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Code Issues 4 Releases Wiki Activity

Whitespace & documentation improvements.

This commit is contained in:
Werner Lemberg 2009-06-18 15:48:21 +02:00
parent 7227114043
commit 8262213192
1 changed files with 69 additions and 66 deletions
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135
src/raster/ftraster.c
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@ -73,13 +73,15 @@
/* profile is simply an array of scanline intersections on a given */
/* dimension. A profile's main attributes are */
/* */
/* o its scanline position boundaries, i.e. `Ymin' and `Ymax'. */
/* o its scanline position boundaries, i.e. `Ymin' and `Ymax' */
/* */
/* o an array of intersection coordinates for each scanline */
/* between `Ymin' and `Ymax'. */
/* between `Ymin' and `Ymax' */
/* */
/* o a direction, indicating whether it was built going `up' or */
/* `down', as this is very important for filling rules. */
/* `down', as this is very important for filling rules */
/* */
/* o its drop-out mode */
/* */
/* 2 - Sweeping the target map's scanlines in order to compute segment */
/* `spans' which are then filled. Additionally, this pass */
@ -89,15 +91,15 @@
/* built from the bottom of the render pool, used as a stack. The */
/* following graphics shows the profile list under construction: */
/* */
/* ____________________________________________________________ _ _ */
/* | | | | | */
/* | profile | coordinates for | profile | coordinates for |--> */
/* | 1 | profile 1 | 2 | profile 2 |--> */
/* |_________|___________________|_________|_________________|__ _ _ */
/* __________________________________________________________ _ _ */
/* | | | | | */
/* | profile | coordinates for | profile | coordinates for |--> */
/* | 1 | profile 1 | 2 | profile 2 |--> */
/* |_________|_________________|_________|_________________|__ _ _ */
/* */
/* ^ ^ */
/* | | */
/* start of render pool top */
/* ^ ^ */
/* | | */
/* start of render pool top */
/* */
/* The top of the profile stack is kept in the `top' variable. */
/* */
@ -200,7 +202,8 @@
#define ft_memset memset
#else /* _STANDALONE_ */
#else /* !_STANDALONE_ */
#include FT_INTERNAL_OBJECTS_H
@ -216,7 +219,7 @@
#define Raster_Err_Unsupported Raster_Err_Cannot_Render_Glyph
#endif /* _STANDALONE_ */
#endif /* !_STANDALONE_ */
#ifndef FT_MEM_SET
@ -374,7 +377,7 @@
#define FT_UNUSED_RASTER do { } while ( 0 )
#else /* FT_STATIC_RASTER */
#else /* !FT_STATIC_RASTER */
#define RAS_ARGS PWorker worker,
@ -386,7 +389,7 @@
#define FT_UNUSED_RASTER FT_UNUSED( worker )
#endif /* FT_STATIC_RASTER */
#endif /* !FT_STATIC_RASTER */
typedef struct TWorker_ TWorker, *PWorker;
@ -419,65 +422,65 @@
#define IS_BOTTOM_OVERSHOOT( x ) ( CEILING( x ) - x >= ras.precision_half )
#define IS_TOP_OVERSHOOT( x ) ( x - FLOOR( x ) >= ras.precision_half )
/* Note that I have moved the location of some fields in the */
/* structure to ensure that the most used variables are used */
/* at the top. Thus, their offset can be coded with less */
/* opcodes, and it results in a smaller executable. */
/* The most used variables are positioned at the top of the structure. */
/* Thus, their offset can be coded with less opcodes, resulting in a */
/* smaller executable. */
struct TWorker_
{
Int precision_bits; /* precision related variables */
Int precision;
Int precision_half;
Long precision_mask;
Int precision_shift;
Int precision_step;
Int precision_jitter;
Int precision_bits; /* precision related variables */
Int precision;
Int precision_half;
Long precision_mask;
Int precision_shift;
Int precision_step;
Int precision_jitter;
Int scale_shift; /* == precision_shift for bitmaps */
Int scale_shift; /* == precision_shift for bitmaps */
/* == precision_shift+1 for pixmaps */
PLong buff; /* The profiles buffer */
PLong sizeBuff; /* Render pool size */
PLong maxBuff; /* Profiles buffer size */
PLong top; /* Current cursor in buffer */
PLong buff; /* The profiles buffer */
PLong sizeBuff; /* Render pool size */
PLong maxBuff; /* Profiles buffer size */
PLong top; /* Current cursor in buffer */
FT_Error error;
FT_Error error;
Int numTurns; /* number of Y-turns in outline */
Int numTurns; /* number of Y-turns in outline */
TPoint* arc; /* current Bezier arc pointer */
TPoint* arc; /* current Bezier arc pointer */
UShort bWidth; /* target bitmap width */
PByte bTarget; /* target bitmap buffer */
PByte gTarget; /* target pixmap buffer */
UShort bWidth; /* target bitmap width */
PByte bTarget; /* target bitmap buffer */
PByte gTarget; /* target pixmap buffer */
Long lastX, lastY, minY, maxY;
Long lastX, lastY;
Long minY, maxY;
UShort num_Profs; /* current number of profiles */
UShort num_Profs; /* current number of profiles */
Bool fresh; /* signals a fresh new profile which */
Bool fresh; /* signals a fresh new profile which */
/* `start' field must be completed */
Bool joint; /* signals that the last arc ended */
Bool joint; /* signals that the last arc ended */
/* exactly on a scanline. Allows */
/* removal of doublets */
PProfile cProfile; /* current profile */
PProfile fProfile; /* head of linked list of profiles */
PProfile gProfile; /* contour's first profile in case */
PProfile cProfile; /* current profile */
PProfile fProfile; /* head of linked list of profiles */
PProfile gProfile; /* contour's first profile in case */
/* of impact */
TStates state; /* rendering state */
TStates state; /* rendering state */
FT_Bitmap target; /* description of target bit/pixmap */
FT_Outline outline;
Long traceOfs; /* current offset in target bitmap */
Long traceG; /* current offset in target pixmap */
Long traceOfs; /* current offset in target bitmap */
Long traceG; /* current offset in target pixmap */
Short traceIncr; /* sweep's increment in target bitmap */
Short traceIncr; /* sweep's increment in target bitmap */
Short gray_min_x; /* current min x during gray rendering */
Short gray_max_x; /* current max x during gray rendering */
Short gray_min_x; /* current min x during gray rendering */
Short gray_max_x; /* current max x during gray rendering */
/* dispatch variables */
@ -486,31 +489,31 @@
Function_Sweep_Span* Proc_Sweep_Drop;
Function_Sweep_Step* Proc_Sweep_Step;
Byte dropOutControl; /* current drop_out control method */
Byte dropOutControl; /* current drop_out control method */
Bool second_pass; /* indicates whether a horizontal pass */
Bool second_pass; /* indicates whether a horizontal pass */
/* should be performed to control */
/* drop-out accurately when calling */
/* Render_Glyph. Note that there is */
/* no horizontal pass during gray */
/* rendering. */
TPoint arcs[3 * MaxBezier + 1]; /* The Bezier stack */
TPoint arcs[3 * MaxBezier + 1]; /* The Bezier stack */
TBand band_stack[16]; /* band stack used for sub-banding */
Int band_top; /* band stack top */
TBand band_stack[16]; /* band stack used for sub-banding */
Int band_top; /* band stack top */
#ifdef FT_RASTER_OPTION_ANTI_ALIASING
Byte* grays;
Byte* grays;
Byte gray_lines[RASTER_GRAY_LINES];
Byte gray_lines[RASTER_GRAY_LINES];
/* Intermediate table used to render the */
/* graylevels pixmaps. */
/* gray_lines is a buffer holding two */
/* monochrome scanlines */
Short gray_width; /* width in bytes of one monochrome */
Short gray_width; /* width in bytes of one monochrome */
/* intermediate scanline of gray_lines. */
/* Each gray pixel takes 2 bits long there */
@ -524,12 +527,12 @@
typedef struct TRaster_
{
char* buffer;
long buffer_size;
void* memory;
PWorker worker;
Byte grays[5];
Short gray_width;
char* buffer;
long buffer_size;
void* memory;
PWorker worker;
Byte grays[5];
Short gray_width;
} TRaster, *PRaster;
@ -538,11 +541,11 @@
static TWorker cur_ras;
#define ras cur_ras
#else
#else /* !FT_STATIC_RASTER */
#define ras (*worker)
#endif /* FT_STATIC_RASTER */
#endif /* !FT_STATIC_RASTER */
#ifdef FT_RASTER_OPTION_ANTI_ALIASING