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blender-archive/source/blender/blenkernel/BKE_curveprofile.h
Hans Goudey baff05ad1c UI: Add Free Handle Types to CurveProfile Widget
Under the hood the CurveProfile widget (used for bevel custom profiles)
uses a bezier curve, but right now though it only supports two of the
bezier curve handle types, vector and auto. This patch adds support for
free handles and adds all of the logic for editing them.

This is the first step to the ability to import and export curve objects
in the widget.

There's some code cleanup in curveprofile.c. Movement for handles and
control points is abstracted to functions there rather than happening
in interface_handlers.c.

An "Apply Preset" button is also added, which solves a confusing issue
where you apply a preset, then change the number of samples and the
preset doesn't change. The button makes it clear that the preset needs
to be reapplied.

Reviewed By: Severin

Differential Revision: https://developer.blender.org/D6470
2020-06-24 11:50:01 -04:00

106 lines
3.9 KiB
C++

/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (C) 2019 Blender Foundation.
* All rights reserved.
*/
#ifndef __BKE_CURVEPROFILE_H__
#define __BKE_CURVEPROFILE_H__
/** \file
* \ingroup bke
*/
#ifdef __cplusplus
extern "C" {
#endif
struct BlendWriter;
struct BlendDataReader;
struct CurveProfile;
struct CurveProfilePoint;
void BKE_curveprofile_set_defaults(struct CurveProfile *profile);
struct CurveProfile *BKE_curveprofile_add(int preset);
void BKE_curveprofile_free_data(struct CurveProfile *profile);
void BKE_curveprofile_free(struct CurveProfile *profile);
void BKE_curveprofile_copy_data(struct CurveProfile *target, const struct CurveProfile *profile);
struct CurveProfile *BKE_curveprofile_copy(const struct CurveProfile *profile);
bool BKE_curveprofile_move_handle(struct CurveProfilePoint *point,
const bool handle_1,
const bool snap,
const float delta[2]);
bool BKE_curveprofile_move_point(struct CurveProfile *profile,
struct CurveProfilePoint *point,
const bool snap,
const float delta[2]);
bool BKE_curveprofile_remove_point(struct CurveProfile *profile, struct CurveProfilePoint *point);
void BKE_curveprofile_remove_by_flag(struct CurveProfile *profile, const short flag);
struct CurveProfilePoint *BKE_curveprofile_insert(struct CurveProfile *profile, float x, float y);
void BKE_curveprofile_selected_handle_set(struct CurveProfile *profile, int type_1, int type_2);
void BKE_curveprofile_reverse(struct CurveProfile *profile);
void BKE_curveprofile_reset(struct CurveProfile *profile);
void BKE_curveprofile_create_samples(struct CurveProfile *profile,
int segments_len,
bool sample_straight_edges,
struct CurveProfilePoint *r_samples);
void BKE_curveprofile_initialize(struct CurveProfile *profile, short segments_len);
/* Called for a complete update of the widget after modifications */
enum {
PROF_UPDATE_NONE = 0,
PROF_UPDATE_REMOVE_DOUBLES = (1 << 0),
PROF_UPDATE_CLIP = (1 << 1),
};
void BKE_curveprofile_update(struct CurveProfile *profile, const int update_flags);
/* Need to find the total length of the curve to sample a portion of it */
float BKE_curveprofile_total_length(const struct CurveProfile *profile);
void BKE_curveprofile_create_samples_even_spacing(struct CurveProfile *profile,
int segments_len,
struct CurveProfilePoint *r_samples);
/* Length portion is the fraction of the total path length where we want the location */
void BKE_curveprofile_evaluate_length_portion(const struct CurveProfile *profile,
float length_portion,
float *x_out,
float *y_out);
void BKE_curveprofile_blend_write(struct BlendWriter *writer, const struct CurveProfile *profile);
void BKE_curveprofile_blend_read(struct BlendDataReader *reader, struct CurveProfile *profile);
#ifdef __cplusplus
}
#endif
#endif