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rogueviz:: rainbow color specification

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This commit is contained in:
Zeno Rogue 2019-04-23 12:03:29 +02:00
parent c40d7753d0
commit 4bc4f80bfc
1 changed files with 54 additions and 49 deletions
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103
rogueviz.cpp
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@ -65,58 +65,48 @@ edgetype *add_edgetype(const string& name) {
return &*e;
}
colorpair parse(const string& s) {
colorpair cp;
cp.shade = 0; cp.color2 = 0;
sscanf(s.c_str(), "%x:%c%x", &cp.color1, &cp.shade, &cp.color2);
return cp;
map<color_t, array<color_t, 16> > next_hue;
color_t parse1(const string& s) {
// color can be given as RRGGBB
// or as 'Rmax,min,alpha,step,start', for rainbow Collatz
if(s[0] == 'R') {
int mh = 192, minh = 0, alpha = 255, step = 50, start = 0;
sscanf(s.c_str(), "R%x,%x,%x,%d,%d", &mh, &minh, &alpha, &step, &start);
vector<color_t> hues;
color_t difh = mh - minh;
color_t base = alpha + minh * 0x1010100;
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x1000000*mh + 0x10000 * y);
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x1010000*mh - 0x1000000 * y);
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x0010000*mh + 0x100 * y);
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x0010100*mh - 0x10000 * y);
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x0000100*mh + 0x1000000 * y);
for(unsigned y=0; y<difh; y++)
hues.push_back(base + 0x1000100*mh - 0x100 * y);
for(int t=0; t<isize(hues); t++)
for(int a=0; a<16; a++)
next_hue[hues[t]][a] = hues[gmod(t + rand() % step - rand() % step, isize(hues))];
return hues[gmod(start, isize(hues))];
}
else {
color_t res;
sscanf(s.c_str(), "%x", &res);
return res;
}
}
int nh = 0;
color_t hues[256*6];
void buildhue() {
color_t mh = 193;
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x1000000*mh + (unsigned) 0x10000 * y);
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x1010000*mh - 0x1000000 * y);
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x0010000*mh + 0x100 * y);
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x0010100*mh - 0x10000 * y);
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x0000100*mh + 0x1000000 * y);
for(unsigned y=0; y<=mh; y++)
hues[nh++] = (int) (0xFF + 0x1000100*mh - 0x100 * y);
}
color_t perturb(color_t c) {
if(nh == 0) buildhue();
int hueid = -1;
for(int t=0; t<nh; t++) if(hues[t] == c) hueid = t;
if(hueid == -1) return c;
hueid += rand() % 50;
hueid -= rand() % 50;
if(hueid<0) hueid += nh;
hueid %= nh;
return hues[hueid];
/*
int part[4];
for(int u=0; u<=3; u++) {
part[u] = (c >> (8*u)) & 0xFF;
}
int
if(part[1] == 255 && part[2] == 0)
int k =
k += rand() % 16;
k -= rand() % 16;
if(k<0) k=-k;
if(k>255) k = 255-(k-255);
c &=~ (0xFF << (8*u));
c |= k << (8*u);
} */
return c;
if(!next_hue.count(c)) return c;
return next_hue[c][rand() % 16];
}
colorpair perturb(colorpair cp) {
@ -125,6 +115,21 @@ colorpair perturb(colorpair cp) {
return cp;
}
colorpair parse(const string& s) {
colorpair cp;
auto pos = s.find(":");
if(pos != string::npos) {
cp.color1 = parse1(s.substr(0, pos));
cp.shade = s[pos+1];
cp.color2 = parse1(s.substr(pos+2));
}
else {
cp.shade = 0; cp.color2 = 0;
cp.color1 = parse1(s);
}
return cp;
}
vector<vertexdata> vdata;
transmatrix cspin(int i, int ch) {
@ -293,7 +298,7 @@ namespace collatz {
vertexdata& vd = vdata[0];
createViz(0, cwt.at, xpush(cshift));
virtualRebase(vd.m, true);
vd.cp = perturb(dftcolor);
vd.cp = dftcolor;
vd.data = 0;
addedge(0, 0, 1, false, collatz::collatz1);
vd.name = "1";