Pogolyn: pg_scr.h Source File

00001 /*
00002     Copyright (c) 2007-2009 Takashi Kitao
00003     All rights reserved.
00004 
00005     Redistribution and use in source and binary forms, with or without
00006     modification, are permitted provided that the following conditions
00007     are met:
00008 
00009     1. Redistributions of source code must retain the above copyright
00010     `  notice, this list of conditions and the following disclaimer.
00011 
00012     2. Redistributions in binary form must reproduce the above copyright
00013     `  notice, this list of conditions and the following disclaimer in the
00014     `  documentation and/or other materials provided with the distribution.
00015 
00016     3. The name of the author may not be used to endorse or promote products
00017     `  derived from this software without specific prior written permission.
00018 
00019     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00020     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00021     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00022     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00023     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00024     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00025     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00026     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00027     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00028     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029 */
00030 
00031 
00036 class PG_API pgScr
00037 {
00038     friend class pgDraw;
00039     friend class pgDrawMgr;
00040 
00041 public:
00042     pgDefineException(ExceptionInvalidArgument);
00043     pgDefineException(ExceptionInvalidCall);
00044 
00045     static const u32 DEFAULT_FOCUS_DIST = 1000;
00046     static const u32 DEFAULT_NEAR_CLIP_DIST = 10;
00047     static const u32 DEFAULT_FAR_CLIP_DIST = 100000;
00048     static const u32 GUEST_SCREEN_NUM = 4;
00049 
00050     pgScr* getPrevN() const;
00051     pgScr* getNextN() const;
00052 
00053     void moveFirst();
00054     void moveLast();
00055     void moveBefore(pgID id);
00056     void moveAfter(pgID id);
00057 
00058     pgDraw* getFirstDrawN();
00059     pgDraw* getLastDrawN();
00060 
00061     pgID getID() const;
00062 
00063     s16 getLeftInFramebuffer() const;
00064     s16 getTopInFramebuffer() const;
00065     s16 getWidthInFramebuffer() const;
00066     s16 getHeightInFramebuffer() const;
00067     void setAreaInFramebuffer(s16 left, s16 top, u16 width, u16 height);
00068 
00069     r32 getViewWidth() const;
00070     r32 getViewHeight() const;
00071     void setViewSize(r32 width, r32 height);
00072 
00073     bool isActive() const;
00074     void setActive(bool is_active);
00075 
00076     bool isClearColor() const;
00077     bool isClearDepth() const;
00078     void setClearMode(bool is_clear_color, bool is_clear_depth);
00079 
00080     pgCol getClearColor() const;
00081     void setClearColor(pgCol col);
00082 
00083     bool isPerspective() const;
00084     void setPerspective(bool is_perspective);
00085 
00086     r32 getFocusDist() const;
00087     void setFocusDist(r32 focus_dist);
00088 
00089     r32 getNearClipDist() const;
00090     r32 getFarClipDist() const;
00091     void setClipDist(r32 near, r32 far);
00092 
00093     pgMat& view();
00094 
00095     bool hasScreenTexture() const;
00096     pgID getScreenTextureID() const;
00097     void attachScreenTexture(pgTex::TexFormat format);
00098     void detachScreenTexture();
00099     void updateScreenTexture(bool is_frame_skip_reset);
00100 
00101     pgID getGuestScreenID(u8 index) const;
00102     void setGuestScreenID(u8 index, pgID scr_id);
00103 
00104     r32 screenXToFramebufferX(r32 x_in_screen) const;
00105     r32 screenYToFramebufferY(r32 y_in_screen) const;
00106     r32 framebufferXToScreenX(r32 x_in_framebuffer) const;
00107     r32 framebufferYToScreenY(r32 y_in_framebuffer) const;
00108 
00109     pgVec worldToScreen(const pgVec& pos_in_world);
00110     pgVec worldToFramebuffer(const pgVec& pos_in_world);
00111     pgVec screenToPlane(r32 x_in_screen, r32 y_in_screen, const pgMat& xy_plane) const;
00112     pgVec framebufferToPlane(r32 x_in_framebuffer, r32 y_in_framebuffer, const pgMat& xy_plane) const;
00113 
00114     bool isInScreen(const pgVec& pos_in_world);
00115     bool canBoundClip(const pgMat& world, const pgVec& bound_max, const pgVec& bound_min);
00116 
00117     pgVec calcVisibleVector(const pgVec& pos1, const pgVec& pos2);
00118 
00119 private:
00120     enum ScrFlag
00121     {
00122         FLAG_ACTIVE, //
00123         FLAG_CLEAR_COLOR, //
00124         FLAG_CLEAR_DEPTH, //
00125         FLAG_PERSPECTIVE, //
00126         FLAG_COPY_SCREEN
00127     };
00128 
00129     pgScr(pgID scr_id);
00130     ~pgScr();
00131     void operator=(const pgScr&);
00132 
00133     void calcProjection();
00134     void setupProjection();
00135     pgVec worldToClip_noCalcProjection(const pgVec& pos_in_world) const;
00136     bool canBoundClip_noCalcProjection(const pgMat& world, const pgVec& bound_max, const pgVec& bound_min) const;
00137     void copyScreenTexture();
00138 
00139     pgFlag<u8, ScrFlag> m_flag;
00140     pgID m_id;
00141     s16 m_left_in_framebuffer;
00142     s16 m_top_in_framebuffer;
00143     u16 m_width_in_framebuffer;
00144     u16 m_height_in_framebuffer;
00145     r32 m_view_width;
00146     r32 m_view_height;
00147     pgCol m_clear_col;
00148     r32 m_focus_dist;
00149     r32 m_near_clip_dist;
00150     r32 m_far_clip_dist;
00151     pgMat m_view;
00152     pgDraw m_root_draw;
00153     pgTex* m_scr_tex;
00154     pgID m_guest_id[GUEST_SCREEN_NUM];
00155     r32 m_view_to_clip[16];
00156     r32 m_world_to_view[16];
00157     r32 m_world_to_clip[16];
00158 };