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//----------------------------------------------------------------------------
// XYQ: 2006-01-22 Copied from AGG project.
// TODO: This file uses intensive floating point operations, so it's NOT suitable
// for platforms like Symbian OS. We need to change to FIX format.
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.3
// Copyright (C) 2002-2005 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
//----------------------------------------------------------------------------
//
// Class path_storage
//
//----------------------------------------------------------------------------
#include "agg_math.h"
#include "agg_path_storage.h"
#include "core/fxcrt/fx_basic.h"
namespace agg
{
path_storage::~path_storage()
{
if(m_total_blocks) {
float** coord_blk = m_coord_blocks + m_total_blocks - 1;
while(m_total_blocks--) {
FX_Free(*coord_blk);
--coord_blk;
}
FX_Free(m_coord_blocks);
}
}
path_storage::path_storage() :
m_total_vertices(0),
m_total_blocks(0),
m_max_blocks(0),
m_coord_blocks(0),
m_cmd_blocks(0),
m_iterator(0)
{
}
void path_storage::allocate_block(unsigned nb)
{
if(nb >= m_max_blocks) {
float** new_coords =
FX_Alloc2D(float*, m_max_blocks + block_pool, 2);
unsigned char** new_cmds =
(unsigned char**)(new_coords + m_max_blocks + block_pool);
if(m_coord_blocks) {
memcpy(new_coords, m_coord_blocks, m_max_blocks * sizeof(float*));
memcpy(new_cmds, m_cmd_blocks, m_max_blocks * sizeof(unsigned char*));
FX_Free(m_coord_blocks);
}
m_coord_blocks = new_coords;
m_cmd_blocks = new_cmds;
m_max_blocks += block_pool;
}
m_coord_blocks[nb] =
FX_Alloc( float, block_size * 2 +
block_size /
(sizeof(float) / sizeof(unsigned char)));
m_cmd_blocks[nb] =
(unsigned char*)(m_coord_blocks[nb] + block_size * 2);
m_total_blocks++;
}
void path_storage::rewind(unsigned path_id)
{
m_iterator = path_id;
}
void path_storage::curve4(float x_ctrl1, float y_ctrl1,
float x_ctrl2, float y_ctrl2,
float x_to, float y_to)
{
add_vertex(x_ctrl1, y_ctrl1, path_cmd_curve4);
add_vertex(x_ctrl2, y_ctrl2, path_cmd_curve4);
add_vertex(x_to, y_to, path_cmd_curve4);
}
void path_storage::end_poly()
{
if(m_total_vertices) {
if(is_vertex(command(m_total_vertices - 1))) {
add_vertex(0, 0, path_cmd_end_poly | path_flags_close);
}
}
}
}
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