114 lines
5.5 KiB
C
114 lines
5.5 KiB
C
/* Grafx2 - The Ultimate 256-color bitmap paint program
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Copyright 2007-2008 Adrien Destugues
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Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
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Grafx2 is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2
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of the License.
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Grafx2 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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//////////////////////////////////////////////////////////////////////////////
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///@file graph.h
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/// Graphic functions that target the screen and/or image.
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//////////////////////////////////////////////////////////////////////////////
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void Shade_list_to_lookup_tables(word * list, short step, byte mode, byte * table_inc,
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byte * table_dec
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);
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void Transform_point(short x, short y,
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float cos_a, float sin_a, short * rx, short * ry);
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int Init_mode_video(int width, int height, int fullscreen,int pixel_ratio);
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byte No_effect(word x,word y,byte color);
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byte Effect_shade(word x,word y,byte color);
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byte Effect_quick_shade(word x,word y,byte color);
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byte Effect_tiling(word x,word y,byte color);
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byte Effect_smooth(word x,word y,byte color);
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void Display_foreback(void);
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void Display_pixel(word x,word y,byte color);
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void Display_paintbrush(short x,short y,byte color,byte is_preview);
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void Hide_paintbrush(short x,short y);
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void Resize_image(word chosen_width,word chosen_height);
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void Fill_general(byte fill_color);
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void Replace(byte New_color);
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void Pixel_figure_preview (word x_pos,word y_pos,byte color);
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void Pixel_figure_preview_auto(word x_pos,word y_pos);
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void Pixel_figure_preview_xor(word x_pos,word y_pos,byte color);
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void Pixel_figure_preview_xorback(word x_pos,word y_pos,byte color);
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void Pixel_figure_in_brush(word x_pos,word y_pos,byte color);
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void Draw_empty_circle_permanent(short center_x,short center_y,short radius,byte color);
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void Draw_empty_circle_preview (short center_x,short center_y,short radius,byte color);
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void Hide_empty_circle_preview (short center_x,short center_y,short radius);
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void Draw_filled_circle (short center_x,short center_y,short radius,byte color);
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void Draw_empty_ellipse_permanent(short center_x,short center_y,short horizontal_radius,short vertical_radius,byte color);
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void Draw_empty_ellipse_preview (short center_x,short center_y,short horizontal_radius,short vertical_radius,byte color);
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void Hide_empty_ellipse_preview (short center_x,short center_y,short horizontal_radius,short vertical_radius);
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void Draw_filled_ellipse (short center_x,short center_y,short horizontal_radius,short vertical_radius,byte color);
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void Clamp_coordinates_regular_angle(short ax, short ay, short* bx, short* by);
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void Draw_line_general(short start_x,short start_y,short end_x,short end_y, byte color);
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void Draw_line_permanent (short start_x,short start_y,short end_x,short end_y,byte color);
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void Draw_line_preview (short start_x,short start_y,short end_x,short end_y,byte color);
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void Draw_line_preview_xor(short start_x,short start_y,short end_x,short end_y,byte color);
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void Draw_line_preview_xorback(short start_x,short start_y,short end_x,short end_y,byte color);
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void Hide_line_preview (short start_x,short start_y,short end_x,short end_y);
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void Draw_empty_rectangle(short start_x,short start_y,short end_x,short end_y,byte color);
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void Draw_filled_rectangle(short start_x,short start_y,short end_x,short end_y,byte color);
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void Draw_curve_permanent(short x1, short y1, short x2, short y2, short x3, short y3, short x4, short y4, byte color);
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void Draw_curve_preview (short x1, short y1, short x2, short y2, short x3, short y3, short x4, short y4, byte color);
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void Hide_curve_preview (short x1, short y1, short x2, short y2, short x3, short y3, short x4, short y4, byte color);
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void Airbrush(short clicked_button);
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void Gradient_basic (long index,short x_pos,short y_pos);
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void Gradient_dithered (long index,short x_pos,short y_pos);
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void Gradient_extra_dithered(long index,short x_pos,short y_pos);
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void Degrade_aleatoire (long index,short x_pos,short y_pos);
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void Draw_grad_circle (short center_x,short center_y,short radius,short spot_x,short spot_y);
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void Draw_grad_ellipse(short center_x,short center_y,short horizontal_radius,short vertical_radius,short spot_x,short spot_y);
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void Draw_grad_rectangle(short rax,short ray,short rbx,short rby,short vax,short vay, short vbx, short vby);
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void Polyfill_general(int vertices, short * points, int color);
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void Polyfill(int vertices, short * points, int color);
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/// Remap the spare page according to the main page's palette
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void Remap_spare(void);
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///
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/// All the figure-drawing functions work by calling this function for each
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/// pixel to draw. Before calling these functions, you should assign
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/// ::Pixel_figure depending on what you where you want to draw:
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/// - ::Pixel_figure_preview : On screen.
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/// - ::Pixel_figure_preview_xor : On screen, XORing the color.
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/// - ::Pixel_figure_permanent : On screen and in the image.
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/// - ::Pixel_figure_clear_preview : On screen, reverting to the image's pixels.
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extern Func_pixel Pixel_figure;
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void Update_part_of_screen(short x, short y, short width, short height);
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void Redraw_grid(short x, short y, unsigned short w, unsigned short h);
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