float sample_wave(float freq, float coord, float pixsize)
{
float fac, frac, retval;
int part1, part2;
if(pixsize > freq) return 0.5;
pixsize/= freq;
fac= coord/freq;
part1= ffloor(fac);
frac= fac - part1;
if(part1 & 1) retval= 0.0;
else retval= 1.0;
if(pixsize != 0.0) {
/* is coord+pixsize another value? */
part2= ffloor(fac + pixsize);
if(part1==part2) return retval;
/* antialias */
if(retval==1.0) retval= (1.0-frac)/pixsize;
else retval= 1.0-(1.0-frac)/pixsize;
}
return retval;
}
double Gdal::Band::GetDoubleAt(Pointf pt) const
{
Pointf src = pt * owner.GetInverseTransform();
int x = ffloor(src.x);
int y = ffloor(src.y);
if(x < 0 || x >= size.cx || y < 0 || y >= size.cy)
return Null;
return GetDouble(x, y);
}
char *proobraz(char* input)
{
input = registr(input);
input= ficha(input);
for (int i=0;i<strlen(input);i++)
{
ssin(i,input);
ccos(i,input);
aasin(i,input);
aacos(i,input);
aatan(i,input);
cceil(i,input);
cch(i,input);
eexp(i,input);
aabs(i,input);
ffloor(i,input);
lln(i,input);
llog(i,input);
ssh(i,input);
ssqrt(i,input);
ttan(i,input);
tth(i,input);
cctg(i,input);
aactg(i,input);
ccth(i,input);
}
return input;
}
bool ScrollBar::Set(int apagepos) {
int op = pagepos;
pagepos = apagepos;
if(pagepos > totalsize - pagesize) pagepos = totalsize - pagesize;
if(pagepos < 0) pagepos = 0;
int slsize = GetRange();
int mint = max(minthumb, style->thumbmin);
if(totalsize <= 0)
SetThumb(0, slsize);
else {
double thumbsize = slsize * pagesize / (double) totalsize;
double rest = slsize * pagesize - thumbsize * totalsize;
double ts, ps;
if(thumbsize >= slsize || thumbsize < 0) {
ts = slsize;
ps = 0;
}
else
if(thumbsize <= mint) {
ps = ((slsize - mint) * (double)pagepos + rest) / (double) (totalsize - pagesize);
ts = mint;
}
else {
ps = (slsize * (double)pagepos + rest) / (double) totalsize;
ts = thumbsize;
}
SetThumb(ffloor(ps), fceil(ts));
}
if(pagepos != op) {
Refresh();
WhenScroll();
return true;
}
return false;
}
void HSVtoRGB(double h, double s, double v, double& r, double& g, double& b)
{
if(s == 0)
{
r = g = b = v;
return;
}
double rem = fmod(h *= 6, 1);
double p = v * (1 - s);
double q = v * (1 - s * rem);
double t = v * (1 - s * (1 - rem));
switch(ffloor(h))
{
default: NEVER(); // invalid color!
case 6:
case 0: r = v; g = t; b = p; break;
case 1: r = q; g = v; b = p; break;
case 2: r = p; g = v; b = t; break;
case 3: r = p; g = q; b = v; break;
case 4: r = t; g = p; b = v; break;
case -1:
case 5: r = v; g = p; b = q; break;
}
}