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author | Aki <please@ignore.pl> | 2022-04-01 21:23:39 +0200 |
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committer | Aki <please@ignore.pl> | 2022-04-01 21:23:39 +0200 |
commit | 3c487c5cd69c53d6fea948643c0a76df03516605 (patch) | |
tree | 72730c7b8b26a5ef8fc9a987ec4c16129efd5aac /StarsEx/Projector.h | |
parent | 8f353abd0bfe18baddd8a8250ab7c4f2d1c83a6e (diff) | |
download | starshatter-3c487c5cd69c53d6fea948643c0a76df03516605.zip starshatter-3c487c5cd69c53d6fea948643c0a76df03516605.tar.gz starshatter-3c487c5cd69c53d6fea948643c0a76df03516605.tar.bz2 |
Moved Stars45 to StarsEx
Diffstat (limited to 'StarsEx/Projector.h')
-rw-r--r-- | StarsEx/Projector.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/StarsEx/Projector.h b/StarsEx/Projector.h new file mode 100644 index 0000000..20f0f7b --- /dev/null +++ b/StarsEx/Projector.h @@ -0,0 +1,105 @@ +/* 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 + |