1c0f374ec3
The `object_to_world` and `world_to_object` matrices are set during depsgraph evaluation, calculated from the object's animated location, rotation, scale, parenting, and constraints. It's confusing and unnecessary to store them with the original data in DNA. This commit moves them to `ObjectRuntime` and moves the matrices to use the C++ `float4x4` type, giving the potential for simplified code using the C++ abstractions. The matrices are accessible with functions on `Object` directly since they are used so commonly. Though for write access, directly using the runtime struct is necessary. The inverse `world_to_object` matrix is often calculated before it's used, even though it's calculated as part of depsgraph evaluation. Long term we might not want to store this in `ObjectRuntime` at all, and just calculate it on demand. Or at least we should remove the redundant calculations. That should be done separately though. Pull Request: https://projects.blender.org/blender/blender/pulls/118210
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Object;
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struct ProjCameraInfo;
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/**
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* Create UV info from the camera, needs to be freed.
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*
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* \param rotmat: can be `obedit->object_to_world().ptr()` when uv project is used.
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* \param winx, winy: can be from `scene->r.xsch / ysch`.
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*/
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struct ProjCameraInfo *BLI_uvproject_camera_info(struct Object *ob,
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const float rotmat[4][4],
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float winx,
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float winy);
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/**
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* Apply UV from #ProjCameraInfo (camera).
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*/
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void BLI_uvproject_from_camera(float target[2], float source[3], struct ProjCameraInfo *uci);
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/**
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* Apply uv from perspective matrix.
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* \param persmat: Can be `rv3d->persmat`.
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*/
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void BLI_uvproject_from_view(float target[2],
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float source[3],
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float persmat[4][4],
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float rotmat[4][4],
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float winx,
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float winy);
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/**
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* Apply orthographic UVs.
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*/
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void BLI_uvproject_from_view_ortho(float target[2], float source[3], const float rotmat[4][4]);
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/**
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* So we can adjust scale with keeping the struct private.
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*/
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void BLI_uvproject_camera_info_scale(struct ProjCameraInfo *uci, float scale_x, float scale_y);
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#ifdef __cplusplus
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}
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#endif
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