Differential D14365 Diff 59272 source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc

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source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc

/* SPDX-License-Identifier: GPL-2.0-or-later		/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2021 Blender Foundation. All rights reserved. */		* Copyright 2021 Blender Foundation. All rights reserved. */

/** \file		/** \file
* \ingroup draw		* \ingroup draw
*/		*/

		#include "BLI_math_vector_types.hh"

#include "MEM_guardedalloc.h"		#include "MEM_guardedalloc.h"

#include "BKE_mesh.h"		#include "BKE_mesh.h"

#include "extract_mesh.hh"		#include "extract_mesh.hh"

#include "draw_subdivision.h"		#include "draw_subdivision.h"

Show All 36 Lines	static void compute_area_ratio(const MeshRenderData *mr,
float *r_area_ratio,		float *r_area_ratio,
float &r_tot_area,		float &r_tot_area,
float &r_tot_uv_area)		float &r_tot_uv_area)
{		{
float tot_area = 0.0f, tot_uv_area = 0.0f;		float tot_area = 0.0f, tot_uv_area = 0.0f;

if (mr->extract_type == MR_EXTRACT_BMESH) {		if (mr->extract_type == MR_EXTRACT_BMESH) {
CustomData *cd_ldata = &mr->bm->ldata;		CustomData *cd_ldata = &mr->bm->ldata;
int uv_ofs = CustomData_get_offset(cd_ldata, CD_MLOOPUV);		int uv_ofs = CustomData_get_offset(cd_ldata, CD_PROP_FLOAT2);

BMFace *efa;		BMFace *efa;
BMIter f_iter;		BMIter f_iter;
int f;		int f;
BM_ITER_MESH_INDEX (efa, &f_iter, mr->bm, BM_FACES_OF_MESH, f) {		BM_ITER_MESH_INDEX (efa, &f_iter, mr->bm, BM_FACES_OF_MESH, f) {
float area = BM_face_calc_area(efa);		float area = BM_face_calc_area(efa);
float uvarea = BM_face_calc_area_uv(efa, uv_ofs);		float uvarea = BM_face_calc_area_uv(efa, uv_ofs);
tot_area += area;		tot_area += area;
tot_uv_area += uvarea;		tot_uv_area += uvarea;
r_area_ratio[f] = area_ratio_get(area, uvarea);		r_area_ratio[f] = area_ratio_get(area, uvarea);
}		}
}		}
else {		else {
BLI_assert(mr->extract_type == MR_EXTRACT_MESH);		BLI_assert(mr->extract_type == MR_EXTRACT_MESH);
const MLoopUV uv_data = (const MLoopUV )CustomData_get_layer(&mr->me->ldata, CD_MLOOPUV);		const float2 uv_data = (const float2 )CustomData_get_layer(&mr->me->ldata, CD_PROP_FLOAT2);
const MPoly *mp = mr->mpoly;		const MPoly *mp = mr->mpoly;
for (int mp_index = 0; mp_index < mr->poly_len; mp_index++, mp++) {		for (int mp_index = 0; mp_index < mr->poly_len; mp_index++, mp++) {
float area = BKE_mesh_calc_poly_area(		float area = BKE_mesh_calc_poly_area(
mp, &mr->mloop[mp->loopstart], reinterpret_cast<const float(*)[3]>(mr->vert_positions));		mp, &mr->mloop[mp->loopstart], reinterpret_cast<const float(*)[3]>(mr->vert_positions));
float uvarea = BKE_mesh_calc_poly_uv_area(mp, uv_data);		float uvarea = area_poly_v2(reinterpret_cast<const float(*)[2]>(&uv_data[mp->loopstart]),
		mp->totloop);
tot_area += area;		tot_area += area;
tot_uv_area += uvarea;		tot_uv_area += uvarea;
r_area_ratio[mp_index] = area_ratio_get(area, uvarea);		r_area_ratio[mp_index] = area_ratio_get(area, uvarea);
}		}
}		}

r_tot_area = tot_area;		r_tot_area = tot_area;
r_tot_uv_area = tot_uv_area;		r_tot_uv_area = tot_uv_area;
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