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sdf/colors

src/sdf/colors.tur

ColoredSDF: SdfExpr paired with per-leaf color and object ID.

Since: Phase 2

defn

csdf-sdf

(csdf-sdf [cn : int] :)

the combined SdfExpr handle for this colored subtree.

Parameters
cnColoredSDF handle
Returns

SdfExpr handle.

Example
(sdf-eval (csdf-sdf scene) 0.0 0.0 0.0)

Since: Phase 2

defn

csdf-left

(csdf-left [cn : int] :)

left colored child handle (0 for leaves). Since: Phase 3

defn

csdf-right

(csdf-right [cn : int] :)

right colored child handle (0 for leaves and unaries). Since: Phase 3

defn

csdf-r

(csdf-r [cn : int] :)

red color component of a leaf node. Since: Phase 3

defn

csdf-g

(csdf-g [cn : int] :)

green color component of a leaf node. Since: Phase 3

defn

csdf-b

(csdf-b [cn : int] :)

blue color component of a leaf node. Since: Phase 3

defn

csdf-object-id

(csdf-object-id [cn : int] :)

object ID of a colored node (-1 for interior). Since: Phase 3

defn

csdf-free

(csdf-free [cn : int] :)

free a ColoredSDF tree and its associated SdfExpr tree.

Parameters
cnColoredSDF handle; safe to call with 0.
Example
(csdf-free scene)

Since: Phase 2

defn

colored-sphere

(colored-sphere [cx : float cy : float cz : float r : float cr : float cg : float cb : float objid : int] :)

sphere centred at (cx,cy,cz) with radius r and RGB color.

Parameters
cx cy cz -- centre position
rradius (> 0)
cr cg cb -- diffuse RGB color in [0, 1]
objidobject ID (>= 0; unique per colored leaf in the scene)
Returns

ColoredSDF handle.

Example
(colored-sphere 0.0 0.0 0.0 1.5  1.0 0.0 0.0  1)

Since: Phase 2

defn

colored-box

(colored-box [lx : float ly : float lz : float hx : float hy : float hz : float cr : float cg : float cb : float objid : int] :)

AABB from (lx,ly,lz) to (hx,hy,hz) with RGB color.

Parameters
lx ly lz -- minimum corner
hx hy hz -- maximum corner
cr cg cb -- diffuse RGB color in [0, 1]
objidobject ID (>= 0)
Returns

ColoredSDF handle.

Example
(colored-box -1.0 -1.0 -1.0  1.0 1.0 1.0  0.0 1.0 0.0  2)

Since: Phase 2

defn

colored-cylinder

(colored-cylinder [cx : float cy : float cz : float r : float cr : float cg : float cb : float objid : int] :)

infinite cylinder through (cx,cy,*) radius r with color.

Since: Phase 2

defn

colored-plane

(colored-plane [nx : float ny : float nz : float d : float cr : float cg : float cb : float objid : int] :)

infinite plane n.p + d = 0 with given color.

Since: Phase 2

defn

colored-union

(colored-union [a : int b : int] :)

CSG union of two colored SDFs.

Parameters
a b -- ColoredSDF handles
Returns

Combined ColoredSDF handle.

Example
(colored-union
    (colored-sphere -1.0 0.0 0.0 0.8  1.0 0.0 0.0  1)
    (colored-sphere  1.0 0.0 0.0 0.8  0.0 1.0 0.0  2))

Since: Phase 2

defn

colored-intersection

(colored-intersection [a : int b : int] :)

CSG intersection of two colored SDFs.

Since: Phase 2

defn

colored-difference

(colored-difference [a : int b : int] :)

CSG difference: a minus b.

Parameters
abase shape
bshape to subtract

Since: Phase 2

defn

colored-smooth-union

(colored-smooth-union [a : int b : int k : float] :)

smooth union of two colored SDFs (Quilez blend).

Parameters
a b -- ColoredSDF handles
kblend radius (>= 0)

Since: Phase 2

defn

colored-translate

(colored-translate [cn : int tx : float ty : float tz : float] :)

translate a colored SDF by (tx, ty, tz).

Parameters
cnColoredSDF handle
tx ty tz -- translation vector
Returns

Translated ColoredSDF handle.

Example
(colored-translate my-sphere 0.0 2.0 0.0)

Since: Phase 2

defn

colored-torus

(colored-torus [cx : float cy : float cz : float big-r : float small-r : float cr : float cg : float cb : float objid : int] :)

torus with a fixed surface color.

Parameters
cx cy cz -- centre position
big-rring radius
small-rtube radius
cr cg cb -- diffuse RGB color in [0, 1]
objidobject ID (>= 0)
Example
(colored-torus 0.0 0.0 0.0 1.5 0.3  0.8 0.3 0.1  5)

Since: Phase 5

defn

colored-capsule

(colored-capsule [ax : float ay : float az : float bx : float by : float bz : float r : float cr : float cg : float cb : float objid : int] :)

capsule with a fixed surface color.

Parameters
ax ay az -- endpoint A
bx by bz -- endpoint B
rcapsule radius
cr cg cb -- diffuse RGB color in [0, 1]
objidobject ID (>= 0)
Example
(colored-capsule 0.0 -1.0 0.0  0.0 1.0 0.0  0.4  0.2 0.7 0.9  6)

Since: Phase 5

defn

colored-smooth-intersection

(colored-smooth-intersection [a : int b : int k : float] :)

smooth CSG intersection of two colored SDFs.

Parameters
a b -- ColoredSDF handles
kblend radius (>= 0)

Since: Phase 5

defn

colored-repeat-inf

(colored-repeat-inf [cn : int px : float py : float pz : float] :)

infinite repetition of a colored SDF.

Parameters
cnColoredSDF handle to repeat
px py pz -- repetition period per axis (0 = no repetition on that axis)
Example
(colored-repeat-inf (colored-sphere 0.0 0.0 0.0 0.3  1.0 0.0 0.0  1)
                       1.5 1.5 1.5)

Since: Phase 5

defn

colored-repeat-fin

(colored-repeat-fin [cn : int px : float py : float pz : float lx : float ly : float lz : float] :)

finite repetition of a colored SDF.

Parameters
cnColoredSDF handle to repeat
px py pz -- repetition period per axis (0 = no repetition)
lx ly lz -- number of repetitions on each side of the origin
Example
(colored-repeat-fin sphere 2.0 2.0 2.0  3.0 3.0 3.0)

Since: Phase 5

Internal definitions
csdf--make-leaf-- allocate a ColoredSDF leaf.
csdf--make-node-- allocate a ColoredSDF interior node.