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Diffstat (limited to 'source/blender/blenkernel/intern/spline_poly.cc')
-rw-r--r-- | source/blender/blenkernel/intern/spline_poly.cc | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/spline_poly.cc b/source/blender/blenkernel/intern/spline_poly.cc new file mode 100644 index 00000000000..5c33b0052fc --- /dev/null +++ b/source/blender/blenkernel/intern/spline_poly.cc @@ -0,0 +1,117 @@ +/* + * 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; + +SplinePtr PolySpline::copy() const +{ + return std::make_unique<PolySpline>(*this); +} + +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::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. + */ +blender::fn::GVArrayPtr PolySpline::interpolate_to_evaluated_points( + const blender::fn::GVArray &source_data) const +{ + BLI_assert(source_data.size() == this->size()); + + return source_data.shallow_copy(); +} |