59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bke
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*/
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#pragma once
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#include "BLI_math_matrix.hh"
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#include "BLI_span.hh"
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struct Depsgraph;
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struct Object;
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namespace blender::bke::crazyspace {
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/**
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* Contains information about how points have been deformed during evaluation.
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* This allows mapping edits on evaluated data back to original data in some cases.
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*/
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struct GeometryDeformation {
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/**
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* Positions of the deformed points. This may also point to the original position if no
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* deformation data is available.
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*/
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Span<float3> positions;
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/**
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* Matrices that transform point translations on original data into corresponding translations in
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* evaluated data. This may be empty if not available.
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*/
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Span<float3x3> deform_mats;
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float3 translation_from_deformed_to_original(const int position_i,
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const float3 &translation) const
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{
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if (this->deform_mats.is_empty()) {
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return translation;
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}
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const float3x3 &deform_mat = this->deform_mats[position_i];
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return math::transform_point(math::invert(deform_mat), translation);
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}
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};
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/**
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* During evaluation of the object, deformation data may have been generated for this object. This
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* function either retrieves the deformation data from the evaluated object, or falls back to
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* returning the original data.
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*/
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GeometryDeformation get_evaluated_curves_deformation(const Object *ob_eval, const Object &ob_orig);
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GeometryDeformation get_evaluated_curves_deformation(const Depsgraph &depsgraph,
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const Object &ob_orig);
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GeometryDeformation get_evaluated_grease_pencil_drawing_deformation(const Object *ob_eval,
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const Object &ob_orig,
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int drawing_index);
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} // namespace blender::bke::crazyspace
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