/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once

/** \file
 * \ingroup bke
 */

namespace blender {

struct Object;
struct ProjCameraInfo;

/**
 * Create UV info from the camera, needs to be freed.
 *
 * \param rotmat: can be `obedit->object_to_world().ptr()` when uv project is used.
 * \param winx, winy: can be from `scene->r.xsch / ysch`.
 */
struct ProjCameraInfo *BKE_uvproject_camera_info(const struct Object *ob,
                                                 const float rotmat[4][4],
                                                 float winx,
                                                 float winy);

/**
 * Apply UV from #ProjCameraInfo (camera).
 */
void BKE_uvproject_from_camera(float target[2],
                               const float source[3],
                               const struct ProjCameraInfo *uci);

/**
 * Apply uv from perspective matrix.
 * \param persmat: Can be `rv3d->persmat`.
 */
void BKE_uvproject_from_view(float target[2],
                             const float source[3],
                             const float persmat[4][4],
                             const float rotmat[4][4],
                             float winx,
                             float winy);

/**
 * Apply orthographic UVs.
 */
void BKE_uvproject_from_view_ortho(float target[2],
                                   const float source[3],
                                   const float rotmat[4][4]);

/**
 * So we can adjust scale with keeping the struct private.
 */
void BKE_uvproject_camera_info_scale(ProjCameraInfo *uci, float scale_x, float scale_y);

/*
 * Free info. */
void BKE_uvproject_camera_info_free(ProjCameraInfo *uci);

}  // namespace blender