Improve physical geometry, fluid solvers, audio, and profiling

include/FluidSim/PhysicalGeometry.hpp

@@ -0,0 +1,42 @@
+#pragma once
+#include "FluidSim/AudioProcessing.hpp"
+#include <string>
+#include <vector>
+
+namespace fluidsim::port {
+struct EngineConfig;
+struct ExhaustConfig;
+struct JunctionConfig;
+struct TwoStrokeConfig;
+struct GeometryPath {
+    bool operator==(const GeometryPath&) const = default;
+    std::vector<Vec3> points;
+    float length() const;
+    Vec3 position(float distance) const;
+};
+struct GeometryBox {
+    bool operator==(const GeometryBox&) const = default;
+    Vec3 center{},size{};
+    float volume() const {return size.x*size.y*size.z;}
+    Vec3 minimum() const {return {center.x-size.x*.5f,center.y-size.y*.5f,center.z-size.z*.5f};}
+    Vec3 maximum() const {return {center.x+size.x*.5f,center.y+size.y*.5f,center.z+size.z*.5f};}
+};
+struct GeometryVolume {std::string id;GeometryBox box;bool operator==(const GeometryVolume&) const = default;};
+struct CylinderPlacement {Vec3 origin{};float tilt_degrees{};bool operator==(const CylinderPlacement&) const = default;};
+struct PhysicalGeometry {
+    bool operator==(const PhysicalGeometry&) const = default;
+    std::vector<GeometryPath> pipes;
+    std::vector<GeometryVolume> volumes;
+    std::vector<CylinderPlacement> cylinders;
+    const GeometryBox* volume(const std::string& id) const;
+    GeometryBox* volume(const std::string& id);
+    bool empty() const {return pipes.empty();}
+};
+float geometry_distance(Vec3 a,Vec3 b);
+Vec3 cylinder_point(const CylinderPlacement& cylinder,Vec3 local);
+PhysicalGeometry default_geometry(const EngineConfig&,const ExhaustConfig&,const JunctionConfig&);
+PhysicalGeometry default_geometry(const TwoStrokeConfig&);
+EngineConfig resolve_engine_geometry(EngineConfig,const ExhaustConfig&,const JunctionConfig&);
+TwoStrokeConfig resolve_two_stroke_geometry(TwoStrokeConfig);
+void validate_geometry(const PhysicalGeometry&,std::size_t pipes,std::size_t cylinders);
+}