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The World of Computer Software
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World_Of_Computer_Software-02-385-Vol-1of3.iso
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EXAMPLES
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DCLOCK
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SEGMENT.H
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C/C++ Source or Header
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1992-02-04
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2KB
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79 lines
/*
* Copyright (c) 1987, 1988, 1989 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Segment class for digital clock
*/
#ifndef segment_h
#define segment_h
#include "ddata.h"
class Painter;
class Canvas;
class Pattern;
extern int FadeStep;
enum Seg { SegA, SegB, SegC, SegD, SegE, SegF, SegG };
class Segment {
public:
Segment(Seg, float, float);
~Segment();
void Reconfig(Painter*);
void Resize(Canvas*, int);
void Redraw();
boolean On();
boolean Off();
private:
SegPoints p; // polygon points for this segment
Seg whichSeg; // for indexing into segment data array
float Xorg; // fractional amount from canvas origin
float Yorg;
Canvas *canvas; // canvas of DFace
int fullFade;
int fade; // 0 = off; fullFade = on
static Painter* fadePainter[17]; // painters for fading
Pattern* MakePattern(int seed);
void FadeUp () {
if (fade < fullFade) {
fade += FadeStep;
Draw();
}
}
void FadeDown() {
if (fade > 0) {
fade -= FadeStep;
Draw();
}
}
boolean IsOn () { return fade == fullFade; }
boolean IsOff() { return fade == 0; }
void Draw();
};
#endif