// Berkeley Open Infrastructure for Network Computing // http://boinc.berkeley.edu // Copyright (C) 2005 University of California // // This is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; // either version 2.1 of the License, or (at your option) any later version. // // This software 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 Lesser General Public License for more details. // // To view the GNU Lesser General Public License visit // http://www.gnu.org/copyleft/lesser.html // or write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // various utility classes for OpenGL programming, // used in Astropulse and SETI@home // See also graphics_data.C,h #ifndef GUTIL_H #define GUTIL_H #include struct COLOR { float r; float g; float b; float a; COLOR(float rr=0,float gg=0, float bb=0, float aa=0) : r(rr),g(gg),b(bb),a(aa) {}; }; extern void HLStoRGB( double H, double L, double S, COLOR& c); extern void scale_screen(int w,int h); extern void center_screen(int w,int h); extern void drawSphere(float* pos, float rad); extern void drawCylinder(bool vertical, float* pos, float len, float rad); #define TEXT_LEFT 0 #define TEXT_CENTER 1 #define TEXT_RIGHT 2 extern void draw_text_line( float* pos, float height, float width, const char *text, int justify=TEXT_LEFT ); void draw_text_simple(const char* text,float line_width,float char_height); extern void draw_text( float* pos, float height, float width, float spacing, const char *text ); extern void draw_text_new( float* pos, float height, float width, float spacing, const char *text ); extern void draw_text_right( float* pos, float height, float width, float spacing, const char *text ); extern void draw_text_new_3d( float* pos, float height, float width, float spacing, const char *text ); extern void draw_rotated_text( float* pos, float height, float width, float spacing, const char *text, float rotation, float* rotation_vector ); extern float text_width(const char* text); extern float text_width_new(const char* text); extern void draw_text_panel( float* _pos, float* size, float margin, COLOR color, float char_height, float line_width, float line_spacing, const char* text ); extern void mode_texture(); extern void mode_ortho(); extern void mode_shaded(float*); extern void mode_unshaded(); extern void mode_lines(); extern void ortho_done(); extern bool get_matrix(double src[16]); extern bool get_projection(double src[16]); extern bool get_viewport(int view[4]); extern void get_2d_positions(double p1, double p2, double p3, double model[16], double proj[16], int viewport[4], double proj_pos[3] ); // a progress bar represented as an opaque cylinder within a translucent cylinder // class PROGRESS { float color[4], inner_color[4]; float len, rad, inner_rad; public: float pos[3]; void init(float* pos, float len, float diam, float inner, float* c, float* ic); void draw(float); PROGRESS() : len(0), rad(0), inner_rad(0) { memset(color,0,sizeof(color)); memset(inner_color,0,sizeof(inner_color)); memset(pos,0,sizeof(pos)); }; }; //2d progress bar class PROGRESS_2D { float color[4], inner_color[4]; float len, width, inner_width; float pos[3]; public: void set_pos(float*); void init(float* pos, float len, float width, float inner_width, float* c, float* ic); void draw(float); PROGRESS_2D() : len(0), width(0), inner_width(0) { memset(color,0,sizeof(color)); memset(inner_color,0,sizeof(inner_color)); memset(pos,0,sizeof(pos)); }; }; // a graph of a function of 1 variable drawn as a ribbon in 3D // class RIBBON_GRAPH { float size[3]; float color[4], tick_color[4]; float *data, dmax; float tick_yfrac; float ticks[3]; int len; void draw_x(int); void draw_y(int); void draw_tick(int i); float pos[3]; public: void set_pos(float*); void init(float* pos, float* size, float* color, float* tick_color, float tick_yfrac=0.2); void draw(float* data, int len, bool with_ticks=false); void add_tick(float x, int index); }; #define PANEL_MAX_LINES 10 // a colored panel with some text, that can move cyclically // class MOVING_TEXT_PANEL { float base_pos[3]; float theta; float dtheta; COLOR color; float char_height; float line_width; float line_spacing; float size[3]; double margin; char text[PANEL_MAX_LINES][256]; public: MOVING_TEXT_PANEL(); float pos[3]; void init(float* pos, float* size, COLOR& color, double dtheta, double ch, double lw, double ls, double margin); void draw(); void set_text(int lineno, const char* t); void get_pos(int lineno, float* pos); static void sort(MOVING_TEXT_PANEL* tp, int n); void move(double dt); }; // ----- STARFIELDS // // stars have their own coord system // x = -1..1 // y = -1..1 // z = 0..zmax // the projection plane is z=1, // and the square +- 1/zmax is mapped to the window // struct STAR { double x, y, z; }; class STARFIELD { double zmax, zmaxinv; double speed; int nstars; void replace_star(int); STAR* stars; public: STARFIELD(); void build_stars(int, float); void update_stars(float); }; // ----- TEXTURES AND IMAGES #define ALIGN_BOTTOM 0 #define ALIGN_CENTER 1 #define ALIGN_TOP 2 unsigned int* read_rgb_texture (const char *, int*, int* ,int *); struct TEXTURE_DESC { bool present; unsigned int id; double xsize; // size of underlying image double ysize; TEXTURE_DESC() : present(false),id(0),xsize(0),ysize(0) {}; void draw(float* pos, float* size, int xalign, int yalign); int load_image_file(const char* filename); int CreateTextureJPG(const char* strFileName); int CreateTextureBMP(const char* strFileName); int CreateTexturePPM(const char* strFileName); int CreateTextureTGA(const char* strFileName); int CreateTextureRGB(const char* strFileName); }; // ----- FONTS // extern unsigned int listBase; extern unsigned int MyCreateFont(const char *fontName, int Size,int weight); extern void print_text(const char* string); #endif