLOAT TEXTURE_BODY ]

The brackets here are part of the map entry.

TEXTURE_BODY:

PLAIN_TEXTURE_BODY | LAYERED_TEXTURE_IDENT | PATTERNED_TEXTURE_BODY

MATERIAL_MAP:

material_map { BITMAP_IMAGE [BITMAP_MODIFIERS] TEXTURE... }

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10.1.10.4  Pigment

Describe a color or pattern of colors for a texture:

PIGMENT:

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pigment { PIGMENT_BODY }

PIGMENT_BODY:

[PIGMENT_IDENTIFIER] [PIGMENT_TYPE] [PIGMENT_MODIFIERS]

PIGMENT_TYPE:

COLOR | COLOR_LIST_PATTERN | PIGMENT_LIST_PATTERN | IMAGE_MAP | MAP_PATTERN [COLOR_MAP] | MAP_PATTERN PIGMENT_MAP

COLOR_LIST_PATTERN:

brick [COLOR [, COLOR]] [BRICK_ITEMS] |
checker [COLOR [, COLOR]] |
hexagon [COLOR [, COLOR [, COLOR]]] |
object { LIST_OBJECT [COLOR [, COLOR]] }

PIGMENT_LIST_PATTERN:

brick PIGMENT, PIGMENT [BRICK_ITEMS] |
checker PIGMENT, PIGMENT |
hexagon PIGMENT, PIGMENT, PIGMENT |
object { LIST_OBJECT PIGMENT, PIGMENT }

IMAGE_MAP:

image_map {BITMAP_IMAGE [IMAGE_MAP_MODIFIER...] [BITMAP_MODIFIERS] }

IMAGE_MAP_MODIFIER:

filter I_PALETTE, F_AMOUNT | filter all F_AMOUNT | transmit I_PALETTE, F_AMOUNT | transmit all F_AMOUNT

COLOR_MAP:

color_map { COLOR_MAP_BODY } [BLEND_MAP_MODIFIERS] |
colour_map { COLOR_MAP_BODY } [BLEND_MAP_MODIFIERS]

COLOR_MAP_BODY:

COLOR_MAP_IDENTIFIER | COLOR_MAP_ENTRY...

There may be from 2 to 256 map entries.

COLOR_MAP_ENTRY:

[ FLOAT COLOR ]

The brackets here are part of the map entry.

PIGMENT_MAP:

pigment_map { PIGMENT_MAP_BODY } [BLEND_MAP_MODIFIERS]

PIGMENT_MAP_BODY:

PIGMENT_MAP_IDENTIFIER | PIGMENT_MAP_ENTRY...

There may be from 2 to 256 map entries.

PIGMENT_MAP_ENTRY:

[ FLOAT PIGMENT_BODY ]

The brackets here are part of the map entry.

PIGMENT_MODIFIERS:

[QUICK_COLOR] & [PATTERN_MODIFIERS]

QUICK_COLOR:

quick_color COLOR | quick_colour COLOR

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10.1.10.5  Normal

Simulate the visual or tactile surface characteristics of a texture:

NORMAL:

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normal { NORMAL_BODY }

NORMAL_BODY:

[NORMAL_IDENTIFIER] [NORMAL_TYPE] [NORMAL_MODIFIERS]

NORMAL_TYPE:

NORMAL_PATTERN | BUMP_MAP

NORMAL_PATTERN:

NORMAL_LIST_PATTERN |
MAP_PATTERN [F_DEPTH] [SLOPE_MAP] |
MAP_PATTERN NORMAL_MAP

NORMAL_LIST_PATTERN:

brick NORMAL, NORMAL [BRICK_ITEMS] | brick [F_DEPTH] [BRICK_ITEMS] |
checker NORMAL, NORMAL | checker [F_DEPTH] |
hexagon NORMAL, NORMAL, NORMAL | hexagon [F_DEPTH] |
object { LIST_OBJECT NORMAL, NORMAL } | object { LIST_OBJECT } [F_DEPTH]

NORMAL_MAP:

normal_map { NORMAL_MAP_BODY } [BLEND_MAP_MODIFIERS]

NORMAL_MAP_BODY:

NORMAL_MAP_IDENTIFIER | NORMAL_MAP_ENTRY...

There may be from 2 to 256 map entries.

NORMAL_MAP_ENTRY:

[ FLOAT NORMAL_BODY ]

The brackets here are part of the map entry.

SLOPE_MAP:

slope_map { SLOPE_MAP_BODY } [BLEND_MAP_MODIFIERS]

SLOPE_MAP_BODY:

SLOPE_MAP_IDENTIFIER | SLOPE_MAP_ENTRY...

There may be from 2 to 256 map entries.

SLOPE_MAP_ENTRY:

[ FLOAT, < F_HEIGHT, F_SLOPE > ]

The brackets here are part of the map entry.

BUMP_MAP:

bump_map { BITMAP_IMAGE [BUMP_MAP_MODIFIERS] }

BUMP_MAP_MODIFIERS:

[BITMAP_MODIFIERS] & [BUMP_METHOD] & [bump_size FLOAT]

BUMP_METHOD:

use_index | use_color | use_colour

NORMAL_MODIFIERS:

[PATTERN_MODIFIERS] & [bump_size FLOAT] & [no_bump_scale [BOOL]] & [accuracy FLOAT]

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10.1.10.6  Finish

Describe the reflective properties of a surface:

FINISH:

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finish { [FINISH_IDENTIFIER] [FINISH_ITEMS] }

FINISH_ITEMS:

[ambient COLOR] & [diffuse FLOAT] & [brilliance FLOAT] & [PHONG] & [SPECULAR] & [REFLECTION] & [IRID] & [crand FLOAT] & [conserve_energy [BOOL]]

PHONG:

phong FLOAT & [phong_size FLOAT] & [metallic [FLOAT]]

SPECULAR:

specular FLOAT & [roughness FLOAT] & [metallic [FLOAT]]

REFLECTION:

reflection COLOR [reflection_exponent FLOAT] |
reflection { [COLOR,] COLOR [REFLECTION_ITEMS] }

REFLECTION_ITEMS:

[fresnel BOOL] & [falloff FLOAT] & [exponent FLOAT] & [metallic [FLOAT]]

Must also use interior {ior FLOAT} in the object when fresnel is used.

IRID:

irid { F_AMOUNT [IRID_ITEMS] }

IRID_ITEMS:

[thickness FLOAT] & [turbulence FLOAT]

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10.1.10.7  Pattern

Specify a pattern function for a texture, pigment, normal or density:

MAP_PATTERN:

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AGATE | average | boxed | bozo | bumps | cells | CRACKLE | cylindrical | DENSITY_FILE | dents | FACETS | FRACTAL | function { FN_FLOAT } | gradient VECTOR | granite | IMAGE_PATTERN | leopard | marble | onion | pigment_pattern { PIGMENT_BODY } | planar | QUILTED | radial | ripples | SLOPE | spherical | spiral1 I_NUM_ARMS | spiral2 I_NUM_ARMS | spotted | waves | wood | wrinkles

AGATE:

agate [agate_turb FLOAT]

CRACKLE:

crackle [CRACKLE_TYPES]

CRACKLE_TYPES:

[form VECTOR] & [metric FLOAT] & [offset FLOAT] & [solid]

DENSITY_FILE:

density_file df3 FILE_NAME [interpolate DENSITY_INTERPOLATE]

DENSITY_INTERPOLATE:

0 | 1

FACETS:

facets FACETS_TYPE

Note, facets can only be used as a normal pattern.

FACETS_TYPE:

coords F_SCALE | size F_SIZE_FACTOR

FRACTAL:

MANDELBROT_FRACTAL | JULIA_FRACTAL | MAGNET_MANDEL_FRACTAL | MAGNET_JULIA_FRACTAL

MANDELBROT_FRACTAL:

mandel I_ITERATIONS [exponent INT] [exterior EXTERIOR_TYPE, F_FACTOR] [interior INTERIOR_TYPE, F_FACTOR]

JULIA_FRACTAL:

julia V2_COMPLEX, I_ITERATIONS [exponent INT] [exterior EXTERIOR_TYPE, F_FACTOR] [interior INTERIOR_TYPE, F_FACTOR]

MAGNET_MANDEL_FRACTAL:

magnet MAGNET_TYPE mandel I_ITERATIONS [exterior EXTERIOR_TYPE, F_FACTOR] [interior INTERIOR_TYPE, F_FACTOR]

MAGNET_TYPE:

1 | 2

MAGNET_JULIA_FRACTAL:

magnet MAGNET_TYPE julia V2_COMPLEX, I_ITERATIONS [exterior EXTERIOR_TYPE, F_FACTOR] [interior INTERIOR_TYPE, F_FACTOR]

EXTERIOR_TYPE:

0 | 1 | 2 | 3 | 4 | 5 | 6

INTERIOR_TYPE:

0 | 1 | 2 | 3 | 4 | 5 | 6

IMAGE_PATTERN:

image_pattern {BITMAP_IMAGE [IMAGE_PATTERN_MODIFIERS] }

IMAGE_PATTERN_MODIFIERS:

[BITMAP_MODIFIERS] & [use_alpha]

QUILTED:

quilted [control0 FLOAT] [control1 FLOAT]

SLOPE:

slope { V_DIRECTION [, F_LOW_SLOPE, F_HIGH_SLOPE ] [altitude VECTOR [, F_LOW_ALT, F_HIGH_ALT ]] }

The slope pattern does not work in media densities.

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10.1.10.8  Pattern Modifiers

Modify the evaluation of a pattern function:

PATTERN_MODIFIERS:

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[TURBULENCE] & [WARP...] & [TRANSFORMATION...] & [noise_generator NG_TYPE]

NG_TYPE:

1 | 2 | 3

TURBULENCE:

turbulence VECTOR & [octaves INT] & [omega FLOAT] & [lambda FLOAT]

WARP:

warp { WARP_ITEM }

WARP_ITEM:

REPEAT_WARP | BLACK_HOLE_WARP | TURBULENCE | CYLINDRICAL_WARP | SPHERICAL_WARP | TOROIDAL_WARP | PLANAR_WARP

REPEAT_WARP:

repeat VECTOR [offset VECTOR] [flip VECTOR]

BLACK_HOLE_WARP:

black_hole V_LOCATION, F_RADIUS [BLACK_HOLE_ITEMS]

BLACK_HOLE_ITEMS:

[strength FLOAT] & [falloff FLOAT] & [inverse] & [repeat VECTOR [turbulence VECTOR]]

CYLINDRICAL_WARP:

cylindrical [orientation VECTOR] [dist_exp FLOAT]

SPHERICAL_WARP:

spherical [orientation VECTOR] [dist_exp FLOAT]

TOROIDAL_WARP:

toroidal [orientation VECTOR] [dist_exp FLOAT] [major_radius FLOAT]

PLANAR_WARP:

planar [V_NORMAL, F_DISTANCE]

Modify the usage of a blend map:

BLEND_MAP_MODIFIERS:

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[frequency FLOAT] & [phase FLOAT] & [WAVEFORM]

WAVEFORM:

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ramp_wave | triangle_wave | sine_wave | scallop_wave | cubic_wave | poly_wave [F_EXPONENT]

Specify a two-dimensional bitmap image for a pattern:

BITMAP_IMAGE:

FUNCTION_IMAGE | BITMAP_TYPE FILE_NAME

FUNCTION_IMAGE:

Jump to SDL

function I_WIDTH, I_HEIGHT { FUNCTION_IMAGE_BODY }

FUNCTION_IMAGE_BODY:

PIGMENT | FN_FLOAT | pattern { PATTERN [PATTERN_MODIFIERS] }

PATTERN:

MAP_PATTERN | brick [BRICK_ITEMS] | checker | hexagon | object { LIST_OBJECT }

BITMAP_TYPE:

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gif | tga | iff | ppm | pgm | png | jpeg | tiff | sys

Modify how a 2-D bitmap is to be applied to a 3-D surface:

BITMAP_MODIFIERS:

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[once] & [map_type MAP_TYPE] & [interpolate INTERPOLATE_TYPE]

MAP_TYPE:

0 | 1 | 2 | 5

INTERPOLATE_TYPE:

2 | 4

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