46e049d0ce
This patch implements the vector types (i.e:`float2`) by making heavy usage of templating. All vector functions are now outside of the vector classes (inside the `blender::math` namespace) and are not vector size dependent for the most part. In the ongoing effort to make shaders less GL centric, we are aiming to share more code between GLSL and C++ to avoid code duplication. ####Motivations: - We are aiming to share UBO and SSBO structures between GLSL and C++. This means we will use many of the existing vector types and others we currently don't have (uintX, intX). All these variations were asking for many more code duplication. - Deduplicate existing code which is duplicated for each vector size. - We also want to share small functions. Which means that vector functions should be static and not in the class namespace. - Reduce friction to use these types in new projects due to their incompleteness. - The current state of the `BLI_(float|double|mpq)(2|3|4).hh` is a bit of a let down. Most clases are incomplete, out of sync with each others with different codestyles, and some functions that should be static are not (i.e: `float3::reflect()`). ####Upsides: - Still support `.x, .y, .z, .w` for readability. - Compact, readable and easilly extendable. - All of the vector functions are available for all the vectors types and can be restricted to certain types. Also template specialization let us define exception for special class (like mpq). - With optimization ON, the compiler unroll the loops and performance is the same. ####Downsides: - Might impact debugability. Though I would arge that the bugs are rarelly caused by the vector class itself (since the operations are quite trivial) but by the type conversions. - Might impact compile time. I did not saw a significant impact since the usage is not really widespread. - Functions needs to be rewritten to support arbitrary vector length. For instance, one can't call `len_squared_v3v3` in `math::length_squared()` and call it a day. - Type cast does not work with the template version of the `math::` vector functions. Meaning you need to manually cast `float *` and `(float *)[3]` to `float3` for the function calls. i.e: `math::distance_squared(float3(nearest.co), positions[i]);` - Some parts might loose in readability: `float3::dot(v1.normalized(), v2.normalized())` becoming `math::dot(math::normalize(v1), math::normalize(v2))` But I propose, when appropriate, to use `using namespace blender::math;` on function local or file scope to increase readability. `dot(normalize(v1), normalize(v2))` ####Consideration: - Include back `.length()` method. It is quite handy and is more C++ oriented. - I considered the GLM library as a candidate for replacement. It felt like too much for what we need and would be difficult to extend / modify to our needs. - I used Macros to reduce code in operators declaration and potential copy paste bugs. This could reduce debugability and could be reverted. - This touches `delaunay_2d.cc` and the intersection code. I would like to know @howardt opinion on the matter. - The `noexcept` on the copy constructor of `mpq(2|3)` is being removed. But according to @JacquesLucke it is not a real problem for now. I would like to give a huge thanks to @JacquesLucke who helped during this and pushed me to reduce the duplication further. Reviewed By: brecht, sergey, JacquesLucke Differential Revision: https://developer.blender.org/D13791
134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2008 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup editors
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*/
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#pragma once
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#include "BLI_compiler_attrs.h"
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#include "WM_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct GPUBatch;
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struct Main;
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struct bContext;
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/* ed_util.c */
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void ED_editors_init_for_undo(struct Main *bmain);
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void ED_editors_init(struct bContext *C);
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/**
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* Frees all edit-mode stuff.
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*/
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void ED_editors_exit(struct Main *bmain, bool do_undo_system);
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bool ED_editors_flush_edits_for_object_ex(struct Main *bmain,
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struct Object *ob,
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bool for_render,
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bool check_needs_flush);
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bool ED_editors_flush_edits_for_object(struct Main *bmain, struct Object *ob);
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/**
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* Flush any temp data from object editing to DNA before writing files, rendering, copying, etc.
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*/
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bool ED_editors_flush_edits_ex(struct Main *bmain, bool for_render, bool check_needs_flush);
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bool ED_editors_flush_edits(struct Main *bmain);
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/**
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* Use to free ID references within runtime data (stored outside of DNA)
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*
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* \param new_id: may be NULL to unlink \a old_id.
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*/
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void ED_spacedata_id_remap(struct ScrArea *area,
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struct SpaceLink *sl,
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struct ID *old_id,
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struct ID *new_id);
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void ED_operatortypes_edutils(void);
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/* Drawing */
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/**
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* Callback that draws a line between the mouse and a position given as the initial argument.
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*/
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void ED_region_draw_mouse_line_cb(const struct bContext *C,
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struct ARegion *region,
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void *arg_info);
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/**
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* \note Keep in sync with #BKE_image_stamp_buf.
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*/
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void ED_region_image_metadata_draw(
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int x, int y, struct ImBuf *ibuf, const rctf *frame, float zoomx, float zoomy);
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/* Slider */
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struct tSlider;
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struct tSlider *ED_slider_create(struct bContext *C);
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/**
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* For modal operations so the percentage doesn't pop on the first mouse movement.
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*/
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void ED_slider_init(struct tSlider *slider, const struct wmEvent *event);
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/**
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* Calculate slider factor based on mouse position.
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*/
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bool ED_slider_modal(struct tSlider *slider, const struct wmEvent *event);
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void ED_slider_destroy(struct bContext *C, struct tSlider *slider);
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/**
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* Return string based on the current state of the slider.
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*/
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void ED_slider_status_string_get(const struct tSlider *slider,
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char *status_string,
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const size_t size_of_status_string);
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float ED_slider_factor_get(struct tSlider *slider);
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void ED_slider_factor_set(struct tSlider *slider, float factor);
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bool ED_slider_allow_overshoot_get(struct tSlider *slider);
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void ED_slider_allow_overshoot_set(struct tSlider *slider, bool value);
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/* ************** XXX OLD CRUFT WARNING ************* */
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/**
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* Now only used in 2D spaces, like time, f-curve, NLA, image, etc.
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*
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* \note Shift/Control are not configurable key-bindings.
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*/
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void apply_keyb_grid(
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int shift, int ctrl, float *val, float fac1, float fac2, float fac3, int invert);
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/* where else to go ? */
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void unpack_menu(struct bContext *C,
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const char *opname,
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const char *id_name,
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const char *abs_name,
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const char *folder,
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struct PackedFile *pf);
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#ifdef __cplusplus
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}
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#endif
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