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-rw-r--r--src/plot.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/src/plot.h b/src/plot.h
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+
+
+/** Clears plotting area to a flat colour (if needed)
+ */
+typedef bool (nsfb_plotfn_clg_t)(nsfb_t *nsfb, nsfb_colour_t c);
+
+/** Plots a rectangle outline. The line can be solid, dotted or
+ * dashed. Top left corner at (x0,y0) and rectangle has given
+ * width and height.
+ */
+typedef bool (nsfb_plotfn_rectangle_t)(nsfb_t *nsfb, nsfb_bbox_t *rect, int line_width, nsfb_colour_t c, bool dotted, bool dashed);
+
+/** Plots a line using a given pen.
+ */
+typedef bool (nsfb_plotfn_line_t)(nsfb_t *nsfb, int linec, nsfb_bbox_t *line, nsfb_plot_pen_t *pen);
+
+/** Plots a filled polygon with straight lines between points.
+ * The lines around the edge of the ploygon are not plotted. The
+ * polygon is filled with the non-zero winding rule.
+ */
+typedef bool (nsfb_plotfn_polygon_t)(nsfb_t *nsfb, const int *p, unsigned int n, nsfb_colour_t fill);
+
+/** Plots a filled rectangle. Top left corner at (x0,y0), bottom
+ * right corner at (x1,y1). Note: (x0,y0) is inside filled area,
+ * but (x1,y1) is below and to the right. See diagram below.
+ */
+typedef bool (nsfb_plotfn_fill_t)(nsfb_t *nsfb, nsfb_bbox_t *rect, nsfb_colour_t c);
+
+/** Clipping operations.
+ */
+typedef bool (nsfb_plotfn_clip_t)(nsfb_t *nsfb, nsfb_bbox_t *clip);
+
+/** Plots an arc, around (x,y), from anticlockwise from angle1 to
+ * angle2. Angles are measured anticlockwise from horizontal, in
+ * degrees.
+ */
+typedef bool (nsfb_plotfn_arc_t)(nsfb_t *nsfb, int x, int y, int radius, int angle1, int angle2, nsfb_colour_t c);
+
+/** Plots a point.
+ *
+ * Plot a single alpha blended pixel.
+ */
+typedef bool (nsfb_plotfn_point_t)(nsfb_t *nsfb, int x, int y, nsfb_colour_t c);
+
+/** Plot an ellipse.
+ *
+ * plot an ellipse outline, note if teh bounding box is square this will plot a
+ * circle.
+ */
+typedef bool (nsfb_plotfn_ellipse_t)(nsfb_t *nsfb, nsfb_bbox_t *ellipse, nsfb_colour_t c);
+
+/** Plot a filled ellipse.
+ *
+ * plot a filled ellipse, note if the bounding box is square this will plot a
+ * circle.
+ */
+typedef bool (nsfb_plotfn_ellipse_fill_t)(nsfb_t *nsfb, nsfb_bbox_t *ellipse, nsfb_colour_t c);
+
+
+/** Plot bitmap
+ */
+typedef bool (nsfb_plotfn_bitmap_t)(nsfb_t *nsfb, const nsfb_bbox_t *loc, const nsfb_colour_t *pixel, int bmp_width, int bmp_height, int bmp_stride, bool alpha);
+
+/** Plot tiled bitmap
+ */
+typedef bool (nsfb_plotfn_bitmap_tiles_t)(nsfb_t *nsfb, const nsfb_bbox_t *loc, int tiles_x, int tiles_y, const nsfb_colour_t *pixel, int bmp_width, int bmp_height, int bmp_stride, bool alpha);
+
+
+/** Copy an area of screen
+ *
+ * Copy an area of the display.
+ */
+typedef bool (nsfb_plotfn_copy_t)(nsfb_t *nsfb, nsfb_bbox_t *srcbox, nsfb_bbox_t *dstbox);
+
+
+/** Plot an 8 bit per pixel glyph.
+ */
+typedef bool (nsfb_plotfn_glyph8_t)(nsfb_t *nsfb, nsfb_bbox_t *loc, const uint8_t *pixel, int pitch, nsfb_colour_t c);
+
+
+/** Plot an 1 bit per pixel glyph.
+ */
+typedef bool (nsfb_plotfn_glyph1_t)(nsfb_t *nsfb, nsfb_bbox_t *loc, const uint8_t *pixel, int pitch, nsfb_colour_t c);
+
+/** Read rectangle of screen into buffer
+ */
+typedef bool (nsfb_plotfn_readrect_t)(nsfb_t *nsfb, nsfb_bbox_t *rect, nsfb_colour_t *buffer);
+
+/** Plot quadratic bezier spline
+ */
+typedef bool (nsfb_plotfn_quadratic_bezier_t)(nsfb_t *nsfb, nsfb_bbox_t *curve, nsfb_point_t *ctrla, nsfb_plot_pen_t *pen);
+
+/** Plot cubic bezier spline
+ */
+typedef bool (nsfb_plotfn_cubic_bezier_t)(nsfb_t *nsfb, nsfb_bbox_t *curve, nsfb_point_t *ctrla, nsfb_point_t *ctrlb, nsfb_plot_pen_t *pen);
+
+typedef bool (nsfb_plotfn_polylines_t)(nsfb_t *nsfb, int pointc, const nsfb_point_t *points, nsfb_plot_pen_t *pen);
+
+/** plot path */
+typedef bool (nsfb_plotfn_path_t)(nsfb_t *nsfb, int pathc, nsfb_plot_pathop_t *pathop, nsfb_plot_pen_t *pen);
+
+/** plotter function table. */
+typedef struct nsfb_plotter_fns_s {
+ nsfb_plotfn_clg_t *clg;
+ nsfb_plotfn_rectangle_t *rectangle;
+ nsfb_plotfn_line_t *line;
+ nsfb_plotfn_polygon_t *polygon;
+ nsfb_plotfn_fill_t *fill;
+ nsfb_plotfn_clip_t *get_clip;
+ nsfb_plotfn_clip_t *set_clip;
+ nsfb_plotfn_ellipse_t *ellipse;
+ nsfb_plotfn_ellipse_fill_t *ellipse_fill;
+ nsfb_plotfn_arc_t *arc;
+ nsfb_plotfn_bitmap_t *bitmap;
+ nsfb_plotfn_bitmap_tiles_t *bitmap_tiles;
+ nsfb_plotfn_point_t *point;
+ nsfb_plotfn_copy_t *copy;
+ nsfb_plotfn_glyph8_t *glyph8;
+ nsfb_plotfn_glyph1_t *glyph1;
+ nsfb_plotfn_readrect_t *readrect;
+ nsfb_plotfn_quadratic_bezier_t *quadratic;
+ nsfb_plotfn_cubic_bezier_t *cubic;
+ nsfb_plotfn_path_t *path;
+ nsfb_plotfn_polylines_t *polylines;
+} nsfb_plotter_fns_t;
+
+
+bool select_plotters(nsfb_t *nsfb);
+