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triangulate-image.r3
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triangulate-image.r3
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Rebol [
Title: "Trianguale image (resize and add line effect)"
needs: 3.11.0 ; to automatically install Blend2D extension
]
random/seed 2021
import 'triangulate
import 'blend2d ;- Blend2D is used to draw images
inp-img:
out-img: none
sc: 10.0
pwr: 6.9
particles: 24000
light-mode?: on
bg: 0.0.0
bg2: 0.0.0.10 ; used to fade image between steps
ln-w1: 1
ln-w2: 4
ln-c1: 0.28.0.128
ln-c2: 0.155.55.200
pt-w: 16
mode: 3
steps: 50
inp: object [
points: make vector! compose [decimal! 64 (particles * 2)]
attributes: make vector! compose [decimal! 64 (particles)]
; report: true
]
out: object [
points: none
attributes: none
edges: none
triangles: none
; voronoi output:
v-points: none
v-edges: none
v-norms: none
]
drw-points: make block! 4 * particles
init-points: func [
particles [integer!]
image [image!]
pwr [number!]
/local size p c
][
insert clear drw-points [
line-width 0 point-size :pt-w alpha 30%
]
size: image/size
while [particles > 0][
p: random size
rgb: image/(p)
hsv: rgb-to-hsv rgb
accepted?: either light-mode? [
(random 0.5) < power (hsv/:mode / 255) pwr
][ (random 0.5) < power ((255 - hsv/:mode) / 255) pwr]
if accepted? [
inp/points/1: p/x: (p/x * sc) - random sc
inp/points/2: p/y: (p/y * sc) - random sc
inp/points: skip inp/points 2
inp/attributes/:particles: to-integer to-binary rgb
repend drw-points ['fill rgb 'point p]
-- particles
]
]
inp/points: head inp/points
;? inp
inp
]
draw-frame: does [
;prin "init points: " print dt [
init-points particles inp-img pwr
;]
;prin "triangulate: " print dt [
triangulate inp out
;]
;if find out 'v-points [sc * out/v-points]
if block? select out 'v-edges [
temp: make block! (length? out/v-points) / 2
norms: make block! 1000
while [not tail? out/v-edges][
either out/v-edges/2 = -1 [
i: index? out/v-edges
norm-x: pick out/v-norms i
norm-y: pick out/v-norms i + 1
;print [norm-x norm-y]
append append norms out/v-edges/1 out/v-edges/2
append append norms norm-x norm-y
][
append append temp out/v-edges/1 out/v-edges/2
]
out/v-edges: skip out/v-edges 2
]
;? norms
out/v-edges: make vector! compose/only [integer! 32 (temp)]
]
;? out/v-points
;prin "draw image: "
;print dt [
draw out-img [
fill :bg2 fill-all fill off
point-size 4
; fill white point :out/points
fill 55.200.100.100 point :out/v-points
line-width :ln-w1 pen :ln-c1
line :out/points :out/edges
line-width :ln-w2 pen :ln-c2
line :out/v-points :out/v-edges
]
draw out-img drw-points
;]
;? out/v-norms
;? out
;print "draw done"
]
triangulate-image: func[file [file!]][
print [as-green "Triangulating image:" as-yellow file]
try/with [inp-img: load file][
print "Failed to load an image!"
quit
]
;out-img: resize inp-img sc * inp-img/size ;
out-img: make image! reduce [sc * inp-img/size bg]
out-file: join %out/ file
print dt [loop steps [draw-frame]]
try/with [
save out-file resize out-img 50%
][ print "Failed to save the result."]
;view load out-file
out-file
]
make-dir %out/
ln-c1: 0.28.0.128
ln-c2: 0.55.55.200
ln-w2: 8
steps: 1
triangulate-image %Vermeer.jpg
ln-c1: 255.0.0.130
ln-c2: 0.55.55.200
ln-w2: 6
steps: 10
particles: 14000
triangulate-image %Spiral_Tribe.jpg