remove needless header file
This commit is contained in:
Jiri Drbalek
parent
324f70652b
commit
51878b3321
1 changed files with 0 additions and 158 deletions
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/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#include <cstdint>
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#include "agg_span_image_filter_rgba.h"
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namespace mapnik {
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using namespace agg;
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template<class Source>
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class span_image_resample_rgba_affine :
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public span_image_resample_affine<Source>
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{
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public:
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using source_type = Source;
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using color_type = typename source_type::color_type;
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using order_type = typename source_type::order_type;
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using base_type = span_image_resample_affine<source_type>;
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using interpolator_type = typename base_type::interpolator_type;
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using value_type = typename color_type::value_type;
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using long_type = typename color_type::long_type;
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enum base_scale_e
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{
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base_shift = color_type::base_shift,
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base_mask = color_type::base_mask,
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downscale_shift = image_filter_shift
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};
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//--------------------------------------------------------------------
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span_image_resample_rgba_affine() {}
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span_image_resample_rgba_affine(source_type& src,
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interpolator_type& inter,
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const image_filter_lut& filter) :
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base_type(src, inter, filter)
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{}
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//--------------------------------------------------------------------
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void generate(color_type* span, int x, int y, unsigned len)
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{
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base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
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y + base_type::filter_dy_dbl(), len);
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long_type fg[4];
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int diameter = base_type::filter().diameter();
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int filter_scale = diameter << image_subpixel_shift;
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int radius_x = (diameter * base_type::m_rx) >> 1;
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int radius_y = (diameter * base_type::m_ry) >> 1;
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int len_x_lr =
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(diameter * base_type::m_rx + image_subpixel_mask) >>
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image_subpixel_shift;
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const std::int16_t* weight_array = base_type::filter().weight_array();
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do
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{
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base_type::interpolator().coordinates(&x, &y);
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x += base_type::filter_dx_int() - radius_x;
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y += base_type::filter_dy_int() - radius_y;
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fg[0] = fg[1] = fg[2] = fg[3] = image_filter_scale / 2;
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int y_lr = y >> image_subpixel_shift;
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int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
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base_type::m_ry_inv) >>
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image_subpixel_shift;
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int total_weight = 0;
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int x_lr = x >> image_subpixel_shift;
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int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
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base_type::m_rx_inv) >>
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image_subpixel_shift;
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int x_hr2 = x_hr;
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const value_type* fg_ptr =
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(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
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for(;;)
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{
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int weight_y = weight_array[y_hr];
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x_hr = x_hr2;
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for(;;)
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{
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int weight = (weight_y * weight_array[x_hr] +
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image_filter_scale / 2) >>
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downscale_shift;
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fg[0] += *fg_ptr++ * weight;
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fg[1] += *fg_ptr++ * weight;
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fg[2] += *fg_ptr++ * weight;
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fg[3] += *fg_ptr * weight;
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total_weight += weight;
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x_hr += base_type::m_rx_inv;
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if(x_hr >= filter_scale) break;
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fg_ptr = (const value_type*)base_type::source().next_x();
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}
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y_hr += base_type::m_ry_inv;
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if(y_hr >= filter_scale) break;
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fg_ptr = (const value_type*)base_type::source().next_y();
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}
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if (total_weight)
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{
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fg[3] /= total_weight;
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fg[0] /= total_weight;
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fg[1] /= total_weight;
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fg[2] /= total_weight;
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if(fg[0] < 0) fg[0] = 0;
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if(fg[1] < 0) fg[1] = 0;
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if(fg[2] < 0) fg[2] = 0;
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if(fg[3] < 0) fg[3] = 0;
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}
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else
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{
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fg[0] = 0;
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fg[1] = 0;
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fg[2] = 0;
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fg[3] = 0;
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}
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if(fg[order_type::R] > base_mask) fg[order_type::R] = base_mask;
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if(fg[order_type::G] > base_mask) fg[order_type::G] = base_mask;
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if(fg[order_type::B] > base_mask) fg[order_type::B] = base_mask;
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if(fg[order_type::A] > base_mask) fg[order_type::A] = base_mask;
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span->r = (value_type)fg[order_type::R];
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span->g = (value_type)fg[order_type::G];
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span->b = (value_type)fg[order_type::B];
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span->a = (value_type)fg[order_type::A];
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++span;
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++base_type::interpolator();
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} while(--len);
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}
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};
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}
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