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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "BLI_array.hh"
#include "BLI_listbase.h"
#include "BLI_span.hh"
#include "DNA_curve_types.h"
#include "BKE_curve.h"
#include "BKE_spline.hh"
using blender::float3;
using blender::float4x4;
using blender::Span;
CurveEval *CurveEval::copy()
{
CurveEval *new_curve = new CurveEval();
for (SplinePtr &spline : this->splines) {
new_curve->splines.append(spline->copy());
}
return new_curve;
}
void CurveEval::translate(const float3 &translation)
{
for (SplinePtr &spline : this->splines) {
spline->translate(translation);
spline->mark_cache_invalid();
}
}
void CurveEval::transform(const float4x4 &matrix)
{
for (SplinePtr &spline : this->splines) {
spline->transform(matrix);
}
}
void CurveEval::bounds_min_max(float3 &min, float3 &max, const bool use_evaluated) const
{
for (const SplinePtr &spline : this->splines) {
spline->bounds_min_max(min, max, use_evaluated);
}
}
static BezierSpline::HandleType handle_type_from_dna_bezt(const eBezTriple_Handle dna_handle_type)
{
switch (dna_handle_type) {
case HD_FREE:
return BezierSpline::HandleType::Free;
case HD_AUTO:
return BezierSpline::HandleType::Auto;
case HD_VECT:
return BezierSpline::HandleType::Vector;
case HD_ALIGN:
return BezierSpline::HandleType::Align;
case HD_AUTO_ANIM:
return BezierSpline::HandleType::Auto;
case HD_ALIGN_DOUBLESIDE:
return BezierSpline::HandleType::Align;
}
BLI_assert_unreachable();
return BezierSpline::HandleType::Auto;
}
static Spline::NormalCalculationMode normal_mode_from_dna_curve(const int twist_mode)
{
switch (twist_mode) {
case CU_TWIST_Z_UP:
return Spline::NormalCalculationMode::ZUp;
case CU_TWIST_MINIMUM:
return Spline::NormalCalculationMode::Minimum;
case CU_TWIST_TANGENT:
return Spline::NormalCalculationMode::Tangent;
}
BLI_assert_unreachable();
return Spline::NormalCalculationMode::Minimum;
}
static NURBSpline::KnotsMode knots_mode_from_dna_nurb(const short flag)
{
switch (flag & (CU_NURB_ENDPOINT | CU_NURB_BEZIER)) {
case CU_NURB_ENDPOINT:
return NURBSpline::KnotsMode::EndPoint;
case CU_NURB_BEZIER:
return NURBSpline::KnotsMode::Bezier;
default:
return NURBSpline::KnotsMode::Normal;
}
BLI_assert_unreachable();
return NURBSpline::KnotsMode::Normal;
}
std::unique_ptr<CurveEval> curve_eval_from_dna_curve(const Curve &dna_curve)
{
std::unique_ptr<CurveEval> curve = std::make_unique<CurveEval>();
const ListBase *nurbs = BKE_curve_nurbs_get(&const_cast<Curve &>(dna_curve));
curve->splines.reserve(BLI_listbase_count(nurbs));
/* TODO: Optimize by reserving the correct points size. */
LISTBASE_FOREACH (const Nurb *, nurb, nurbs) {
switch (nurb->type) {
case CU_BEZIER: {
std::unique_ptr<BezierSpline> spline = std::make_unique<BezierSpline>();
spline->set_resolution(nurb->resolu);
spline->set_cyclic(nurb->flagu & CU_NURB_CYCLIC);
for (const BezTriple &bezt : Span(nurb->bezt, nurb->pntsu)) {
spline->add_point(bezt.vec[1],
handle_type_from_dna_bezt((eBezTriple_Handle)bezt.h1),
bezt.vec[0],
handle_type_from_dna_bezt((eBezTriple_Handle)bezt.h2),
bezt.vec[2],
bezt.radius,
bezt.tilt);
}
curve->splines.append(std::move(spline));
break;
}
case CU_NURBS: {
std::unique_ptr<NURBSpline> spline = std::make_unique<NURBSpline>();
spline->set_resolution(nurb->resolu);
spline->set_cyclic(nurb->flagu & CU_NURB_CYCLIC);
spline->set_order(nurb->orderu);
spline->knots_mode = knots_mode_from_dna_nurb(nurb->flagu);
for (const BPoint &bp : Span(nurb->bp, nurb->pntsu)) {
spline->add_point(bp.vec, bp.radius, bp.tilt, bp.vec[3]);
}
curve->splines.append(std::move(spline));
break;
}
case CU_POLY: {
std::unique_ptr<PolySpline> spline = std::make_unique<PolySpline>();
spline->set_cyclic(nurb->flagu & CU_NURB_CYCLIC);
for (const BPoint &bp : Span(nurb->bp, nurb->pntsu)) {
spline->add_point(bp.vec, bp.radius, bp.tilt);
}
curve->splines.append(std::move(spline));
break;
}
default: {
BLI_assert_unreachable();
break;
}
}
}
/* Note: Normal mode is stored separately in each spline to facilitate combining splines
* from multiple curve objects, where the value may be different. */
const Spline::NormalCalculationMode normal_mode = normal_mode_from_dna_curve(
dna_curve.twist_mode);
for (SplinePtr &spline : curve->splines) {
spline->normal_mode = normal_mode;
}
return curve;
}
/** \} */
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