Image.h

#ifndef IMAGE_H
#define IMAGE_H

#include <cassert>
#include <vecmath.h>

// Simple image class
class Image
{

public:

    Image( int w, int h )
    {
        width = w;
        height = h;
        data = new Vector3f[ width * height ];
    }
    
    ~Image()
    {
        delete[] data;
    }

    int Width() const
    {
        return width;
    }
    
    int Height() const
    {
        return height;
    }

    const Vector3f& GetPixel( int x, int y ) const
    {
        assert( x >= 0 && x < width );
        assert( y >= 0 && y < height );
        return data[ y * width + x ];
    }

    void SetAllPixels( const Vector3f& color )
    {
        for( int i = 0; i < width * height; ++i )
        {
            data[i] = color;
        }
    }

    void SetPixel(int x, int y, const Vector3f& color)
    {
        assert( x >= 0 && x < width );
        assert( y >= 0 && y < height );
        data[ y * width + x ] = color;
    }

    static Image* LoadPPM( const char* filename );
    void SavePPM( const char* filename ) const; 

    static Image* LoadTGA( const char* filename );
    void SaveTGA( const char* filename ) const; 
	int SaveBMP(const char *filename);
	void SaveImage(const char *filename);
    // extension for image comparison
    static Image* compare( Image* img1, Image* img2 );

private:

    int width;
    int height;
    Vector3f* data;

};

#endif // IMAGE_H