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polished texture loading a bit; fixed PNG colors; added some help

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Zeno Rogue 2018-01-03 01:58:44 +01:00
parent 6745867dd2
commit e0d4932c7a
1 changed files with 27 additions and 3 deletions
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30
textures.cpp
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@ -169,6 +169,9 @@ bool readtexture() {
png_read_image(png, &row_pointers[0]);
fclose(f);
for(int i=0; i<ty*tx; i++)
swap(part(origpixels[i], 0), part(origpixels[i], 2));
auto pix = [&] (int x, int y) {
if(x<0 || y<0 || x >= tx || y >= ty) return 0;
return origpixels[y*tx + x];
@ -837,7 +840,20 @@ void showMagicMenu() {
popScreen();
};
}
string texturehelp =
"This mode lets you to change the floor tesselation easily -- "
"select 'paint a new texture' and draw like in a Paint program. "
"The obtained pattern can then be easily changed to another geometry, "
"or saved.\n\n"
"Instead of drawing, it is also possible to use an arbitrary image "
"as a texture. "
"Works best with spherical/Euclidean/hyperbolic tesselations "
"(e.g., a photo of a soccerball, or one of the tesselations by M. C. "
"Escher), but it can be also used on arbitrary photos to make them periodic "
"(these probably work best with the 'large picture' setting in geometry selection). "
"Again, tesselations can have their geometry changed.\n\n";
void showMenu() {
cmode = sm::SIDE | sm::MAYDARK | sm::DIALOG_STRICT_X;
gamescreen(0);
@ -1010,6 +1026,8 @@ void showMenu() {
saveRawTexture();
else if(uni == 'S' && tstate == tsActive)
saveFullTexture();
else if(uni == SDLK_F1)
gotoHelp(texturehelp);
else if(doexiton(sym, uni))
popScreen();
};
@ -1154,9 +1172,8 @@ void drawPixel(cell *c, hyperpoint h, int col) {
}
void remap(eTextureState old_tstate, eTextureState old_tstate_max) {
if(!patterns::compatible(texture::cgroup, patterns::cgroup)) return;
texture_map.clear();
if(tstate_max == tsActive) {
if(old_tstate == tsActive && patterns::compatible(texture::cgroup, patterns::cgroup)) {
tstate = old_tstate;
tstate_max = old_tstate_max;
@ -1197,6 +1214,13 @@ void remap(eTextureState old_tstate, eTextureState old_tstate_max) {
}
}
}
else if(old_tstate >= tsAdjusting) {
printf("perform_mapping %d/%d\n", tstate, tstate_max);
calcparam();
drawthemap();
perform_mapping();
printf("texture_map size = %d\n", size(texture_map));
}
}
int textureArgs() {