1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright 2016-2020 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
# This file is part of Power Sequencer.
import bpy
from .utils.functions import find_sequences_after
from .utils.functions import convert_duration_to_frames
from .utils.global_settings import SequenceTypes
from .utils.doc import doc_name, doc_idname, doc_brief, doc_description
class POWER_SEQUENCER_OT_crossfade_add(bpy.types.Operator):
"""
*brief* Adds cross fade between selected sequence and the closest sequence to its right
Based on the active strip, finds the closest next sequence of a similar type, moves it
so it overlaps the active strip, and adds a gamma cross effect between them. Works with
MOVIE, IMAGE and META strips
"""
doc = {
"name": doc_name(__qualname__),
"demo": "https://i.imgur.com/ZyEd0jD.gif",
"description": doc_description(__doc__),
"shortcuts": [
({"type": "C", "value": "PRESS", "ctrl": True, "alt": True}, {}, "Add Crossfade")
],
"keymap": "Sequencer",
}
bl_idname = doc_idname(__qualname__)
bl_label = doc["name"]
bl_description = doc_brief(doc["description"])
bl_options = {"REGISTER", "UNDO"}
crossfade_duration: bpy.props.FloatProperty(
name="Crossfade Duration", description="The duration of the crossfade", default=0.5, min=0
)
auto_move_strip: bpy.props.BoolProperty(
name="Auto Move Strip",
description=(
"When true, moves the second strip so the crossfade"
" is of the length set in 'Crossfade Length'"
),
default=True,
)
@classmethod
def poll(cls, context):
return context.selected_sequences
def execute(self, context):
sorted_selection = sorted(context.selected_sequences, key=lambda s: s.frame_final_start)
for s in sorted_selection:
s_next = self.get_next_sequence_after(context, s)
s_to_offset = s_next.input_1 if hasattr(s_next, "input_1") else s_next
if self.auto_move_strip:
offset = s_to_offset.frame_final_start - s.frame_final_end
s_to_offset.frame_start -= offset
if s_to_offset.frame_final_start == s.frame_final_end:
self.offset_sequence_handles(context, s, s_to_offset)
self.apply_crossfade(context, s, s_next)
return {"FINISHED"}
def get_next_sequence_after(self, context, sequence):
"""
Returns the first sequence after `sequence` by frame_final_start
"""
next_sequence = None
next_in_channel = [
s for s in find_sequences_after(context, sequence) if s.channel == sequence.channel
]
next_transitionable = (s for s in next_in_channel if s.type in SequenceTypes.TRANSITIONABLE)
try:
next_sequence = min(next_transitionable, key=lambda s: s.frame_final_start)
except ValueError:
pass
return next_sequence
def apply_crossfade(self, context, strip_from, strip_to):
for s in bpy.context.selected_sequences:
s.select = False
strip_from.select = True
strip_to.select = True
context.scene.sequence_editor.active_strip = strip_to
bpy.ops.sequencer.effect_strip_add(type="GAMMA_CROSS")
def offset_sequence_handles(self, context, sequence_1, sequence_2):
"""
Moves the handles of the two sequences before adding the crossfade
"""
fade_duration = convert_duration_to_frames(context, self.crossfade_duration)
fade_offset = fade_duration / 2
if hasattr(sequence_1, "input_1"):
sequence_1.input_1.frame_final_end -= fade_offset
else:
sequence_1.frame_final_end -= fade_offset
if hasattr(sequence_2, "input_1"):
sequence_2.input_1.frame_final_start += fade_offset
else:
sequence_2.frame_final_start += fade_offset
|
