#include "amiga/os3support.h"
#include <proto/exec.h>
#include <proto/intuition.h>
#include <proto/layers.h>
#include <proto/graphics.h>
#include <intuition/intuition.h>
#include <graphics/rpattr.h>
#include <graphics/gfxmacros.h>
#include <graphics/gfxbase.h>
#include <math.h>
#include <assert.h>
#include <stdlib.h>
#include "utils/nsoption.h"
#include "utils/utils.h"
#include "utils/log.h"
#include "netsurf/css.h"
#include "netsurf/mouse.h"
#include "netsurf/window.h"
#include "amiga/plotters.h"
#include "amiga/bitmap.h"
#include "amiga/font.h"
#include "amiga/gui.h"
#include "amiga/memory.h"
#include "amiga/misc.h"
#include "amiga/rtg.h"
#include "amiga/utf8.h"

Include dependency graph for plotters.c:

Data Structures
struct	bfbitmap

struct	ami_plot_pen

struct	bez_point

struct	gui_globals

Macros
#define	M_PI 3.14159265358979323846

#define	PATT_DOT 0xAAAA

#define	PATT_DASH 0xCCCC

#define	PATT_LINE 0xFFFF

#define	AREA_SIZE 25000

Functions
	HOOKF (void, ami_bitmap_tile_hook, struct RastPort , rp, struct BackFillMessage )

struct gui_globals *	ami_plot_ra_alloc (ULONG width, ULONG height, bool force32bit, bool alloc_pen_list)
	Alloc a plotter render area. More...

void	ami_plot_ra_free (struct gui_globals *gg)
	Free a plotter render area. More...

struct RastPort *	ami_plot_ra_get_rastport (struct gui_globals *gg)
	Get RastPort associated with a render area. More...

struct BitMap *	ami_plot_ra_get_bitmap (struct gui_globals *gg)
	Get a drawing BitMap associated with a render area. More...

void	ami_plot_ra_get_size (struct gui_globals gg, int width, int *height)
	Get size of BitMap associated with a render area. More...

void	ami_plot_ra_set_pen_list (struct gui_globals gg, struct MinList pen_list)
	Set a list of shared pens for a render area to use Only relevant for palette-mapped screens. More...

void	ami_clearclipreg (struct gui_globals *gg)

static ULONG	ami_plot_obtain_pen (struct MinList *shared_pens, ULONG colr)

void	ami_plot_release_pens (struct MinList *shared_pens)

static void	ami_plot_setapen (struct gui_globals glob, struct RastPort rp, ULONG colr)

static void	ami_plot_setopen (struct gui_globals glob, struct RastPort rp, ULONG colr)

void	ami_plot_clear_bbox (struct RastPort rp, struct IBox bbox)

static void	ami_arc_gfxlib (struct RastPort *rp, int x, int y, int radius, int angle1, int angle2)

static nserror	ami_bitmap (struct gui_globals glob, int x, int y, int width, int height, struct bitmap bitmap)

static void	ami_bezier (struct bez_point restrict a, struct bez_point restrict b, struct bez_point restrict c, struct bez_point restrict d, float t, struct bez_point *restrict p)

bool	ami_plot_screen_is_palettemapped (void)

static nserror	ami_clip (const struct redraw_context ctx, const struct rect clip)
	Sets a clip rectangle for subsequent plot operations. More...

static nserror	ami_arc (const struct redraw_context ctx, const plot_style_t style, int x, int y, int radius, int angle1, int angle2)
	Plots an arc. More...

static nserror	ami_disc (const struct redraw_context ctx, const plot_style_t style, int x, int y, int radius)
	Plots a circle. More...

static nserror	ami_line (const struct redraw_context ctx, const plot_style_t style, const struct rect *line)
	Plots a line. More...

static nserror	ami_rectangle (const struct redraw_context ctx, const plot_style_t style, const struct rect *rect)
	Plots a rectangle. More...

static nserror	ami_polygon (const struct redraw_context ctx, const plot_style_t style, const int *p, unsigned int n)
	Plot a polygon. More...

static nserror	ami_path (const struct redraw_context ctx, const plot_style_t pstyle, const float *p, unsigned int n, const float transform[6])
	Plots a path. More...

static nserror	ami_bitmap_tile (const struct redraw_context ctx, struct bitmap bitmap, int x, int y, int width, int height, colour bg, bitmap_flags_t flags)
	Plot a bitmap. More...

static nserror	ami_text (const struct redraw_context ctx, const struct plot_font_style fstyle, int x, int y, const char *text, size_t length)
	Text plotting. More...

Variables
static int	init_layers_count = 0

static APTR	pool_pens = NULL

static bool	palette_mapped = true

const struct plotter_table	amiplot

Macro Definition Documentation

◆ AREA_SIZE

#define AREA_SIZE 25000

Definition at line 111 of file plotters.c.

◆ M_PI

#define M_PI 3.14159265358979323846

Definition at line 101 of file plotters.c.

◆ PATT_DASH

#define PATT_DASH 0xCCCC

Definition at line 105 of file plotters.c.

◆ PATT_DOT

#define PATT_DOT 0xAAAA

Definition at line 104 of file plotters.c.

◆ PATT_LINE

#define PATT_LINE 0xFFFF

Definition at line 106 of file plotters.c.

Function Documentation

◆ ami_arc()

static nserror ami_arc	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		int	x,
		int	y,
		int	radius,
		int	angle1,
		int	angle2
	)

static

Plots an arc.

plot an arc segment around (x,y), anticlockwise from angle1 to angle2. Angles are measured anticlockwise from horizontal, in degrees.

Parameters

ctx	The current redraw context.
style	Style controlling the arc plot.
x	The x coordinate of the arc.
y	The y coordinate of the arc.
radius	The radius of the arc.
angle1	The start angle of the arc.
angle2	The finish angle of the arc.

Returns: NSERROR_OK on success else error code.

Definition at line 671 of file plotters.c.

References ami_arc_gfxlib(), ami_plot_setapen(), plot_style_s::fill_colour, NSERROR_OK, NSLOG, redraw_context::priv, and gui_globals::rp.

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◆ ami_arc_gfxlib()

static void ami_arc_gfxlib	(	struct RastPort *	rp,
		int	x,
		int	y,
		int	radius,
		int	angle1,
		int	angle2
	)

static

Definition at line 421 of file plotters.c.

References M_PI.

Referenced by ami_arc().

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◆ ami_bezier()

static void ami_bezier	(	struct bez_point *restrict	a,
		struct bez_point *restrict	b,
		struct bez_point *restrict	c,
		struct bez_point *restrict	d,
		float	t,
		struct bez_point *restrict	p
	)

static

Definition at line 602 of file plotters.c.

Referenced by ami_path().

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◆ ami_bitmap()

static nserror ami_bitmap	(	struct gui_globals *	glob,
		int	x,
		int	y,
		int	width,
		int	height,
		struct bitmap *	bitmap
	)

static

Definition at line 449 of file plotters.c.

References ami_bitmap_get_mask(), ami_bitmap_get_native(), ami_bitmap_is_nativebm(), ami_gui_get_screen(), ami_rtg_freebitmap(), amiga_bitmap_get_opaque(), BLITA_MaskPlane, BLITA_UseSrcAlpha, height, MINTERM_SRCMASK, NSERROR_OK, NSLOG, gui_globals::palette_mapped, gui_globals::rect, gui_globals::rp, scrn, and width.

Referenced by ami_bitmap_tile().

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◆ ami_bitmap_tile()

static nserror ami_bitmap_tile	(	const struct redraw_context *	ctx,
		struct bitmap *	bitmap,
		int	x,
		int	y,
		int	width,
		int	height,
		colour	bg,
		bitmap_flags_t	flags
	)

static

Plot a bitmap.

Tiled plot of a bitmap image. (x,y) gives the top left coordinate of an explicitly placed tile. From this tile the image can repeat in all four directions – up, down, left and right – to the extents given by the current clip rectangle.

The bitmap_flags say whether to tile in the x and y directions. If not tiling in x or y directions, the single image is plotted. The width and height give the dimensions the image is to be scaled to.

Parameters

ctx	The current redraw context.
bitmap	The bitmap to plot
x	The x coordinate to plot the bitmap
y	The y coordiante to plot the bitmap
width	The width of area to plot the bitmap into
height	The height of area to plot the bitmap into
bg	the background colour to alpha blend into
flags	the flags controlling the type of plot operation

Returns: NSERROR_OK on success else error code.

Todo:: is this logic logical?

Definition at line 1034 of file plotters.c.

References ami_bitmap(), ami_bitmap_get_mask(), ami_bitmap_get_native(), ami_bitmap_is_nativebm(), ami_rtg_freebitmap(), amiga_bitmap_get_opaque(), bitmap_get_height(), bitmap_get_width(), BITMAPF_REPEAT_X, BITMAPF_REPEAT_Y, bfbitmap::bm, bfbitmap::height, height, bfbitmap::mask, NSERROR_OK, NSLOG, bfbitmap::offsetx, bfbitmap::offsety, bfbitmap::palette_mapped, gui_globals::palette_mapped, redraw_context::priv, gui_globals::rect, gui_globals::rp, bfbitmap::width, and width.

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◆ ami_clearclipreg()

void ami_clearclipreg ( struct gui_globals * gg )

Definition at line 311 of file plotters.c.

References ami_gui_get_screen(), gui_globals::apen, gui_globals::apen_num, gui_globals::open, gui_globals::open_num, gui_globals::rect, gui_globals::rp, and scrn.

Referenced by ami_cw_redraw_rect(), ami_do_redraw_tiled(), bitmap_render(), and gui_window_new_content().

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◆ ami_clip()

static nserror ami_clip	(	const struct redraw_context *	ctx,
		const struct rect *	clip
	)

static

Sets a clip rectangle for subsequent plot operations.

Parameters

ctx	The current redraw context.
clip	The rectangle to limit all subsequent plot operations within.

Returns: NSERROR_OK on success else error code.

Definition at line 626 of file plotters.c.

References clip(), NSERROR_OK, NSLOG, redraw_context::priv, gui_globals::rect, and gui_globals::rp.

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◆ ami_disc()

static nserror ami_disc	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		int	x,
		int	y,
		int	radius
	)

static

Plots a circle.

Plot a circle centered on (x,y), which is optionally filled.

Parameters

ctx	The current redraw context.
style	Style controlling the circle plot.
x	x coordinate of circle centre.
y	y coordinate of circle centre.
radius	circle radius.

Returns: NSERROR_OK on success else error code.

Definition at line 703 of file plotters.c.

References ami_plot_setapen(), plot_style_s::fill_colour, plot_style_s::fill_type, NSERROR_OK, NSLOG, PLOT_OP_TYPE_NONE, redraw_context::priv, gui_globals::rp, plot_style_s::stroke_colour, and plot_style_s::stroke_type.

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◆ ami_line()

static nserror ami_line	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const struct rect *	line
	)

static

Plots a line.

plot a line from (x0,y0) to (x1,y1). Coordinates are at centre of line width/thickness.

Parameters

ctx	The current redraw context.
style	Style controlling the line plot.
line	A rectangle defining the line to be drawn

Returns: NSERROR_OK on success else error code.

< Solid colour

< Doted plot

< dashed plot

Definition at line 738 of file plotters.c.

References ami_plot_setapen(), line(), NSERROR_OK, NSLOG, PATT_DASH, PATT_DOT, PATT_LINE, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, PLOT_OP_TYPE_SOLID, plot_style_fixed_to_int, redraw_context::priv, gui_globals::rp, plot_style_s::stroke_colour, plot_style_s::stroke_type, and plot_style_s::stroke_width.

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◆ ami_path()

static nserror ami_path	(	const struct redraw_context *	ctx,
		const plot_style_t *	pstyle,
		const float *	p,
		unsigned int	n,
		const float	transform[6]
	)

static

Plots a path.

Path plot consisting of cubic Bezier curves. Line and fill colour is controlled by the plot style.

Parameters

ctx	The current redraw context.
pstyle	Style controlling the path plot.
p	elements of path
n	nunber of elements on path
transform	A transform to apply to the path.

Returns: NSERROR_OK on success else error code.

Definition at line 896 of file plotters.c.

References ami_bezier(), ami_plot_setapen(), ami_plot_setopen(), plot_style_s::fill_colour, NS_TRANSPARENT, NSERROR_INVALID, NSERROR_OK, NSLOG, PLOTTER_PATH_BEZIER, PLOTTER_PATH_CLOSE, PLOTTER_PATH_LINE, PLOTTER_PATH_MOVE, redraw_context::priv, gui_globals::rp, plot_style_s::stroke_colour, bez_point::x, and bez_point::y.

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◆ ami_plot_clear_bbox()

void ami_plot_clear_bbox	(	struct RastPort *	rp,
		struct IBox *	bbox
	)

Definition at line 412 of file plotters.c.

Referenced by ami_switch_tab().

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◆ ami_plot_obtain_pen()

static ULONG ami_plot_obtain_pen	(	struct MinList *	shared_pens,
		ULONG	colr
	)

static

Definition at line 330 of file plotters.c.

References ami_gui_get_screen(), ami_memory_itempool_alloc, ami_plot_pen::node, NSLOG, ami_plot_pen::pen, pool_pens, and scrn.

Referenced by ami_plot_setapen(), and ami_plot_setopen().

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◆ ami_plot_ra_alloc()

struct gui_globals * ami_plot_ra_alloc	(	ULONG	width,
		ULONG	height,
		bool	force32bit,
		bool	alloc_pen_list
	)

Alloc a plotter render area.

Parameters

width	of render bitmap
height	of render bitmap
force32bit	allocate a 32-bit bitmap even if this does not match the screen
alloc_pen_list	set to false to use own pen list (eg. if multiple pen lists will be required)

Returns: pointer to render area

Definition at line 113 of file plotters.c.

References ami_AllocMinList(), ami_gui_get_screen(), ami_memory_chip_alloc, ami_memory_itempool_create, ami_rtg_allocbitmap(), amiga_warn_user(), gui_globals::apen, gui_globals::apen_num, AREA_SIZE, gui_globals::areabuf, BGBACKFILL, BITMAP_LAYOUT_ARGB8888, bitmap_set_format(), gui_globals::bm, gui_globals::height, height, init_layers_count, gui_globals::layerinfo, gui_globals::managed_pen_list, NSLOG, nsoption_bool, nsoption_int, nsoption_set_bool, gui_globals::open, gui_globals::open_num, gui_globals::palette_mapped, palette_mapped, pool_pens, gui_globals::rp, scrn, gui_globals::shared_pens, gui_globals::tmprasbuf, gui_globals::width, and width.

Referenced by ami_corewindow_init(), ami_openscreenfirst(), ami_print_begin(), and bitmap_render().

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◆ ami_plot_ra_free()

void ami_plot_ra_free ( struct gui_globals * gg )

Free a plotter render area.

Parameters

gg	render area to free

Definition at line 258 of file plotters.c.

References ami_memory_chip_free, ami_memory_itempool_delete, ami_plot_release_pens(), ami_rtg_freebitmap(), gui_globals::areabuf, gui_globals::bm, init_layers_count, gui_globals::layerinfo, gui_globals::managed_pen_list, pool_pens, gui_globals::rp, gui_globals::shared_pens, and gui_globals::tmprasbuf.

Referenced by ami_corewindow_fini(), ami_print_end(), bitmap_render(), and gui_quit().

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◆ ami_plot_ra_get_bitmap()

struct BitMap * ami_plot_ra_get_bitmap ( struct gui_globals * gg )

Get a drawing BitMap associated with a render area.

Parameters

gg	render area

Returns: pointer to render area BitMap

Definition at line 295 of file plotters.c.

References gui_globals::bm.

Referenced by ami_cw_redraw_rect(), ami_do_redraw_tiled(), and bitmap_render().

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◆ ami_plot_ra_get_rastport()

struct RastPort * ami_plot_ra_get_rastport ( struct gui_globals * gg )

Get RastPort associated with a render area.

Parameters

gg	render area

Returns: pointer to render area BitMap

Definition at line 290 of file plotters.c.

References gui_globals::rp.

Referenced by ami_print_dump().

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◆ ami_plot_ra_get_size()

void ami_plot_ra_get_size	(	struct gui_globals *	gg,
		int *	width,
		int *	height
	)

Get size of BitMap associated with a render area.

Parameters

gg	render area
width	updated to BitMap width
height	updated to BitMap height

Definition at line 300 of file plotters.c.

References gui_globals::height, height, gui_globals::width, and width.

Referenced by ami_cw_redraw_rect(), and ami_do_redraw_tiled().

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◆ ami_plot_ra_set_pen_list()

void ami_plot_ra_set_pen_list	(	struct gui_globals *	gg,
		struct MinList *	pen_list
	)

Set a list of shared pens for a render area to use Only relevant for palette-mapped screens.

Parameters

gg	render area
pen_list	allocated by ami_AllocMinList()

Definition at line 306 of file plotters.c.

References gui_globals::shared_pens.

Referenced by ami_do_redraw_tiled().

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◆ ami_plot_release_pens()

void ami_plot_release_pens ( struct MinList * shared_pens )

Definition at line 356 of file plotters.c.

References ami_gui_get_screen(), ami_memory_itempool_free, GetHead(), GetSucc(), IsMinListEmpty, ami_plot_pen::node, pool_pens, and scrn.

Referenced by ami_plot_ra_free(), ami_switch_tab(), gui_window_destroy(), and gui_window_new_content().

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◆ ami_plot_screen_is_palettemapped()

bool ami_plot_screen_is_palettemapped ( void )

Definition at line 610 of file plotters.c.

References palette_mapped.

Referenced by ami_gui_opts_open(), ami_theme_throbber_setup(), gui_search_web_provider_update(), and gui_window_set_icon().

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◆ ami_plot_setapen()

static void ami_plot_setapen	(	struct gui_globals *	glob,
		struct RastPort *	rp,
		ULONG	colr
	)

static

Definition at line 374 of file plotters.c.

References ami_plot_obtain_pen(), gui_globals::apen, gui_globals::apen_num, ns_color_to_nscss, gui_globals::palette_mapped, ami_plot_pen::pen, RPTAG_APenColor, and gui_globals::shared_pens.

Referenced by ami_arc(), ami_disc(), ami_line(), ami_path(), ami_polygon(), ami_rectangle(), and ami_text().

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◆ ami_plot_setopen()

static void ami_plot_setopen	(	struct gui_globals *	glob,
		struct RastPort *	rp,
		ULONG	colr
	)

static

Definition at line 393 of file plotters.c.

References ami_plot_obtain_pen(), ns_color_to_nscss, gui_globals::open, gui_globals::open_num, gui_globals::palette_mapped, ami_plot_pen::pen, and gui_globals::shared_pens.

Referenced by ami_path().

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◆ ami_polygon()

static nserror ami_polygon	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const int *	p,
		unsigned int	n
	)

static

Plot a polygon.

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.

Parameters

ctx	The current redraw context.
style	Style controlling the polygon plot.
p	verticies of polygon
n	number of verticies.

Returns: NSERROR_OK on success else error code.

Definition at line 853 of file plotters.c.

References ami_plot_setapen(), plot_style_s::fill_colour, NSERROR_OK, NSLOG, redraw_context::priv, and gui_globals::rp.

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◆ ami_rectangle()

static nserror ami_rectangle	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const struct rect *	rect
	)

static

Plots a rectangle.

The rectangle can be filled an outline or both controlled by the plot style The line can be solid, dotted or dashed. Top left corner at (x0,y0) and rectangle has given width and height.

Parameters

ctx	The current redraw context.
style	Style controlling the rectangle plot.
rect	A rectangle defining the line to be drawn

Returns: NSERROR_OK on success else error code.

< Solid colour

< Dotted plot

< dashed plot

Definition at line 790 of file plotters.c.

References ami_plot_setapen(), plot_style_s::fill_colour, plot_style_s::fill_type, NSERROR_OK, NSLOG, PATT_DASH, PATT_DOT, PATT_LINE, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, PLOT_OP_TYPE_NONE, PLOT_OP_TYPE_SOLID, plot_style_fixed_to_int, redraw_context::priv, gui_globals::rp, plot_style_s::stroke_colour, plot_style_s::stroke_type, plot_style_s::stroke_width, rect::x0, rect::x1, rect::y0, and rect::y1.

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◆ ami_text()

static nserror ami_text	(	const struct redraw_context *	ctx,
		const struct plot_font_style *	fstyle,
		int	x,
		int	y,
		const char *	text,
		size_t	length
	)

static

Text plotting.

Parameters

ctx	The current redraw context.
fstyle	plot style for this text
x	x coordinate
y	y coordinate
text	UTF-8 string to plot
length	length of string, in bytes

Returns: NSERROR_OK on success else error code.

Definition at line 1159 of file plotters.c.

References ami_nsfont, ami_plot_setapen(), plot_font_style::foreground, NSERROR_OK, NSLOG, nsoption_bool, redraw_context::priv, gui_globals::rp, text(), and ami_font_functions::text.

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◆ HOOKF()

HOOKF	(	void	,
		ami_bitmap_tile_hook	,
		struct RastPort *	,
		rp	,
		struct BackFillMessage *
	)

Definition at line 538 of file plotters.c.

References ami_gui_get_screen(), BLITA_MaskPlane, BLITA_UseSrcAlpha, bfbitmap::bm, bfbitmap::height, bfbitmap::mask, MINTERM_SRCMASK, bfbitmap::offsetx, bfbitmap::offsety, bfbitmap::palette_mapped, scrn, and bfbitmap::width.

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Variable Documentation

◆ amiplot

const struct plotter_table amiplot

Initial value:

= {
        .rectangle = ami_rectangle,
        .line = ami_line,
        .polygon = ami_polygon,
        .clip = ami_clip,
        .text = ami_text,
        .disc = ami_disc,
        .arc = ami_arc,
        .bitmap = ami_bitmap_tile,
        .path = ami_path,
        .option_knockout = true,
}

Definition at line 1180 of file plotters.c.

Referenced by ami_cw_redraw_rect(), ami_do_redraw(), ami_do_redraw_limits(), and bitmap_render().

◆ init_layers_count

int init_layers_count = 0

static

Definition at line 96 of file plotters.c.

Referenced by ami_plot_ra_alloc(), and ami_plot_ra_free().

◆ palette_mapped

bool palette_mapped = true

static

Definition at line 98 of file plotters.c.

Referenced by ami_bitmap_get_native(), ami_plot_ra_alloc(), and ami_plot_screen_is_palettemapped().

◆ pool_pens

APTR pool_pens = NULL

static

Definition at line 97 of file plotters.c.

Referenced by ami_plot_obtain_pen(), ami_plot_ra_alloc(), ami_plot_ra_free(), and ami_plot_release_pens().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ AREA_SIZE

◆ M_PI

◆ PATT_DASH

◆ PATT_DOT

◆ PATT_LINE

Function Documentation

◆ ami_arc()

◆ ami_arc_gfxlib()

◆ ami_bezier()

◆ ami_bitmap()

◆ ami_bitmap_tile()

◆ ami_clearclipreg()

◆ ami_clip()

◆ ami_disc()

◆ ami_line()

◆ ami_path()

◆ ami_plot_clear_bbox()

◆ ami_plot_obtain_pen()

◆ ami_plot_ra_alloc()

◆ ami_plot_ra_free()

◆ ami_plot_ra_get_bitmap()

◆ ami_plot_ra_get_rastport()

◆ ami_plot_ra_get_size()

◆ ami_plot_ra_set_pen_list()

◆ ami_plot_release_pens()

◆ ami_plot_screen_is_palettemapped()

◆ ami_plot_setapen()

◆ ami_plot_setopen()

◆ ami_polygon()

◆ ami_rectangle()

◆ ami_text()

◆ HOOKF()

Variable Documentation

◆ amiplot

◆ init_layers_count

◆ palette_mapped

◆ pool_pens