mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-07-18 20:06:04 +02:00
429 lines
9.9 KiB
ObjectPascal
429 lines
9.9 KiB
ObjectPascal
//----------------------------------------------------------------------------
|
|
// Anti-Grain Geometry - Version 2.4 (Public License)
|
|
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
|
|
//
|
|
// Anti-Grain Geometry - Version 2.4 Release Milano 3 (AggPas 2.4 RM3)
|
|
// Pascal Port By: Milan Marusinec alias Milano
|
|
// milan@marusinec.sk
|
|
// http://www.aggpas.org
|
|
// Copyright (c) 2005-2006
|
|
//
|
|
// Permission to copy, use, modify, sell and distribute this software
|
|
// is granted provided this copyright notice appears in all copies.
|
|
// This software is provided "as is" without express or implied
|
|
// warranty, and with no claim as to its suitability for any purpose.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
// Contact: mcseem@antigrain.com
|
|
// mcseemagg@yahoo.com
|
|
// http://www.antigrain.com
|
|
//
|
|
// [Pascal Port History] -----------------------------------------------------
|
|
//
|
|
// 23.06.2006-Milano: ptrcomp adjustments
|
|
// 06.03.2006-Milano: Unit port establishment
|
|
//
|
|
{ agg_span_pattern_resample_gray.pas {untested}
|
|
unit
|
|
agg_span_pattern_resample_gray ;
|
|
|
|
INTERFACE
|
|
|
|
{$I agg_mode.inc }
|
|
{$Q- }
|
|
{$R- }
|
|
uses
|
|
agg_basics ,
|
|
agg_color ,
|
|
agg_span_pattern ,
|
|
agg_span_image_resample ,
|
|
agg_span_interpolator_linear ,
|
|
agg_rendering_buffer ,
|
|
agg_span_allocator ,
|
|
agg_image_filters ;
|
|
|
|
{ TYPES DEFINITION }
|
|
const
|
|
base_shift = agg_color.base_shift;
|
|
base_mask = agg_color.base_mask;
|
|
downscale_shift = image_filter_shift;
|
|
|
|
type
|
|
span_pattern_resample_gray_affine_ptr = ^span_pattern_resample_gray_affine;
|
|
span_pattern_resample_gray_affine = object(span_image_resample_affine )
|
|
m_wrap_mode_x ,
|
|
m_wrap_mode_y : wrap_mode_ptr;
|
|
|
|
constructor Construct(alloc : span_allocator_ptr; WX ,WY : wrap_mode_ptr ); overload;
|
|
constructor Construct(
|
|
alloc : span_allocator_ptr;
|
|
src : rendering_buffer_ptr;
|
|
interpolator : span_interpolator_ptr;
|
|
filter : image_filter_lut_ptr;
|
|
WX ,WY : wrap_mode_ptr ); overload;
|
|
|
|
procedure source_image_(src : rendering_buffer_ptr );
|
|
|
|
function generate(x ,y : int; len : unsigned ) : aggclr_ptr; virtual;
|
|
|
|
end;
|
|
|
|
span_pattern_resample_gray_ptr = ^span_pattern_resample_gray;
|
|
span_pattern_resample_gray = object(span_image_resample )
|
|
m_wrap_mode_x ,
|
|
m_wrap_mode_y : wrap_mode_ptr;
|
|
|
|
constructor Construct(alloc : span_allocator_ptr; WX ,WY : wrap_mode_ptr ); overload;
|
|
constructor Construct(
|
|
alloc : span_allocator_ptr;
|
|
src : rendering_buffer_ptr;
|
|
interpolator : span_interpolator_ptr;
|
|
filter : image_filter_lut_ptr;
|
|
WX ,WY : wrap_mode_ptr ); overload;
|
|
|
|
procedure source_image_(src : rendering_buffer_ptr );
|
|
|
|
function generate(x ,y : int; len : unsigned ) : aggclr_ptr; virtual;
|
|
|
|
end;
|
|
|
|
{ GLOBAL PROCEDURES }
|
|
|
|
|
|
IMPLEMENTATION
|
|
{ LOCAL VARIABLES & CONSTANTS }
|
|
{ UNIT IMPLEMENTATION }
|
|
{ CONSTRUCT }
|
|
constructor span_pattern_resample_gray_affine.Construct(alloc : span_allocator_ptr; WX ,WY : wrap_mode_ptr );
|
|
begin
|
|
inherited Construct(alloc );
|
|
|
|
m_wrap_mode_x:=WX;
|
|
m_wrap_mode_y:=WY;
|
|
|
|
m_wrap_mode_x.init(1 );
|
|
m_wrap_mode_y.init(1 );
|
|
|
|
end;
|
|
|
|
{ CONSTRUCT }
|
|
constructor span_pattern_resample_gray_affine.Construct(
|
|
alloc : span_allocator_ptr;
|
|
src : rendering_buffer_ptr;
|
|
interpolator : span_interpolator_ptr;
|
|
filter : image_filter_lut_ptr;
|
|
WX ,WY : wrap_mode_ptr );
|
|
var
|
|
rgba : aggclr;
|
|
|
|
begin
|
|
rgba.ConstrInt(0 ,0 );
|
|
|
|
inherited Construct(alloc ,src ,@rgba ,interpolator ,filter );
|
|
|
|
m_wrap_mode_x:=WX;
|
|
m_wrap_mode_y:=WY;
|
|
|
|
m_wrap_mode_x.init(src._width );
|
|
m_wrap_mode_y.init(src._height );
|
|
|
|
end;
|
|
|
|
{ SOURCE_IMAGE_ }
|
|
procedure span_pattern_resample_gray_affine.source_image_;
|
|
begin
|
|
inherited source_image_(src );
|
|
|
|
m_wrap_mode_x.init(src._width );
|
|
m_wrap_mode_y.init(src._height );
|
|
|
|
end;
|
|
|
|
{ GENERATE }
|
|
function span_pattern_resample_gray_affine.generate;
|
|
var
|
|
span : aggclr_ptr;
|
|
intr : span_interpolator_ptr;
|
|
|
|
fg ,diameter ,filter_size ,radius_x ,radius_y ,{%H-}maxx ,{%H-}maxy ,y_lr ,y_hr ,
|
|
total_weight ,x_lr_ini ,x_hr_ini ,weight_y ,x_lr ,x_hr ,weight : int;
|
|
|
|
row_ptr ,fg_ptr : int8u_ptr;
|
|
|
|
weight_array : int16_ptr;
|
|
|
|
begin
|
|
span:=_allocator.span;
|
|
intr:=_interpolator;
|
|
|
|
intr.begin_(x + filter_dx_dbl ,y + filter_dy_dbl ,len );
|
|
|
|
diameter :=_filter.diameter;
|
|
filter_size:=diameter shl image_subpixel_shift;
|
|
|
|
radius_x:=shr_int32(diameter * m_rx ,1 );
|
|
radius_y:=shr_int32(diameter * m_ry ,1 );
|
|
|
|
maxx:=_source_image._width - 1;
|
|
maxy:=_source_image._height - 1;
|
|
|
|
weight_array:=_filter.weight_array;
|
|
|
|
repeat
|
|
intr.coordinates(@x ,@y );
|
|
|
|
inc(x ,filter_dx_int - radius_x );
|
|
inc(y ,filter_dy_int - radius_y );
|
|
|
|
fg:=image_filter_size div 2;
|
|
|
|
y_lr:=m_wrap_mode_y.func_operator(shr_int32(y ,image_subpixel_shift ) );
|
|
y_hr:=
|
|
shr_int32(
|
|
(image_subpixel_mask - (y and image_subpixel_mask ) ) *
|
|
m_ry_inv ,image_subpixel_shift );
|
|
|
|
total_weight:=0;
|
|
|
|
x_lr_ini:=shr_int32(x ,image_subpixel_shift );
|
|
x_hr_ini:=
|
|
shr_int32(
|
|
(image_subpixel_mask - (x and image_subpixel_mask ) ) *
|
|
m_rx_inv ,image_subpixel_shift );
|
|
|
|
repeat
|
|
weight_y:=int16_ptr(ptrcomp(weight_array ) + y_hr * sizeof(int16 ) )^;
|
|
|
|
x_lr:=m_wrap_mode_x.func_operator(x_lr_ini );
|
|
x_hr:=x_hr_ini;
|
|
|
|
row_ptr:=_source_image.row(y_lr );
|
|
|
|
repeat
|
|
fg_ptr:=int8u_ptr(ptrcomp(row_ptr ) + x_lr * sizeof(int8u ) );
|
|
weight:=
|
|
shr_int32(
|
|
weight_y *
|
|
int16_ptr(ptrcomp(weight_array ) + x_hr * sizeof(int16 ) )^ +
|
|
image_filter_size div 2 ,downscale_shift );
|
|
|
|
inc(fg ,fg_ptr^ * weight );
|
|
inc(total_weight ,weight );
|
|
inc(x_hr ,m_rx_inv );
|
|
|
|
x_lr:=m_wrap_mode_x.inc_operator;
|
|
|
|
until x_hr >= filter_size;
|
|
|
|
inc(y_hr ,m_ry_inv );
|
|
|
|
y_lr:=m_wrap_mode_y.inc_operator;
|
|
|
|
until y_hr >= filter_size;
|
|
|
|
fg:=fg div total_weight;
|
|
|
|
if fg < 0 then
|
|
fg:=0;
|
|
|
|
if fg > base_mask then
|
|
fg:=base_mask;
|
|
|
|
span.v:=int8u(fg );
|
|
span.a:=int8u(base_mask );
|
|
|
|
inc(ptrcomp(span ) ,sizeof(aggclr ) );
|
|
|
|
intr.inc_operator;
|
|
|
|
dec(len );
|
|
|
|
until len = 0;
|
|
|
|
result:=_allocator.span;
|
|
|
|
end;
|
|
|
|
{ CONSTRUCT }
|
|
constructor span_pattern_resample_gray.Construct(alloc : span_allocator_ptr; WX ,WY : wrap_mode_ptr );
|
|
begin
|
|
inherited Construct(alloc );
|
|
|
|
m_wrap_mode_x:=WX;
|
|
m_wrap_mode_y:=WY;
|
|
|
|
m_wrap_mode_x.init(1 );
|
|
m_wrap_mode_y.init(1 );
|
|
|
|
end;
|
|
|
|
{ CONSTRUCT }
|
|
constructor span_pattern_resample_gray.Construct(
|
|
alloc : span_allocator_ptr;
|
|
src : rendering_buffer_ptr;
|
|
interpolator : span_interpolator_ptr;
|
|
filter : image_filter_lut_ptr;
|
|
WX ,WY : wrap_mode_ptr );
|
|
var
|
|
rgba : aggclr;
|
|
|
|
begin
|
|
rgba.ConstrInt(0 ,0 );
|
|
|
|
inherited Construct(alloc ,src ,@rgba ,interpolator ,filter );
|
|
|
|
m_wrap_mode_x:=WX;
|
|
m_wrap_mode_y:=WY;
|
|
|
|
m_wrap_mode_x.init(src._width );
|
|
m_wrap_mode_y.init(src._height );
|
|
|
|
end;
|
|
|
|
{ SOURCE_IMAGE_ }
|
|
procedure span_pattern_resample_gray.source_image_;
|
|
begin
|
|
inherited source_image_(src );
|
|
|
|
m_wrap_mode_x.init(src._width );
|
|
m_wrap_mode_y.init(src._height );
|
|
|
|
end;
|
|
|
|
{ GENERATE }
|
|
function span_pattern_resample_gray.generate;
|
|
var
|
|
span : aggclr_ptr;
|
|
intr : span_interpolator_ptr;
|
|
|
|
fg ,diameter ,filter_size ,rx ,ry ,rx_inv ,ry_inv ,radius_x ,radius_y ,
|
|
{%H-}maxx ,{%H-}maxy ,y_lr ,y_hr ,total_weight ,x_lr_ini ,x_hr_ini ,weight_y ,
|
|
x_lr ,x_hr ,weight : int;
|
|
|
|
row_ptr ,fg_ptr : int8u_ptr;
|
|
|
|
weight_array : int16_ptr;
|
|
|
|
begin
|
|
span:=_allocator.span;
|
|
intr:=_interpolator;
|
|
|
|
intr.begin_(x + filter_dx_dbl ,y + filter_dy_dbl ,len );
|
|
|
|
diameter :=_filter.diameter;
|
|
filter_size :=diameter shl image_subpixel_shift;
|
|
weight_array:=_filter.weight_array;
|
|
|
|
repeat
|
|
rx_inv:=image_subpixel_size;
|
|
ry_inv:=image_subpixel_size;
|
|
|
|
intr.coordinates(@x ,@y );
|
|
intr.local_scale(@rx ,@ry );
|
|
|
|
rx:=shr_int32(rx * m_blur_x ,image_subpixel_shift );
|
|
ry:=shr_int32(ry * m_blur_y ,image_subpixel_shift );
|
|
|
|
if rx < image_subpixel_size then
|
|
rx:=image_subpixel_size
|
|
else
|
|
begin
|
|
if rx > image_subpixel_size * m_scale_limit then
|
|
rx:=image_subpixel_size * m_scale_limit;
|
|
|
|
rx_inv:=image_subpixel_size * image_subpixel_size div rx;
|
|
|
|
end;
|
|
|
|
if ry < image_subpixel_size then
|
|
ry:=image_subpixel_size
|
|
else
|
|
begin
|
|
if ry > image_subpixel_size * m_scale_limit then
|
|
ry:=image_subpixel_size * m_scale_limit;
|
|
|
|
ry_inv:=image_subpixel_size * image_subpixel_size div ry;
|
|
|
|
end;
|
|
|
|
radius_x:=shr_int32(diameter * rx ,1 );
|
|
radius_y:=shr_int32(diameter * ry ,1 );
|
|
|
|
maxx:=_source_image._width - 1;
|
|
maxy:=_source_image._height - 1;
|
|
|
|
inc(x ,filter_dx_int - radius_x );
|
|
inc(y ,filter_dy_int - radius_y );
|
|
|
|
fg:=image_filter_size div 2;
|
|
|
|
y_lr:=m_wrap_mode_y.func_operator(shr_int32(y ,image_subpixel_shift ) );
|
|
y_hr:=
|
|
shr_int32(
|
|
(image_subpixel_mask - (y and image_subpixel_mask ) ) *
|
|
ry_inv ,image_subpixel_shift );
|
|
|
|
total_weight:=0;
|
|
|
|
x_lr_ini:=shr_int32(x ,image_subpixel_shift );
|
|
x_hr_ini:=
|
|
shr_int32(
|
|
(image_subpixel_mask - (x and image_subpixel_mask ) ) *
|
|
rx_inv ,image_subpixel_shift );
|
|
|
|
repeat
|
|
weight_y:=int16_ptr(ptrcomp(weight_array ) + y_hr * sizeof(int16 ) )^;
|
|
|
|
x_lr:=m_wrap_mode_x.func_operator(x_lr_ini );
|
|
x_hr:=x_hr_ini;
|
|
|
|
row_ptr:=_source_image.row(y_lr );
|
|
|
|
repeat
|
|
fg_ptr:=int8u_ptr(ptrcomp(row_ptr ) + x_lr * sizeof(int8u ) );
|
|
weight:=
|
|
shr_int32(
|
|
weight_y *
|
|
int16_ptr(ptrcomp(weight_array ) + x_hr * sizeof(int16 ) )^ +
|
|
image_filter_size div 2 ,downscale_shift );
|
|
|
|
inc(fg ,fg_ptr^ * weight );
|
|
inc(total_weight ,weight );
|
|
inc(x_hr ,rx_inv );
|
|
|
|
x_lr:=m_wrap_mode_x.inc_operator;
|
|
|
|
until x_hr > filter_size;
|
|
|
|
inc(y_hr ,ry_inv );
|
|
|
|
y_lr:=m_wrap_mode_y.inc_operator;
|
|
|
|
until y_hr >= filter_size;
|
|
|
|
fg:=fg div total_weight;
|
|
|
|
if fg < 0 then
|
|
fg:=0;
|
|
|
|
if fg > base_mask then
|
|
fg:=base_mask;
|
|
|
|
span.v:=int8u(fg );
|
|
span.a:=int8u(base_mask );
|
|
|
|
inc(ptrcomp(span ) ,sizeof(aggclr ) );
|
|
|
|
intr.inc_operator;
|
|
|
|
dec(len );
|
|
|
|
until len = 0;
|
|
|
|
result:=_allocator.span;
|
|
|
|
end;
|
|
|
|
END.
|
|
|