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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Img3D/Model/Geometry.h
//! @brief Defines class Geometry.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#ifndef BORNAGAIN_IMG3D_MODEL_GEOMETRY_H
#define BORNAGAIN_IMG3D_MODEL_GEOMETRY_H
#include "Base/Type/Field2D.h"
#include "Img3D/Model/Geometry_inc.h"
#include <QVector>
namespace Img3D {
class Geometry {
public:
// vertex + normal pair
struct VertexAndNormal {
F3 v, n;
VertexAndNormal() = default;
VertexAndNormal(const F3& v_, const F3& n_)
: v(v_)
, n(n_)
{
}
};
// vertex indices (for GL)
using Indices = std::vector<unsigned>;
// vertices (for GL)
struct Vertices : private QVector<F3> {
using QVector<F3>::append;
using QVector<F3>::QVector;
using QVector<F3>::reserve;
using QVector<F3>::resize;
using QVector<F3>::operator[];
using QVector<F3>::at;
using QVector<F3>::begin;
using QVector<F3>::count;
using QVector<F3>::end;
void addVertex(const F3&, int n = 1); // add a vertex, possibly multiple copies
void addTriangle(const F3&, const F3&, const F3&); // triangle
void addQuad(const F3&, const F3&, const F3&,
const F3&); // quad as 2 triangles
void addQuad(const Vertices&, unsigned, unsigned, unsigned, unsigned); // quad by indices
void addFan(const Vertices&, const Indices&); // triangle fan
};
// vertex/normal mesh
using Mesh = QVector<VertexAndNormal>;
Geometry(GeometricID::Key);
Geometry(GeometricID::Key, const double2d_t* top, const double2d_t* bottom, bool drawBottom);
virtual ~Geometry();
const Mesh& mesh() const { return m_mesh; }
private:
GeometricID::Key m_key;
Mesh m_mesh;
// make a mesh from vectors of vertices and (optionally) normals
static Mesh makeMesh(const Vertices& vs, Vertices const* ns = nullptr);
static Mesh makeMesh(const Vertices& vs, const Vertices& ns);
static Mesh meshPlane();
static Mesh meshBox();
static Mesh meshRoughBox(const double2d_t* topRough, const double2d_t* bottomRough,
bool drawBottom);
static Mesh meshSphere(float cut, float baseShift = 0.0f, float cutFromTop = 0.0f);
static Mesh meshColumn(float ratio_Rt_Rb, float numSides);
static Mesh meshIcosahedron();
static Mesh meshDodecahedron();
static Mesh meshTruncBox(float tD);
static Mesh meshBipyramid4(float rH, float alpha, float H);
static Mesh meshRipple(float numSides, float ratio_asymmetry_W);
// mesh params for round shapes
static int const RINGS = 12, SLICES = 24;
};
} // namespace Img3D
#endif // BORNAGAIN_IMG3D_MODEL_GEOMETRY_H
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