src/Image.cpp

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#include <cassert>

#include "Image.h"
#include "RGBAColor.h"


Image::Image(int resX, int resY)
    : mResX(resX), mResY(resY)
{
    assert(resX > 0 && resY > 0);
    mPixels = new RGBAColor[resX*resY];
}


Image::~Image()
{
    delete [] mPixels;
}


const RGBAColor & Image::pixel(int x, int y) const
{
    assert(mPixels != NULL && x >=0 && y >= 0);
    assert(x < mResX && y < mResY);

    // return pixel
    return mPixels[y * mResX + x];
}


void Image::setPixel(const RGBAColor & p, int x, int y)
{
    assert(mPixels != NULL && x >=0 && y >= 0);
    assert(x < mResX && y < mResY);

    // set pixel
    mPixels[y * mResX + x] = p;
}

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