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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_span.hh"
#include "BLI_virtual_array.hh"
#include "BKE_spline.hh"
using blender::float3;
using blender::MutableSpan;
using blender::Span;
using blender::fn::GVArray;
using blender::fn::GVArrayPtr;
void PolySpline::copy_settings(Spline &UNUSED(dst)) const
{
/* Poly splines have no settings not covered by the base class. */
}
void PolySpline::copy_data(Spline &dst) const
{
PolySpline &poly = static_cast<PolySpline &>(dst);
poly.positions_ = positions_;
poly.radii_ = radii_;
poly.tilts_ = tilts_;
}
int PolySpline::size() const
{
const int size = positions_.size();
BLI_assert(size == radii_.size());
BLI_assert(size == tilts_.size());
return size;
}
/**
* \warning Call #reallocate on the spline's attributes after adding all points.
*/
void PolySpline::add_point(const float3 position, const float radius, const float tilt)
{
positions_.append(position);
radii_.append(radius);
tilts_.append(tilt);
this->mark_cache_invalid();
}
void PolySpline::resize(const int size)
{
positions_.resize(size);
radii_.resize(size);
tilts_.resize(size);
this->mark_cache_invalid();
attributes.reallocate(size);
}
MutableSpan<float3> PolySpline::positions()
{
return positions_;
}
Span<float3> PolySpline::positions() const
{
return positions_;
}
MutableSpan<float> PolySpline::radii()
{
return radii_;
}
Span<float> PolySpline::radii() const
{
return radii_;
}
MutableSpan<float> PolySpline::tilts()
{
return tilts_;
}
Span<float> PolySpline::tilts() const
{
return tilts_;
}
void PolySpline::reverse_impl()
{
}
void PolySpline::mark_cache_invalid()
{
tangent_cache_dirty_ = true;
normal_cache_dirty_ = true;
length_cache_dirty_ = true;
}
int PolySpline::evaluated_points_size() const
{
return this->size();
}
void PolySpline::correct_end_tangents() const
{
}
Span<float3> PolySpline::evaluated_positions() const
{
return this->positions();
}
/**
* Poly spline interpolation from control points to evaluated points is a special case, since
* the result data is the same as the input data. This function returns a GVArray that points to
* the original data. Therefore the lifetime of the returned virtual array must not be longer than
* the source data.
*/
GVArrayPtr PolySpline::interpolate_to_evaluated(const GVArray &src) const
{
BLI_assert(src.size() == this->size());
return src.shallow_copy();
}
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