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57 lines
1.4 KiB
57 lines
1.4 KiB
//========================================================================
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//
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// SplashScreen.h
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//
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//========================================================================
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#ifndef SPLASHSCREEN_H
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#define SPLASHSCREEN_H
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#include <aconf.h>
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#ifdef USE_GCC_PRAGMAS
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#pragma interface
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#endif
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#include "SplashTypes.h"
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//------------------------------------------------------------------------
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// SplashScreen
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//------------------------------------------------------------------------
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class SplashScreen {
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public:
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SplashScreen(SplashScreenParams *params);
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SplashScreen(SplashScreen *screen);
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~SplashScreen();
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SplashScreen *copy() { return new SplashScreen(this); }
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// Return the computed pixel value (0=black, 1=white) for the gray
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// level <value> at (<x>, <y>).
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int test(int x, int y, Guchar value);
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// Returns true if value is above the white threshold or below the
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// black threshold, i.e., if the corresponding halftone will be
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// solid white or black.
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GBool isStatic(Guchar value);
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private:
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void buildDispersedMatrix(int i, int j, int val,
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int delta, int offset);
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void buildClusteredMatrix();
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int distance(int x0, int y0, int x1, int y1);
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void buildSCDMatrix(int r);
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Guchar *mat; // threshold matrix
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int size; // size of the threshold matrix
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Guchar minVal; // any pixel value below minVal generates
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// solid black
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Guchar maxVal; // any pixel value above maxVal generates
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// solid white
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};
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#endif
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