/usr/lib/Wt/examples/mandelbrot/MandelbrotImage.h is in witty-examples 3.3.0-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | // This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef MANDELBROT_IMAGE_H_
#define MANDELBROT_IMAGE_H_
#include <Wt/WVirtualImage>
using namespace Wt;
namespace Wt {
class WRasterImage;
}
class MandelbrotImage : public WVirtualImage
{
public:
MandelbrotImage(int width, int height,
int64_t virtualWidth, int64_t virtualHeight,
double bx1, double by1,
double bx2, double by2,
WContainerWidget *parent = 0);
void zoomIn();
void zoomOut();
void generate(int64_t x, int64_t y, WRasterImage *img);
double currentX1() const;
double currentY1() const;
double currentX2() const;
double currentY2() const;
private:
double bx1_, by1_, bwidth_, bheight_;
int maxDepth_;
double bailOut2_;
virtual WResource *render(int64_t x, int64_t y, int w, int h);
double calcPixel(double x, double y);
double convertPixelX(int64_t x) const;
double convertPixelY(int64_t y) const;
};
#endif // MANDELBROT_IMAGE_H_
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