[dense] Add rasterizer functions
* src/dense/ftdense.c: (ONE_PIXEL, TRUNC, UPSCALE, DOWNSCALE, FT_SWAP, FT_MIN, FT_MAX, FT_ABS): New Macros (dense_move_to, dense_line_to, dense_conic_to): Added outline decomposing functions (dense_raster_new, dense_raster_done, dense_raster_reset, dense_raster_set_mode, dense_raster_render): Added interface functions
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/** The rasterizer for the 'dense' renderer */
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/* END */
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#undef FT_COMPONENT
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#define FT_COMPONENT dense
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#include <freetype/ftoutln.h>
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#include <freetype/internal/ftcalc.h>
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#include <freetype/internal/ftdebug.h>
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#include <freetype/internal/ftobjs.h>
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#include <math.h>
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#include "ftdense.h"
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#include "ftdenseerrs.h"
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#define PIXEL_BITS 8
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#define ONE_PIXEL ( 1 << PIXEL_BITS )
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#define TRUNC( x ) (int)( ( x ) >> PIXEL_BITS )
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#define UPSCALE( x ) ( ( x ) * ( ONE_PIXEL >> 6 ) )
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#define DOWNSCALE( x ) ( ( x ) >> ( PIXEL_BITS - 6 ) )
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#define FT_SWAP(a, b) ( (a) ^= (b) ^=(a) ^= (b))
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#define FT_MIN( a, b ) ( (a) < (b) ? (a) : (b) )
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#define FT_MAX( a, b ) ( (a) > (b) ? (a) : (b) )
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#define FT_ABS( a ) ( (a) < 0 ? -(a) : (a) )
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typedef struct dense_TRaster_
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{
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void* memory;
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} dense_TRaster, *dense_PRaster;
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static int
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dense_move_to( const FT_Vector* to, dense_worker* worker )
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{
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FT_Pos x, y;
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x = UPSCALE( to->x );
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y = UPSCALE( to->y );
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worker->prev_x = x;
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worker->prev_y = y;
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return 0;
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}
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static int
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dense_line_to( const FT_Vector* to, dense_worker* worker )
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{
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dense_render_line( worker, UPSCALE( to->x ), UPSCALE( to->y ) );
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dense_move_to( to, worker );
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return 0;
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}
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void
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dense_render_line( dense_worker* worker, TPos tox, TPos toy )
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{
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return;
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}
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static int
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dense_conic_to( const FT_Vector* control,
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const FT_Vector* to,
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dense_worker* worker )
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{
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dense_render_quadratic( worker, control, to );
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return 0;
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}
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void
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dense_render_quadratic( dense_worker* worker,
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FT_Vector* control,
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FT_Vector* to )
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{
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return;
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}
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static int
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dense_cubic_to( const FT_Vector* control1,
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const FT_Vector* control2,
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const FT_Vector* to,
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dense_worker* worker )
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{
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dense_render_cubic( worker, control1, control2, to );
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return 0;
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}
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void
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dense_render_cubic( dense_worker* worker,
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FT_Vector* control_1,
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FT_Vector* control_2,
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FT_Vector* to )
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{
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return;
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}
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static int
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dense_raster_new( FT_Memory memory, dense_PRaster* araster )
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{
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FT_Error error;
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dense_PRaster raster;
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if ( !FT_NEW( raster ) )
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raster->memory = memory;
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*araster = raster;
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return error;
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}
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static void
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dense_raster_done( FT_Raster raster )
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{
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FT_Memory memory = (FT_Memory)( (dense_PRaster)raster )->memory;
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FT_FREE( raster );
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}
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static void
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dense_raster_reset( FT_Raster raster,
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unsigned char* pool_base,
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unsigned long pool_size )
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{
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FT_UNUSED( raster );
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FT_UNUSED( pool_base );
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FT_UNUSED( pool_size );
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}
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static int
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dense_raster_set_mode( FT_Raster raster, unsigned long mode, void* args )
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{
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FT_UNUSED( raster );
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FT_UNUSED( mode );
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FT_UNUSED( args );
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return 0; /* nothing to do */
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}
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FT_DEFINE_OUTLINE_FUNCS( dense_decompose_funcs,
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(FT_Outline_MoveTo_Func)dense_move_to, /* move_to */
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(FT_Outline_LineTo_Func)dense_line_to, /* line_to */
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(FT_Outline_ConicTo_Func)dense_conic_to, /* conic_to */
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(FT_Outline_CubicTo_Func)dense_cubic_to, /* cubic_to */
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0, /* shift */
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0 /* delta */
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)
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static int
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dense_render_glyph( dense_worker* worker, const FT_Bitmap* target )
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{
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FT_Error error = FT_Outline_Decompose( &( worker->outline ),
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&dense_decompose_funcs, worker );
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return error;
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}
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static int
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dense_raster_render( FT_Raster raster, const FT_Raster_Params* params )
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{
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return 0;
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}
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FT_DEFINE_RASTER_FUNCS(
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ft_dense_raster,
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FT_GLYPH_FORMAT_OUTLINE,
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(FT_Raster_New_Func)dense_raster_new, /* raster_new */
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(FT_Raster_Reset_Func)dense_raster_reset, /* raster_reset */
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(FT_Raster_Set_Mode_Func)dense_raster_set_mode, /* raster_set_mode */
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(FT_Raster_Render_Func)dense_raster_render, /* raster_render */
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(FT_Raster_Done_Func)dense_raster_done /* raster_done */
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)
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/* END */
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