//---------------------------------------------------------------------------- // Anti-Grain Geometry - Version 2.2 // Copyright (C) 2002-2004 Maxim Shemanarev (http://www.antigrain.com) // // 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 //---------------------------------------------------------------------------- #ifndef AGG_PIXFMT_RGB24_INCLUDED #define AGG_PIXFMT_RGB24_INCLUDED #include #include "agg_basics.h" #include "agg_color_rgba8.h" #include "agg_rendering_buffer.h" namespace agg { //=====================================================pixel_formats_rgb24 template class pixel_formats_rgb24 { public: typedef rgba8 color_type; typedef Order order_type; typedef rendering_buffer::row_data row_data; //-------------------------------------------------------------------- pixel_formats_rgb24(rendering_buffer& rb) : m_rbuf(&rb) { } //-------------------------------------------------------------------- unsigned width() const { return m_rbuf->width(); } unsigned height() const { return m_rbuf->height(); } //-------------------------------------------------------------------- color_type pixel(int x, int y) const { int8u* p = m_rbuf->row(y) + x + x + x; return color_type(p[Order::R], p[Order::G], p[Order::B]); } //-------------------------------------------------------------------- row_data span(int x, int y) const { return row_data(x, width() - 1, m_rbuf->row(y) + x * 3); } //-------------------------------------------------------------------- void copy_pixel(int x, int y, const color_type& c) { int8u* p = m_rbuf->row(y) + x + x + x; p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; } //-------------------------------------------------------------------- void blend_pixel(int x, int y, const color_type& c, int8u cover) { int8u* p = m_rbuf->row(y) + x + x + x; int alpha = int(cover) * c.a; if(alpha == 255*255) { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; } else { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((c.r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((c.g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((c.b - b) * alpha) + (b << 16)) >> 16); } } //-------------------------------------------------------------------- void copy_hline(int x, int y, unsigned len, const color_type& c) { int8u* p = m_rbuf->row(y) + x + x + x; do { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; p += 3; } while(--len); } //-------------------------------------------------------------------- void copy_vline(int x, int y, unsigned len, const color_type& c) { int8u* p = m_rbuf->row(y) + x + x + x; do { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; p += m_rbuf->stride(); } while(--len); } //-------------------------------------------------------------------- void blend_hline(int x, int y, unsigned len, const color_type& c, int8u cover) { int8u* p = m_rbuf->row(y) + x + x + x; int alpha = int(cover) * c.a; if(alpha == 255*255) { do { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; p += 3; } while(--len); } else { do { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((c.r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((c.g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((c.b - b) * alpha) + (b << 16)) >> 16); p += 3; } while(--len); } } //-------------------------------------------------------------------- void blend_vline(int x, int y, unsigned len, const color_type& c, int8u cover) { int8u* p = m_rbuf->row(y) + x + x + x; int alpha = int(cover) * c.a; if(alpha == 255*255) { do { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; p += m_rbuf->stride(); } while(--len); } else { do { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((c.r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((c.g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((c.b - b) * alpha) + (b << 16)) >> 16); p += m_rbuf->stride(); } while(--len); } } //-------------------------------------------------------------------- void copy_from(const rendering_buffer& from, int xdst, int ydst, int xsrc, int ysrc, unsigned len) { memmove(m_rbuf->row(ydst) + xdst * 3, (const void*)(from.row(ysrc) + xsrc * 3), len * 3); } //-------------------------------------------------------------------- void blend_solid_hspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { int8u* p = m_rbuf->row(y) + x + x + x; do { int alpha = int(*covers++) * c.a; if(alpha) { if(alpha == 255*255) { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; } else { int r = (int8u)p[Order::R]; int g = (int8u)p[Order::G]; int b = (int8u)p[Order::B]; p[Order::R] = (int8u)((((c.r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((c.g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((c.b - b) * alpha) + (b << 16)) >> 16); } } p += 3; } while(--len); } //-------------------------------------------------------------------- void blend_solid_vspan(int x, int y, unsigned len, const color_type& c, const int8u* covers) { int8u* p = m_rbuf->row(y) + x + x + x; do { int alpha = int(*covers++) * c.a; if(alpha) { if(alpha == 255*255) { p[Order::R] = (int8u)c.r; p[Order::G] = (int8u)c.g; p[Order::B] = (int8u)c.b; } else { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((c.r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((c.g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((c.b - b) * alpha) + (b << 16)) >> 16); } } p += m_rbuf->stride(); } while(--len); } //-------------------------------------------------------------------- void blend_color_hspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, const int8u cover) { int8u* p = m_rbuf->row(y) + x + x + x; do { int alpha = colors->a * (covers ? int(*covers++) : int(cover)); if(alpha) { if(alpha == 255*255) { p[Order::R] = (int8u)colors->r; p[Order::G] = (int8u)colors->g; p[Order::B] = (int8u)colors->b; } else { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((colors->r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((colors->g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((colors->b - b) * alpha) + (b << 16)) >> 16); } } p += 3; ++colors; } while(--len); } //-------------------------------------------------------------------- void blend_color_vspan(int x, int y, unsigned len, const color_type* colors, const int8u* covers, const int8u cover) { int8u* p = m_rbuf->row(y) + x + x + x; do { int alpha = colors->a * (covers ? int(*covers++) : int(cover)); if(alpha) { if(alpha == 255*255) { p[Order::R] = (int8u)colors->r; p[Order::G] = (int8u)colors->g; p[Order::B] = (int8u)colors->b; } else { int r = p[Order::R]; int g = p[Order::G]; int b = p[Order::B]; p[Order::R] = (int8u)((((colors->r - r) * alpha) + (r << 16)) >> 16); p[Order::G] = (int8u)((((colors->g - g) * alpha) + (g << 16)) >> 16); p[Order::B] = (int8u)((((colors->b - b) * alpha) + (b << 16)) >> 16); } } p += m_rbuf->stride(); ++colors; } while(--len); } private: rendering_buffer* m_rbuf; }; typedef pixel_formats_rgb24 pixfmt_rgb24; //----pixfmt_rgb24 typedef pixel_formats_rgb24 pixfmt_bgr24; //----pixfmt_bgr24 } #endif