diff options
author | Jacques Lucke <jacques@blender.org> | 2020-07-19 14:58:49 +0300 |
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committer | Jacques Lucke <jacques@blender.org> | 2020-07-19 14:58:58 +0300 |
commit | 5063820c9b7fdc499c0aa16ca850541101ffda09 (patch) | |
tree | 45541e8148069cabdadfd9ac4dc00558498e73c0 /source/blender/simulation/intern/particle_function.hh | |
parent | 8c90910dcc3ac56ecaa3f0d0ed1a43a423ff687f (diff) |
Particles: Emit particles over time
This adds a basic internal emitter for every particle simulation.
The emitter cannot be controlled by the user yet. That will
come next.
Diffstat (limited to 'source/blender/simulation/intern/particle_function.hh')
-rw-r--r-- | source/blender/simulation/intern/particle_function.hh | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/source/blender/simulation/intern/particle_function.hh b/source/blender/simulation/intern/particle_function.hh new file mode 100644 index 00000000000..abed9063bae --- /dev/null +++ b/source/blender/simulation/intern/particle_function.hh @@ -0,0 +1,90 @@ +/* + * 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. + */ + +#ifndef __SIM_PARTICLE_FUNCTION_HH__ +#define __SIM_PARTICLE_FUNCTION_HH__ + +#include "FN_attributes_ref.hh" +#include "FN_multi_function.hh" + +#include "BLI_resource_collector.hh" + +#include "simulation_solver.hh" + +namespace blender::sim { + +class ParticleFunctionInput { + public: + virtual ~ParticleFunctionInput() = default; + virtual void add_input(fn::AttributesRef attributes, + fn::MFParamsBuilder ¶ms, + ResourceCollector &resources) const = 0; +}; + +class ParticleFunction { + private: + const fn::MultiFunction *global_fn_; + const fn::MultiFunction *per_particle_fn_; + Array<const ParticleFunctionInput *> global_inputs_; + Array<const ParticleFunctionInput *> per_particle_inputs_; + Array<bool> output_is_global_; + Vector<uint> global_output_indices_; + Vector<uint> per_particle_output_indices_; + Vector<fn::MFDataType> output_types_; + Vector<StringRefNull> output_names_; + + friend class ParticleFunctionEvaluator; + + public: + ParticleFunction(const fn::MultiFunction *global_fn, + const fn::MultiFunction *per_particle_fn, + Span<const ParticleFunctionInput *> global_inputs, + Span<const ParticleFunctionInput *> per_particle_inputs, + Span<bool> output_is_global); +}; + +class ParticleFunctionEvaluator { + private: + ResourceCollector resources_; + const ParticleFunction &particle_fn_; + const ParticleChunkContext &particle_chunk_context_; + IndexMask mask_; + fn::MFContextBuilder global_context_; + fn::MFContextBuilder per_particle_context_; + Vector<void *> outputs_; + bool is_computed_ = false; + + public: + ParticleFunctionEvaluator(const ParticleFunction &particle_fn, + const ParticleChunkContext &particle_chunk_context); + ~ParticleFunctionEvaluator(); + + void compute(); + fn::GVSpan get(uint output_index, StringRef expected_name) const; + + template<typename T> fn::VSpan<T> get(uint output_index, StringRef expected_name) const + { + return this->get(output_index, expected_name).typed<T>(); + } + + private: + void compute_globals(); + void compute_per_particle(); +}; + +} // namespace blender::sim + +#endif /* __SIM_PARTICLE_FUNCTION_HH__ */ |