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package aseprite_file_handler_utility
import "core:time"
import "core:slice"
@(require) import "core:fmt"
@(require) import "core:log"
import ase ".."
get_animation_from_doc :: proc(
doc: ^ase.Document, anim: ^Animation,
use_tag := "", alloc := context.allocator
) -> (err: Errors) {
info: Info
get_info(doc, &info, alloc) or_return
defer destroy(&info)
return get_animation_from_info(info, anim, use_tag)
}
get_animation_from_info :: proc (
info: Info, anim: ^Animation, use_tag := "",
) -> (err: Errors) {
context.allocator = info.allocator
s, f := 0, len(info.frames)
tag: Tag
if use_tag != "" {
for t in info.tags {
if t.name == use_tag {
if len(info.frames) < t.to || len(info.frames) < t.from {
return Animation_Error.Tag_Index_Out_Of_Bounds
}
tag = t
s = t.from
f = t.to+1
break
}
}
if tag == {} {
return Animation_Error.Tag_Not_Found
}
}
if anim.fps == 0 {
anim.fps = 30
}
anim.md = info.md
anim_frames := make([dynamic][]byte) or_return
defer if err != nil { delete(anim_frames) }
pos: int
for frame in info.frames[s:f] {
img := get_image_bytes_from_frame(frame, info) or_return
defer delete(img)
to_add := f64(frame.duration) * f64(anim.fps) / 1000
for _ in 0..<to_add {
append_elem(&anim_frames, slice.clone(img) or_return) or_return
pos += 1
}
}
if tag.direction == .Reverse || tag.direction == .Ping_Pong_Reverse {
slice.reverse(anim_frames[:])
}
if tag.direction == .Ping_Pong || tag.direction == .Ping_Pong_Reverse {
rev := slice.clone(anim_frames[:])
defer delete(rev)
slice.reverse(rev)
append_elems(&anim_frames, ..rev) or_return
}
anim.frames = anim_frames[:]
anim.length = time.Second * time.Duration(len(anim_frames) / anim.fps)
return
}
// Assumes 30 FPS & 100ms Frame Duration
get_animation_from_images :: proc(imgs: []Image, md: Metadata, anim: ^Animation, alloc := context.allocator) -> (err: Errors) {
context.allocator = alloc
anim.fps = 30
anim.md = md
anim.length = time.Second * time.Duration(len(imgs) / 10)
frames := make([dynamic][]byte, 0, 3 * len(imgs)) or_return
defer if err != nil { delete(frames) }
for img in imgs {
frame := slice.clone(img.data) or_return
append_elem(&frames, frame) or_return
frame = slice.clone(img.data) or_return
append_elem(&frames, frame) or_return
frame = slice.clone(img.data) or_return
append_elem(&frames, frame) or_return
}
anim.frames = frames[:]
return
}
// Assumes 30 FPS & 100ms Frame Duration
get_animation_from_bytes :: proc(imgs: [][]byte, md: Metadata, anim: ^Animation, alloc := context.allocator) -> (err: Errors) {
context.allocator = alloc
anim.fps = 30
anim.md = md
anim.length = time.Second * time.Duration(len(imgs) / 10)
frames := make([dynamic][]byte, 0, 3 * len(imgs)) or_return
defer if err != nil { delete(frames) }
for img in imgs {
append_elem(&frames, slice.clone(img) or_return) or_return
append_elem(&frames, slice.clone(img) or_return) or_return
append_elem(&frames, slice.clone(img) or_return) or_return
}
anim.frames = frames[:]
return
}
get_animation :: proc {
get_animation_from_doc,
get_animation_from_info,
get_animation_from_images,
get_animation_from_bytes,
}
// Returns a new image set with Red/Blue Tint or Merge Onion Skin
apply_onion_skin :: proc(
imgs: []Image, opacity := 69, merge := false,
alloc := context.allocator
) -> (frames: []Image, err: Errors) {
context.allocator = alloc
frames = make([]Image, len(imgs)) or_return
defer if err != nil { delete(frames) }
blank := make([]byte, len(imgs[0].data)) or_return
defer delete(blank)
cur, next: []byte
last := blank
defer if cur != nil { delete(cur) }
for img, pos in imgs {
if pos < len(imgs)-1 {
next = imgs[pos+1].data
} else {
next = blank
}
cur = slice.clone(img.data) or_return
if merge {
blend_bytes(last, cur, opacity, .Merge) or_return
blend_bytes(next, cur, opacity, .Merge) or_return
} else {
blend_bytes(last, cur, opacity, .Red_Tint) or_return
blend_bytes(next, cur, opacity, .Blue_Tint) or_return
}
frames[pos] = img
frames[pos].data = cur
last = cur
}
return
}
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