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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2004 Blender Foundation. All rights reserved. */
#pragma once
/** \file
* \ingroup sequencer
*/
#ifdef __cplusplus
extern "C" {
#endif
struct ListBase;
struct Scene;
struct SeqCollection;
struct Sequence;
int SEQ_transform_get_left_handle_frame(struct Sequence *seq);
int SEQ_transform_get_right_handle_frame(struct Sequence *seq);
void SEQ_transform_set_left_handle_frame(struct Sequence *seq, int val);
void SEQ_transform_set_right_handle_frame(struct Sequence *seq, int val);
/**
* Use to impose limits when dragging/extending - so impossible situations don't happen.
* Can't use the #SEQ_LEFTSEL and #SEQ_LEFTSEL directly because the strip may be in a meta-strip.
*/
void SEQ_transform_handle_xlimits(struct Sequence *seq, int leftflag, int rightflag);
bool SEQ_transform_sequence_can_be_translated(struct Sequence *seq);
/**
* Used so we can do a quick check for single image seq
* since they work a bit differently to normal image seq's (during transform).
*/
bool SEQ_transform_single_image_check(struct Sequence *seq);
void SEQ_transform_fix_single_image_seq_offsets(struct Sequence *seq);
bool SEQ_transform_test_overlap(struct ListBase *seqbasep, struct Sequence *test);
bool SEQ_transform_test_overlap_seq_seq(struct Sequence *seq1, struct Sequence *seq2);
void SEQ_transform_translate_sequence(struct Scene *scene, struct Sequence *seq, int delta);
/**
* \return 0 if there weren't enough space.
*/
bool SEQ_transform_seqbase_shuffle_ex(struct ListBase *seqbasep,
struct Sequence *test,
struct Scene *evil_scene,
int channel_delta);
bool SEQ_transform_seqbase_shuffle(struct ListBase *seqbasep,
struct Sequence *test,
struct Scene *evil_scene);
bool SEQ_transform_seqbase_shuffle_time(struct SeqCollection *strips_to_shuffle,
struct ListBase *seqbasep,
struct Scene *evil_scene,
struct ListBase *markers,
bool use_sync_markers);
/**
* Check if the selected seq's reference unselected seq's.
*/
bool SEQ_transform_seqbase_isolated_sel_check(struct ListBase *seqbase);
/**
* Move strips and markers (if not locked) that start after timeline_frame by delta frames
*
* \param scene: Scene in which strips are located
* \param seqbase: ListBase in which strips are located
* \param delta: offset in frames to be applied
* \param timeline_frame: frame on timeline from where strips are moved
*/
void SEQ_transform_offset_after_frame(struct Scene *scene,
struct ListBase *seqbase,
int delta,
int timeline_frame);
/* Image transformation. */
void SEQ_image_transform_mirror_factor_get(const struct Sequence *seq, float r_mirror[2]);
/**
* Get strip transform origin offset from image center
* NOTE: This function does not apply axis mirror.
*
* \param scene: Scene in which strips are located
* \param seq: Sequence to calculate image transform origin
* \param r_origin: return value
*/
void SEQ_image_transform_origin_offset_pixelspace_get(const struct Scene *scene,
const struct Sequence *seq,
float r_origin[2]);
/**
* Get 4 corner points of strip image, optionally without rotation component applied.
* Corner vectors are in viewport space.
*
* \param scene: Scene in which strips are located
* \param seq: Sequence to calculate transformed image quad
* \param apply_rotation: Apply sequence rotation transform to the quad
* \param r_quad: array of 4 2D vectors
*/
void SEQ_image_transform_quad_get(const struct Scene *scene,
const struct Sequence *seq,
bool apply_rotation,
float r_quad[4][2]);
/**
* Get 4 corner points of strip image. Corner vectors are in viewport space.
*
* \param scene: Scene in which strips are located
* \param seq: Sequence to calculate transformed image quad
* \param r_quad: array of 4 2D vectors
*/
void SEQ_image_transform_final_quad_get(const struct Scene *scene,
const struct Sequence *seq,
float r_quad[4][2]);
void SEQ_image_preview_unit_to_px(const struct Scene *scene,
const float co_src[2],
float co_dst[2]);
void SEQ_image_preview_unit_from_px(const struct Scene *scene,
const float co_src[2],
float co_dst[2]);
#ifdef __cplusplus
}
#endif
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