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The World of Computer Software
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EXAMPLES
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DCLOCK
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SEGMENT.C
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C/C++ Source or Header
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1992-02-04
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117 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
*/
#include "dclock.h"
#include "segment.h"
#include <stdio.h>
Painter* Segment::fadePainter[17];
// pattern initialization
const int myPatSeed[17] = {
0x0000, 0x8000, 0x8020, 0xA020,
0xA0A0, 0xA4A0, 0xA4A1, 0xA5A1,
0xA5A5, 0xA5B5, 0xE5B5, 0xF5B5,
0xF5F5, 0xF5F7, 0xFDF7, 0xFFF7,
0xFFFF
};
Pattern* Segment::MakePattern (int seed) {
Pattern* pat;
int dat[patternHeight];
unsigned int Row[4];
for (int i = 0; i <= 3; i++) {
Row[i] = seed & 0xF;
Row[i] |= Row[i]<<4;
Row[i] |= Row[i]<<8;
Row[i] |= Row[i]<<16;
seed >>= 4;
}
for (i = 0; i <= patternHeight-1; i++) {
dat[i] = Row[i%4];
}
pat = new Pattern(dat);
return pat;
}
Segment::Segment (Seg s, float Xoff, float Yoff) {
whichSeg = s;
Xorg = Xoff;
Yorg = Yoff;
p.count = SegData[whichSeg].count;
fade = 0; // initially off
fullFade = 16;
}
void Segment::Reconfig (Painter* output) {
register int i;
for (i = 0; i <= fullFade; i++) {
Painter* p = new Painter(output);
p->SetPattern(MakePattern(myPatSeed[i]));
fadePainter[i] = p;
}
}
Segment::~Segment () {}
void Segment::Resize (Canvas* c, int height) {
canvas = c;
int w = canvas->Width();
int h = height;
for (int i = 0; i < p.count; i++) {
p.x[i] = Coord((SegData[whichSeg].x[i]+Xorg) * w);
p.y[i] = Coord((SegData[whichSeg].y[i]+Yorg) * h);
}
}
void Segment::Draw() {
fadePainter[fade]->FillPolygon(canvas, p.x, p.y, p.count);
}
void Segment::Redraw () {
if (!IsOff()) {
Draw();
}
}
boolean Segment::On () {
if (!IsOn()) {
FadeUp();
}
return IsOn();
}
boolean Segment::Off () {
if (!IsOff()) {
FadeDown();
}
return IsOff();
}