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/*
* 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.
*/
/** \file
* \ingroup DNA
*/
#pragma once
#include "DNA_vec_types.h"
/** Number of points in high resolution table is dynamic up to a maximum. */
#define PROF_TABLE_MAX 512
/** Number of table points per control point. */
#define PROF_RESOL 16
/** Dynamic size of widget's high resolution table. Input should be profile->totpoint. */
#define PROF_TABLE_LEN(n_pts) min_ii(PROF_TABLE_MAX, (((n_pts - 1)) * PROF_RESOL) + 1)
/**
* Each control point that makes up the profile.
* \note The flags use the same enum as Bezier curves, but they aren't guaranteed
* to have identical functionality, and all types aren't implemented.
*/
typedef struct CurveProfilePoint {
/** Location of the point, keep together. */
float x, y;
/** Flag selection state and others. */
short flag;
/** Flags for both handle's type (eBezTriple_Handle auto, vect, free, and aligned supported). */
char h1, h2;
/** Handle locations, keep together.
* \note For now the two handle types are set to the same type in RNA. */
float h1_loc[2];
float h2_loc[2];
char _pad[4];
/** Runtime pointer to the point's profile for updating the curve with no direct reference. */
struct CurveProfile *profile;
} CurveProfilePoint;
/** #CurveProfilePoint.flag */
enum {
PROF_SELECT = (1 << 0),
PROF_H1_SELECT = (1 << 1),
PROF_H2_SELECT = (1 << 2),
};
/** Defines a profile. */
typedef struct CurveProfile {
/** Number of user-added points that define the profile. */
short path_len;
/** Number of sampled points. */
short segments_len;
/** Preset to use when reset. */
int preset;
/** Sequence of points defining the shape of the curve. */
CurveProfilePoint *path;
/** Display and evaluation table at higher resolution for curves. */
CurveProfilePoint *table;
/** The positions of the sampled points. Used to display a preview of where they will be. */
CurveProfilePoint *segments;
/** Flag for mode states, sampling options, etc... */
int flag;
/** Used for keeping track how many times the widget is changed. */
int changed_timestamp;
/** Widget's current view, and clipping rect (is default rect too). */
rctf view_rect, clip_rect;
} CurveProfile;
/** #CurveProfile.flag */
enum {
PROF_USE_CLIP = (1 << 0), /* Keep control points inside bounding rectangle. */
/* PROF_SYMMETRY_MODE = (1 << 1), Unused for now. */
PROF_SAMPLE_STRAIGHT_EDGES = (1 << 2), /* Sample extra points on straight edges. */
PROF_SAMPLE_EVEN_LENGTHS = (1 << 3), /* Put segments evenly spaced along the path. */
PROF_DIRTY_PRESET = (1 << 4), /* Marks when the dynamic preset has been changed. */
};
typedef enum eCurveProfilePresets {
PROF_PRESET_LINE = 0, /* Default simple line between end points. */
PROF_PRESET_SUPPORTS = 1, /* Support loops for a regular curved profile. */
PROF_PRESET_CORNICE = 2, /* Molding type example. */
PROF_PRESET_CROWN = 3, /* Second molding example. */
PROF_PRESET_STEPS = 4, /* Dynamic number of steps defined by segments_len. */
} eCurveProfilePresets;
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