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-/* Starshatter: The Open Source Project
- Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
- Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
- Copyright (c) 1997-2006, Destroyer Studios LLC.
-
- AUTHOR: John DiCamillo
-
-
- OVERVIEW
- ========
- 3D Projection Camera class
-*/
-
-#ifndef Projector_h
-#define Projector_h
-
-#include "Geometry.h"
-#include "Window.h"
-#include "Camera.h"
-#include "Polygon.h"
-
-// +--------------------------------------------------------------------+
-
-class Projector
-{
-public:
- Projector(Window* win, Camera* cam);
- virtual ~Projector();
-
- // Operations:
- virtual void UseWindow(Window* win);
- virtual void UseCamera(Camera* cam);
- virtual void SetDepthScale(float scale);
- virtual double GetDepthScale() const;
- virtual void SetFieldOfView(double fov);
- virtual double GetFieldOfView() const;
- virtual int SetInfinite(int i);
- virtual void StartFrame();
-
- // accessor:
- Point Pos() const { return camera->Pos(); }
- Point vrt() { return camera->vrt(); }
- Point vup() { return camera->vup(); }
- Point vpn() { return camera->vpn(); }
- const Matrix& Orientation() const { return camera->Orientation(); }
-
- double XAngle() const { return xangle; }
- double YAngle() const { return yangle; }
-
- bool IsOrthogonal() const { return orthogonal; }
- void SetOrthogonal(bool o) { orthogonal = o; }
-
- // projection and clipping geometry:
- virtual void Transform(Vec3& vec) const;
- virtual void Transform(Point& point) const;
-
- virtual void Project(Vec3& vec, bool clamp=true) const;
- virtual void Project(Point& point, bool clamp=true) const;
- virtual void ProjectRect(Point& origin, double& w, double& h) const;
-
- virtual float ProjectRadius(const Vec3& vec, float radius) const;
-
- virtual void Unproject(Point& point) const;
- int IsVisible(const Vec3& v, float radius) const;
- int IsBoxVisible(const Point* p) const;
-
- float ApparentRadius(const Vec3& v, float radius) const;
-
- virtual void SetWorldSpace() { frustum_planes = world_planes; }
- virtual void SetViewSpace() { frustum_planes = view_planes; }
-
- Plane* GetCurrentClipPlanes() { return frustum_planes; }
-
- void SetUpFrustum();
- void ViewToWorld(Point& pin, Point& pout);
- void ViewToWorld(Vec3& vin, Vec3& vout);
- void SetWorldspaceClipPlane(Vec3& normal, Plane& plane);
-
-protected:
- Camera* camera;
-
- int width, height;
- double field_of_view;
- double xscreenscale, yscreenscale, maxscale;
- double xcenter, ycenter;
- double xangle, yangle;
-
- int infinite;
- float depth_scale;
- bool orthogonal;
-
- enum DISPLAY_CONST {
- NUM_FRUSTUM_PLANES= 4,
- };
-
- Plane* frustum_planes;
- Plane world_planes[NUM_FRUSTUM_PLANES];
- Plane view_planes[NUM_FRUSTUM_PLANES];
-
- float xclip0, xclip1;
- float yclip0, yclip1;
-};
-
-#endif // Projector_h
-