So. Some themes have objects that seem to be large natural extensions of the landscape. Masks allow maintaining that. Lemme know if it doesn't look good. If it doesn't, can still use for ice/bounce/indestructible. Indestructible bunker object for example.
/***************************************************************************/
/* */
/* ftrend1.c */
/* */
/* The FreeType glyph rasterizer interface (body). */
/* */
/* Copyright 1996-2001, 2002, 2003, 2005, 2006 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#include FT_OUTLINE_H
#include "ftrend1.h"
#include "ftraster.h"
#include "rastpic.h"
#include "rasterrs.h"
/* initialize renderer -- init its raster */
static FT_Error
ft_raster1_init( FT_Renderer render )
{
FT_Library library = FT_MODULE_LIBRARY( render );
render->clazz->raster_class->raster_reset( render->raster,
library->raster_pool,
library->raster_pool_size );
return Raster_Err_Ok;
}
/* set render-specific mode */
static FT_Error
ft_raster1_set_mode( FT_Renderer render,
FT_ULong mode_tag,
FT_Pointer data )
{
/* we simply pass it to the raster */
return render->clazz->raster_class->raster_set_mode( render->raster,
mode_tag,
data );
}
/* transform a given glyph image */
static FT_Error
ft_raster1_transform( FT_Renderer render,
FT_GlyphSlot slot,
const FT_Matrix* matrix,
const FT_Vector* delta )
{
FT_Error error = Raster_Err_Ok;
if ( slot->format != render->glyph_format )
{
error = Raster_Err_Invalid_Argument;
goto Exit;
}
if ( matrix )
FT_Outline_Transform( &slot->outline, matrix );
if ( delta )
FT_Outline_Translate( &slot->outline, delta->x, delta->y );
Exit:
return error;
}
/* return the glyph's control box */
static void
ft_raster1_get_cbox( FT_Renderer render,
FT_GlyphSlot slot,
FT_BBox* cbox )
{
FT_MEM_ZERO( cbox, sizeof ( *cbox ) );
if ( slot->format == render->glyph_format )
FT_Outline_Get_CBox( &slot->outline, cbox );
}
/* convert a slot's glyph image into a bitmap */
static FT_Error
ft_raster1_render( FT_Renderer render,
FT_GlyphSlot slot,
FT_Render_Mode mode,
const FT_Vector* origin )
{
FT_Error error;
FT_Outline* outline;
FT_BBox cbox;
FT_UInt width, height, pitch;
FT_Bitmap* bitmap;
FT_Memory memory;
FT_Raster_Params params;
/* check glyph image format */
if ( slot->format != render->glyph_format )
{
error = Raster_Err_Invalid_Argument;
goto Exit;
}
/* check rendering mode */
#ifndef FT_CONFIG_OPTION_PIC
if ( mode != FT_RENDER_MODE_MONO )
{
/* raster1 is only capable of producing monochrome bitmaps */
if ( render->clazz == &ft_raster1_renderer_class )
return Raster_Err_Cannot_Render_Glyph;
}
else
{
/* raster5 is only capable of producing 5-gray-levels bitmaps */
if ( render->clazz == &ft_raster5_renderer_class )
return Raster_Err_Cannot_Render_Glyph;
}
#else /* FT_CONFIG_OPTION_PIC */
/* When PIC is enabled, we cannot get to the class object */
/* so instead we check the final character in the class name */
/* ("raster5" or "raster1"). Yes this is a hack. */
/* The "correct" thing to do is have different render function */
/* for each of the classes. */
if ( mode != FT_RENDER_MODE_MONO )
{
/* raster1 is only capable of producing monochrome bitmaps */
if ( render->clazz->root.module_name[6] == '1' )
return Raster_Err_Cannot_Render_Glyph;
}
else
{
/* raster5 is only capable of producing 5-gray-levels bitmaps */
if ( render->clazz->root.module_name[6] == '5' )
return Raster_Err_Cannot_Render_Glyph;
}
#endif /* FT_CONFIG_OPTION_PIC */
outline = &slot->outline;
/* translate the outline to the new origin if needed */
if ( origin )
FT_Outline_Translate( outline, origin->x, origin->y );
/* compute the control box, and grid fit it */
FT_Outline_Get_CBox( outline, &cbox );
/* undocumented but confirmed: bbox values get rounded */
#if 1
cbox.xMin = FT_PIX_ROUND( cbox.xMin );
cbox.yMin = FT_PIX_ROUND( cbox.yMin );
cbox.xMax = FT_PIX_ROUND( cbox.xMax );
cbox.yMax = FT_PIX_ROUND( cbox.yMax );
#else
cbox.xMin = FT_PIX_FLOOR( cbox.xMin );
cbox.yMin = FT_PIX_FLOOR( cbox.yMin );
cbox.xMax = FT_PIX_CEIL( cbox.xMax );
cbox.yMax = FT_PIX_CEIL( cbox.yMax );
#endif
width = (FT_UInt)( ( cbox.xMax - cbox.xMin ) >> 6 );
height = (FT_UInt)( ( cbox.yMax - cbox.yMin ) >> 6 );
bitmap = &slot->bitmap;
memory = render->root.memory;
/* release old bitmap buffer */
if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
{
FT_FREE( bitmap->buffer );
slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
}
/* allocate new one, depends on pixel format */
if ( !( mode & FT_RENDER_MODE_MONO ) )
{
/* we pad to 32 bits, only for backwards compatibility with FT 1.x */
pitch = FT_PAD_CEIL( width, 4 );
bitmap->pixel_mode = FT_PIXEL_MODE_GRAY;
bitmap->num_grays = 256;
}
else
{
pitch = ( ( width + 15 ) >> 4 ) << 1;
bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
}
bitmap->width = width;
bitmap->rows = height;
bitmap->pitch = pitch;
if ( FT_ALLOC_MULT( bitmap->buffer, pitch, height ) )
goto Exit;
slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
/* translate outline to render it into the bitmap */
FT_Outline_Translate( outline, -cbox.xMin, -cbox.yMin );
/* set up parameters */
params.target = bitmap;
params.source = outline;
params.flags = 0;
if ( bitmap->pixel_mode == FT_PIXEL_MODE_GRAY )
params.flags |= FT_RASTER_FLAG_AA;
/* render outline into the bitmap */
error = render->raster_render( render->raster, ¶ms );
FT_Outline_Translate( outline, cbox.xMin, cbox.yMin );
if ( error )
goto Exit;
slot->format = FT_GLYPH_FORMAT_BITMAP;
slot->bitmap_left = (FT_Int)( cbox.xMin >> 6 );
slot->bitmap_top = (FT_Int)( cbox.yMax >> 6 );
Exit:
return error;
}
FT_DEFINE_RENDERER(ft_raster1_renderer_class,
FT_MODULE_RENDERER,
sizeof( FT_RendererRec ),
"raster1",
0x10000L,
0x20000L,
0, /* module specific interface */
(FT_Module_Constructor)ft_raster1_init,
(FT_Module_Destructor) 0,
(FT_Module_Requester) 0
,
FT_GLYPH_FORMAT_OUTLINE,
(FT_Renderer_RenderFunc) ft_raster1_render,
(FT_Renderer_TransformFunc)ft_raster1_transform,
(FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox,
(FT_Renderer_SetModeFunc) ft_raster1_set_mode,
(FT_Raster_Funcs*) &FT_STANDARD_RASTER_GET
)
/* This renderer is _NOT_ part of the default modules; you will need */
/* to register it by hand in your application. It should only be */
/* used for backwards-compatibility with FT 1.x anyway. */
/* */
FT_DEFINE_RENDERER(ft_raster5_renderer_class,
FT_MODULE_RENDERER,
sizeof( FT_RendererRec ),
"raster5",
0x10000L,
0x20000L,
0, /* module specific interface */
(FT_Module_Constructor)ft_raster1_init,
(FT_Module_Destructor) 0,
(FT_Module_Requester) 0
,
FT_GLYPH_FORMAT_OUTLINE,
(FT_Renderer_RenderFunc) ft_raster1_render,
(FT_Renderer_TransformFunc)ft_raster1_transform,
(FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox,
(FT_Renderer_SetModeFunc) ft_raster1_set_mode,
(FT_Raster_Funcs*) &FT_STANDARD_RASTER_GET
)
/* END */