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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 "BKE_curve.h"
#include "BKE_spline.hh"
using blender::Array;
using blender::float3;
using blender::float4x4;
using blender::IndexRange;
using blender::MutableSpan;
using blender::Span;
using blender::Vector;
SplinePtr PolySpline::copy() const
{
SplinePtr new_spline = std::make_unique<PolySpline>(*this);
return new_spline;
}
int PolySpline::size() const
{
const int size = this->positions_.size();
BLI_assert(this->radii_.size() == size);
BLI_assert(this->tilts_.size() == size);
return size;
}
int PolySpline::resolution() const
{
return 1;
}
void PolySpline::set_resolution(const int UNUSED(value))
{
/* Poly curve has no resolution, there is just one evaluated point per control point. */
}
void PolySpline::add_point(const float3 position, const float radius, const float tilt)
{
this->positions_.append(position);
this->radii_.append(radius);
this->tilts_.append(tilt);
}
void PolySpline::drop_front(const int count)
{
BLI_assert(this->size() - count > 0);
this->positions_.remove(0, count);
this->radii_.remove(0, count);
this->tilts_.remove(0, count);
this->mark_cache_invalid();
}
void PolySpline::drop_back(const int count)
{
const int new_size = this->size() - count;
BLI_assert(new_size > 0);
this->positions_.resize(new_size);
this->radii_.resize(new_size);
this->tilts_.resize(new_size);
this->mark_cache_invalid();
}
MutableSpan<float3> PolySpline::positions()
{
return this->positions_;
}
Span<float3> PolySpline::positions() const
{
return this->positions_;
}
MutableSpan<float> PolySpline::radii()
{
return this->radii_;
}
Span<float> PolySpline::radii() const
{
return this->radii_;
}
MutableSpan<float> PolySpline::tilts()
{
return this->tilts_;
}
Span<float> PolySpline::tilts() const
{
return this->tilts_;
}
int PolySpline::evaluated_points_size() const
{
return this->size();
}
void PolySpline::correct_end_tangents() const
{
}
/* TODO: Consider refactoring to avoid copying and "mapping" for poly splines. */
void PolySpline::ensure_base_cache() const
{
if (!this->base_cache_dirty_) {
return;
}
std::lock_guard lock{this->base_cache_mutex_};
if (!this->base_cache_dirty_) {
return;
}
const int total = this->evaluated_points_size();
this->evaluated_positions_cache_.resize(total);
this->evaluated_mapping_cache_.resize(total);
MutableSpan<float3> positions = this->evaluated_positions_cache_.as_mutable_span();
MutableSpan<PointMapping> mappings = this->evaluated_mapping_cache_.as_mutable_span();
for (const int i : positions.index_range()) {
positions[i] = this->positions_[i];
mappings[i].control_point_index = i;
mappings[i].factor = 0.0f;
}
this->base_cache_dirty_ = false;
}
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