Primitive.hpp

#pragma once
 
#include "TransformHelper.hpp"
 
#include <Threedim/TinyObj.hpp>
#include <halp/audio.hpp>
#include <halp/geometry.hpp>
#include <halp/meta.hpp>
 
namespace Threedim
{
struct Primitive
{
  halp_meta(category, "Visuals/Meshes/Primitives")
  halp_meta(author, "Jean-Michaël Celerier, vcglib")
  halp_meta(manual_url, "https://ossia.io/score-docs/processes/meshes.html#primitive")
 
  // Derived classes' operator() calls this with their own inputs +
  // geometry output to propagate the position/rotation/scale controls
  // into the transform[16] slot + dirty_transform flag. Only sets
  // dirty_transform when the matrix actually changes vs last frame.
  template <typename In, typename Out>
  void apply_transform(const In& in, Out& out)
  {
    out.dirty_transform = computeTRSMatrix(in, out.transform, m_cachedTRS);
  }
 
  void operator()() { }
  PrimitiveOutputs outputs;
  std::vector<float> complete;
  CachedTRS m_cachedTRS{};
};
 
// Plane is a special case due to needing a different geometry type
// to disable back-face culling
struct Plane
{
public:
  halp_meta(category, "Visuals/Meshes/Primitives")
  halp_meta(author, "Jean-Michaël Celerier, vcglib")
  halp_meta(manual_url, "https://ossia.io/score-docs/processes/meshes.html#primitive")
  halp_meta(name, "Plane")
  halp_meta(c_name, "3d_plane")
  halp_meta(description, "Generate a subdivided plane mesh with position, rotation and scale controls.")
  halp_meta(uuid, "1e923d52-3494-49e8-8698-b001405000da")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
    struct : halp::spinbox_i32<"H divs.", halp::range{2, 200, 16}>, Update {} hdivs;
    struct : halp::spinbox_i32<"V divs.", halp::range{2, 200, 16}>, Update {} vdivs;
  } inputs;
 
  struct
  {
    struct
    {
      halp_meta(name, "Geometry");
      halp::position_normals_texcoords_geometry_plane mesh;
      float transform[16]{};
      bool dirty_mesh = false;
      bool dirty_transform = false;
    } geometry;
  } outputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()()
  {
    outputs.geometry.dirty_transform
        = computeTRSMatrix(inputs, outputs.geometry.transform, m_cachedTRS);
  }
 
  std::vector<float> complete;
  CachedTRS m_cachedTRS{};
};
 
struct Cube : Primitive
{
public:
  halp_meta(name, "Cube")
  halp_meta(c_name, "3d_cube")
  halp_meta(description, "Generate a cube mesh with position, rotation and scale controls.")
  halp_meta(uuid, "cf8a328a-1ba6-47f8-929f-2168bdec90b0")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
struct Sphere : Primitive
{
public:
  halp_meta(name, "Sphere")
  halp_meta(c_name, "3d_sphere")
  halp_meta(description, "Generate a sphere mesh with position, rotation and scale controls.")
  halp_meta(uuid, "fc0df335-d0e9-4ebf-b438-6ba334741c1a")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
    struct
        : halp::hslider_i32<"Subdivisions", halp::range{1, 5, 2}>
        , Update
    {
    } subdiv;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
struct Icosahedron : Primitive
{
  halp_meta(name, "Icosahedron")
  halp_meta(c_name, "3d_ico")
  halp_meta(description, "Generate an icosahedron mesh with position, rotation and scale controls.")
  halp_meta(uuid, "3ea9f69f-1a0e-49c2-ad16-a88e9ca628a7")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
struct Cone : Primitive
{
  halp_meta(name, "Cone")
  halp_meta(c_name, "3d_cone")
  halp_meta(description, "Generate a cone mesh with position, rotation and scale controls.")
  halp_meta(uuid, "8a5718c4-07f0-476b-b720-1c99e5a379a5")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
    struct
        : halp::hslider_i32<"Subdivisions", halp::range{1, 500, 36}>
        , Update
    {
    } subdiv;
    struct
        : halp::hslider_f32<"R1", halp::range{0, 1000, 1}>
        , Update
    {
    } r1;
    struct
        : halp::hslider_f32<"R2", halp::range{0, 1000, 10}>
        , Update
    {
    } r2;
    struct
        : halp::hslider_f32<"Height", halp::range{0, 1000, 5}>
        , Update
    {
    } h;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
struct Cylinder : Primitive
{
  halp_meta(name, "Cylinder")
  halp_meta(c_name, "3d_cylinder")
  halp_meta(description, "Generate a cylinder mesh with position, rotation and scale controls.")
  halp_meta(uuid, "5992830e-80fe-4461-b357-2c9b5c5e48ae")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
    struct
        : halp::hslider_i32<"Slices", halp::range{1, 64, 16}>
        , Update
    {
    } slices;
    struct
        : halp::hslider_i32<"Stacks", halp::range{1, 64, 16}>
        , Update
    {
    } stacks;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
struct Torus : Primitive
{
  halp_meta(name, "Torus")
  halp_meta(c_name, "3d_torus")
  halp_meta(description, "Generate a torus mesh with position, rotation and scale controls.")
  halp_meta(uuid, "85c5983c-3f4f-4bfe-b8cf-fccdf6ec5faf")
 
  struct
  {
    PositionControl position;
    RotationControl rotation;
    ScaleControl scale;
    struct
        : halp::hslider_f32<"R1", halp::range{0, 100, 10}>
        , Update
    {
    } r1;
    struct
        : halp::hslider_f32<"R2", halp::range{0, 100, 1}>
        , Update
    {
    } r2;
    struct
        : halp::hslider_i32<"H Divisions", halp::range{1, 50, 24}>
        , Update
    {
    } hdiv;
    struct
        : halp::hslider_i32<"V Divisions", halp::range{1, 50, 12}>
        , Update
    {
    } vdiv;
  } inputs;
 
  void prepare(halp::setup) { update(); }
  void update();
  void operator()() { apply_transform(inputs, outputs.geometry); }
};
 
}