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/** CSci-4611 Assignment 3: Earthquake
*/
#ifndef EARTH_H_
#define EARTH_H_
#include <mingfx.h>
using namespace mingfx;
/** This class can draw a textured earth as either a plane or a sphere or
somewhere inbetween in order to support morphing from one shape to another.
*/
class Earth {
public:
Earth();
virtual ~Earth();
/// Load texture and define geometry. Initializes the mesh to the planar
/// version of the earth. The searchPath is for finding the texture file.
void Init(const std::vector<std::string>& search_path);
/// Draw the Earth to screen using the current version of the mesh set with
/// the last call to UpdateMesh.
void Draw(const Matrix4& model_matrix, const Matrix4& view_matrix, const Matrix4& proj_matrix);
/// Given latitude and longitude, calculate 3D position for the flat earth
/// model that lies on a plane
Point3 LatLongToPlane(double latitude, double longitude) const;
/// Given latitude and longitude, calculate the 3D position for the spherical
/// earth model.
Point3 LatLongToSphere(double latitude, double longitude) const;
/// This can be a helpful debugging aid when creating your triangle mesh. It
/// draws the triangles and normals for the current earth mesh.
void DrawDebugInfo(const Matrix4& model_matrix, const Matrix4& view_matrix, const Matrix4& proj_matrix);
/// Drawing either plane or sphere
void set_globe_mode(bool mode);
protected:
const int nslices = 10;
const int nstacks = 10;
// Stores the earth texture map
Texture2D earth_tex_;
// Stores the earth geometry as a renderable mesh
Mesh earth_mesh_;
// Renders meshes with texture and some simple shading
DefaultShader shader_;
DefaultShader::MaterialProperties earth_material_;
// Used only for the DrawDebugInfo() routine
QuickShapes quick_shapes_;
//Helper values needed for making earth
std::vector<unsigned int> indices_;
std::vector<Point3> vertices_;
std::vector<Point3> sphVertices_;
std::vector<Vector3> normals_;
std::vector<Vector3> sphNormals_;
std::vector<Point2> tex_;
};
#endif
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