90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SIM_PARTICLE_FUNCTION_HH__
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#define __SIM_PARTICLE_FUNCTION_HH__
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#include "FN_attributes_ref.hh"
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#include "FN_multi_function.hh"
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#include "BLI_resource_collector.hh"
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namespace blender::sim {
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class ParticleFunctionInput {
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public:
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virtual ~ParticleFunctionInput() = default;
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virtual void add_input(fn::AttributesRef attributes,
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fn::MFParamsBuilder ¶ms,
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ResourceCollector &resources) const = 0;
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};
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class ParticleFunction {
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private:
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const fn::MultiFunction *global_fn_;
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const fn::MultiFunction *per_particle_fn_;
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Array<const ParticleFunctionInput *> global_inputs_;
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Array<const ParticleFunctionInput *> per_particle_inputs_;
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Array<bool> output_is_global_;
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Vector<uint> global_output_indices_;
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Vector<uint> per_particle_output_indices_;
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Vector<fn::MFDataType> output_types_;
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Vector<StringRefNull> output_names_;
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friend class ParticleFunctionEvaluator;
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public:
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ParticleFunction(const fn::MultiFunction *global_fn,
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const fn::MultiFunction *per_particle_fn,
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Span<const ParticleFunctionInput *> global_inputs,
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Span<const ParticleFunctionInput *> per_particle_inputs,
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Span<bool> output_is_global);
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};
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class ParticleFunctionEvaluator {
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private:
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ResourceCollector resources_;
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const ParticleFunction &particle_fn_;
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IndexMask mask_;
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fn::MFContextBuilder global_context_;
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fn::MFContextBuilder per_particle_context_;
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fn::AttributesRef particle_attributes_;
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Vector<void *> outputs_;
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bool is_computed_ = false;
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public:
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ParticleFunctionEvaluator(const ParticleFunction &particle_fn,
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IndexMask mask,
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fn::AttributesRef particle_attributes);
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~ParticleFunctionEvaluator();
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void compute();
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fn::GVSpan get(uint output_index, StringRef expected_name) const;
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template<typename T> fn::VSpan<T> get(uint output_index, StringRef expected_name) const
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{
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return this->get(output_index, expected_name).typed<T>();
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}
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private:
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void compute_globals();
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void compute_per_particle();
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};
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} // namespace blender::sim
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#endif /* __SIM_PARTICLE_FUNCTION_HH__ */
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