70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
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#ifndef slic3r_CameraUtils_hpp_
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#define slic3r_CameraUtils_hpp_
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#include "Camera.hpp"
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#include "libslic3r/Point.hpp"
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namespace Slic3r {
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class GLVolume;
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}
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namespace Slic3r::GUI {
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/// <summary>
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/// Help divide camera data and camera functions
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/// This utility work with camera data by static funtions
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/// </summary>
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class CameraUtils
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{
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public:
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CameraUtils() = delete; // only static functions
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/// <summary>
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/// Project point throw camera to 2d coordinate into imgui window
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/// </summary>
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/// <param name="camera">Projection params</param>
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/// <param name="points">Point to project.</param>
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/// <returns>projected points by camera into coordinate of camera.
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/// x(from left to right), y(from top to bottom)</returns>
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static Points project(const Camera& camera, const std::vector<Vec3d> &points);
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static Point project(const Camera& camera, const Vec3d &point);
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/// <summary>
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/// Create hull around GLVolume in 2d space of camera
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/// </summary>
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/// <param name="camera">Projection params</param>
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/// <param name="volume">Outline by 3d object</param>
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/// <returns>Polygon around object</returns>
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static Polygon create_hull2d(const Camera &camera, const GLVolume &volume);
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/// <summary>
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/// Create ray(point and direction) for screen coordinate
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/// </summary>
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/// <param name="camera">Definition of camera</param>
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/// <param name="position">Position on screen(aka mouse position) </param>
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/// <param name="point">OUT start of ray</param>
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/// <param name="direction">OUT direction of ray</param>
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static void ray_from_screen_pos(const Camera &camera, const Vec2d &position, Vec3d &point, Vec3d &direction);
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static void ray_from_ortho_screen_pos(const Camera &camera, const Vec2d &position, Vec3d &point, Vec3d &direction);
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static void ray_from_persp_screen_pos(const Camera &camera, const Vec2d &position, Vec3d &point, Vec3d &direction);
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/// <summary>
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/// Unproject mouse coordinate to get position in space where z coor is zero
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/// Platter surface should be in z == 0
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/// </summary>
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/// <param name="camera">Projection params</param>
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/// <param name="coor">Mouse position</param>
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/// <returns>Position on platter under mouse</returns>
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static Vec2d get_z0_position(const Camera &camera, const Vec2d &coor);
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/// <summary>
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/// Create 3d screen point from 2d position
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/// </summary>
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/// <param name="camera">Define camera viewport</param>
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/// <param name="position">Position on screen(aka mouse position)</param>
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/// <returns>Point represented screen coor in 3d</returns>
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static Vec3d screen_point(const Camera &camera, const Vec2d &position);
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};
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} // Slic3r::GUI
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#endif /* slic3r_CameraUtils_hpp_ */
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