added 3dengfx into the repo, probably not the correct version for this

[summerhack] / src / 3dengfx / src / gfx / base_cam.hpp

diff --git a/src/3dengfx/src/gfx/base_cam.hpp b/src/3dengfx/src/gfx/base_cam.hpp
new file mode 100644 (file)
index 0000000..254fccc
--- /dev/null
+++ b/src/3dengfx/src/gfx/base_cam.hpp
@@ -0,0 +1,87 @@
+/*
+This file is part of the graphics core library.
+
+Copyright (c) 2004, 2005 John Tsiombikas <nuclear@siggraph.org>
+
+the graphics core library is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+the graphics core library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the graphics core library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+#ifndef _BASE_CAM_HPP_
+#define _BASE_CAM_HPP_
+
+#include "3dgeom.hpp"
+#include "animation.hpp"
+#include "n3dmath2/n3dmath2.hpp"
+
+enum ClipPlane {CLIP_NEAR, CLIP_FAR};
+
+/* DON'T change the order of these enums!
+ * The frustum plane extraction algorithm depends on it.
+ */
+enum {FRUSTUM_LEFT, FRUSTUM_RIGHT, FRUSTUM_BOTTOM, FRUSTUM_TOP, FRUSTUM_NEAR, FRUSTUM_FAR};
+
+class FrustumPlane {
+public:
+       scalar_t a, b, c, d;    // the plane equation coefficients
+
+       FrustumPlane();
+       FrustumPlane(scalar_t a, scalar_t b, scalar_t c, scalar_t d);
+       FrustumPlane(const Matrix4x4 &mat, int plane);
+};
+       
+
+class BaseCamera : public XFormNode {
+protected:
+       scalar_t fov;
+       scalar_t near_clip, far_clip;
+       Vector3 up;
+       scalar_t aspect;
+
+       mutable FrustumPlane frustum[6];
+
+       struct {bool x, y, z;} flip_view;
+
+       virtual void setup_frustum(const Matrix4x4 &m);
+       
+public:
+       BaseCamera(const Vector3 &trans = Vector3(0,0,0), const Quaternion &rot = Quaternion());
+       virtual ~BaseCamera();
+       
+       virtual void set_up_vector(const Vector3 &up);
+       
+       virtual void set_fov(scalar_t angle);
+       virtual scalar_t get_fov() const;
+
+       virtual void set_aspect(scalar_t aspect);
+       virtual scalar_t get_aspect() const;
+       
+       virtual void set_clipping_planes(scalar_t near_clip, scalar_t far_clip);
+       virtual void set_clipping_plane(scalar_t val, ClipPlane which);
+       virtual scalar_t get_clipping_plane(ClipPlane which) const;
+
+       virtual void zoom(scalar_t zoom_factor, unsigned long msec = XFORM_LOCAL_PRS);
+       virtual void pan(const Vector2 &dir, unsigned long msec = XFORM_LOCAL_PRS);
+       virtual void roll(scalar_t angle, unsigned long msec = XFORM_LOCAL_PRS);
+
+       virtual void flip(bool x, bool y, bool z);
+
+       virtual const FrustumPlane *get_frustum() const;
+
+       virtual Matrix4x4 get_camera_matrix(unsigned long msec = XFORM_LOCAL_PRS) const = 0;
+       virtual Matrix4x4 get_projection_matrix() const;
+
+       virtual void activate(unsigned long msec = XFORM_LOCAL_PRS) const;
+};
+
+#endif // _BASE_CAM_HPP_