/**
 * @author Edouard DUPIN
 * 
 * @copyright 2011, Edouard DUPIN, all right reserved
 * 
 * @license BSD v3 (see license file)
 */

#include <egami/Image.h>

egami::Image::Image(const ivec2& _size) :
	m_size(_size)
{
	// basic element :
	etk::Color<> tmpBg(0,0,0,0);
	// preallocate data with a basic bg elements :
	m_data.ReSize(m_size.x()*m_size.y(), tmpBg);
	if ((uint32_t)m_size.x()*m_size.y() > m_data.Size()) {
		TK_ERROR("Allocation of data buffer in error");
		return;
	}
}

void egami::Image::Resize(const ivec2& _size, const etk::Color<>& _color)
{
	m_size=_size;
	m_data.ReSize(m_size.x()*m_size.y(), _color);
}

void egami::Image::Resize(const ivec2& _size, const ivec2& _startPos)
{
	if (_size==m_size) {
		// same size ==> nothing to do ...
		return;
	}
	// grow size :
	egami::Image tmpImage(*this);
	m_size=_size;
	etk::Color<> tmpBg(0,0,0,0);
	m_data.ReSize(m_size.x()*m_size.y(), tmpBg);
	for (int32_t jjj=0; jjj<m_size.y(); jjj++) {
		for (int32_t iii=0; iii<m_size.y(); iii++) {
			ivec2 tmppos(iii,jjj);
			Set(tmppos, tmpImage.Get(tmppos));
		}
	}
}


void egami::Image::Clear(etk::Color<> _fill)
{
	for (int32_t iii=0; iii<m_size.x()*m_size.y(); iii++) {
		m_data[iii] = _fill;
	}
}
const etk::Color<>& egami::Image::Get(const ivec2& _pos) const
{
	static const etk::Color<> errorColor(0x00000000);
	if(    _pos.x()>0 && _pos.x()<m_size.x()
	    && _pos.y()>0 && _pos.y()<m_size.y()) {
		return m_data[_pos.x()+_pos.y()*m_size.x()];
	}
	return errorColor;
}

void egami::Image::Set(const ivec2& _pos, const etk::Color<>& _newColor)
{
	if(    _pos.x()>=0 && _pos.x()<m_size.x()
	    && _pos.y()>=0 && _pos.y()<m_size.y()) {
		m_data[_pos.x()+_pos.y()*m_size.x()] = _newColor;
	}
}