// mvx Image file
// all things associated with images
// this is really easy stuff here
// most of the manipulation is inline, see "mvxImage" in mvx.h for more

#include "mvx.h"

mvxImage::mvxImage()
{
	mvxImageData = NULL;
	mvxTexture =   NULL;

	// zero out *most* of the paramaters
	memset((void*)&mvxRect, 0, sizeof(mvxRect));
	memset((void*)&mvxScaling, 0, sizeof(mvxScaling));
	memset((void*)&mvxRotationCenter, 0, sizeof(mvxRotationCenter));
	memset((void*)&mvxTranslation, 0, sizeof(mvxTranslation));
	memset((void*)&mvxRotationAngle, 0, sizeof(mvxRotationAngle));
	memset((void*)&mvxColor, 0, sizeof(mvxColor));

	mvxScaling.x = 1;
	mvxScaling.y = 1;
}

mvxImage::mvxImage(LPDIRECT3DDEVICE8 device, char* imgfilename)
{
	mvxImageData = NULL;
	mvxTexture   = NULL;

	D3DXCreateSprite(device, &mvxImageData);

	D3DXCreateTextureFromFile(device, imgfilename, &mvxTexture);
}

mvxImage::~mvxImage()
{
	mvxDestroy();
}

bool mvxImage::mvxCreate(LPDIRECT3DDEVICE8 device, char* imgfilename)
{
	if (mvxImageData)
		return false;   // already exists
	else
		D3DXCreateSprite(device, &mvxImageData);

	if (mvxTexture)
		return false;   // already exists
	else
		D3DXCreateTextureFromFileExA(device,
									 imgfilename,
									 D3DX_DEFAULT,
									 D3DX_DEFAULT,
									 D3DX_DEFAULT,
									 0,
									 D3DFMT_UNKNOWN,
									 D3DPOOL_DEFAULT,
									 D3DX_FILTER_NONE,  // filters
									 D3DX_FILTER_NONE,
									 0xFF000000,        // color key
									 NULL,
									 NULL,
									 &mvxTexture );
	return true;
}

void mvxImage::mvxInit()
{
	mvxDestroy();

	mvxImageData = NULL;
	mvxTexture   = NULL;
}

void mvxImage::mvxDestroy()
{
	if (mvxTexture)
	{
		mvxTexture->Release();
		mvxTexture = NULL;
	}	

	if (mvxImageData)
	{
		mvxImageData->Release();
		mvxImageData = NULL;
	}
}