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hyperrogue/textures.cpp
2017-12-09 20:01:50 +01:00

270 lines
6.6 KiB
C++

#include <SDL/SDL_image.h>
glfont_t textures;
SDL_Surface *convertSurface(SDL_Surface* s) {
SDL_PixelFormat fmt;
// fmt.format = SDL_PIXELFORMAT_BGRA8888;
fmt.BitsPerPixel = 32;
fmt.BytesPerPixel = 4;
fmt.Ashift=24;
fmt.Rshift=16;
fmt.Gshift=8;
fmt.Bshift=0;
fmt.Amask=0xff<<24;
fmt.Rmask=0xff<<16;
fmt.Gmask=0xff<<8;
fmt.Bmask=0xff;
fmt.Aloss = fmt.Rloss = fmt.Gloss = fmt.Bloss = 0;
fmt.palette = NULL;
#ifndef SDL2
fmt.alpha = 0;
fmt.colorkey = 0x1ffffff;
#endif
return SDL_ConvertSurface(s, &fmt, SDL_SWSURFACE);
}
bool texture_read = false;
vector<int> expanded_data;
string texturename;
void sdltogl_bmp(SDL_Surface *txt, glfont_t& f, int ch) {
int dim = min(txt->w, txt->h);
int otwidth = dim;
int otheight = dim;
int twidth = next_p2( otwidth );
int theight = next_p2( otheight );
expanded_data.resize(twidth * theight);
for(int j=0; j <theight;j++) for(int i=0; i < twidth; i++) {
expanded_data[(i+j*twidth)] = qpixel(txt, i, j);
}
f.widths[ch] = otwidth;
f.heights[ch] = otheight;
glBindTexture( GL_TEXTURE_2D, f.textures[ch]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, twidth, theight, 0,
GL_BGRA, GL_UNSIGNED_BYTE,
&expanded_data[0] );
float x=(float)otwidth / (float)twidth;
float y=(float)otheight / (float)theight;
f.tx[ch] = x;
f.ty[ch] = y;
}
void readtexture() {
texture_read = true;
glfont_t& f = textures;
int NUMPICS = 2;
f.textures = new GLuint[NUMPICS];
glGenTextures( NUMPICS, f.textures );
if(0) for(int i=0; i<NUMPICS; i++)
printf("pic %d = %d\n", i, f.textures[i]);
for(int ch=1; ch<NUMPICS; ch++) {
SDL_Surface *txt = IMG_Load(texturename.c_str());
auto txt2 = convertSurface(txt);
sdltogl_bmp(txt2, f, ch);
SDL_FreeSurface(txt);
SDL_FreeSurface(txt2);
}
//printf("init size=%d ok\n", size);
// GLERR("initfont");
}
ld iscale = 1;
ld irotate = 0;
unsigned int glc = 0xFFFFFFDD;
void mapTextureTriangle(textureinfo &mi, array<hyperpoint, 3> v) {
int tabid = 1;
glfont_t& f(textures);
float fx=f.tx[tabid];
float fy=f.ty[tabid];
for(int i=0; i<3; i++) {
for(int j=0; j<3; j++)
mi.vertices.push_back(v[i][j]);
hyperpoint inmodel;
applymodel(mi.M * v[i], inmodel);
inmodel = spin(M_PI * irotate / 180) * inmodel;
mi.tvertices.push_back(fx * (iscale * inmodel[0]+1)/2);
mi.tvertices.push_back(fy * (iscale * inmodel[1]+1)/2);
mi.tvertices.push_back(0);
}
}
map<int, textureinfo> texture_map;
bool applyTextureMap(cell *c, const transmatrix &V, int col) {
using namespace patterns;
auto si = getpatterninfo0(c);
try {
auto& mi = texture_map.at(si.id);
qfi.spin = applyPatterndir(c, si);
int n = mi.vertices.size() / 3;
qfi.special = false;
qfi.shape = &shFullFloor[ctof(c)];
qfi.tinf = &mi;
if(chasmg == 2) return false;
else if(chasmg && wmspatial) {
if(detaillevel == 0) return false;
queuetable(V * qfi.spin, &mi.vertices[0], n, 0, c->land == laCocytus ? 0x080808FF : 0x101010FF, PPR_LAKEBOTTOM);
}
else {
queuetable(V * qfi.spin, &mi.vertices[0], n, 0, col, PPR_FLOOR);
}
lastptd().u.poly.tinf = &mi;
return true;
}
catch(out_of_range) {
return false;
}
}
void perform_mapping() {
using namespace patterns;
if(!texture_read) readtexture();
texture_map.clear();
glfont_t& f(textures); int tabid = 1;
for(auto p: gmatrix) {
cell *c = p.first;
auto si = getpatterninfo0(c);
bool replace = false;
int sgn = sphere ? -1 : 1;
if(!texture_map.count(si.id))
replace = true;
else if(sgn * p.second[2][2] < sgn * texture_map[si.id].M[2][2])
replace = true;
if(replace) {
auto& mi = texture_map[si.id];
mi.M = p.second;
mi.vertices.clear();
mi.tvertices.clear();
mi.M = mi.M * applyPatterndir(c, si);
ld z = ctof(c) ? rhexf : hexvdist;
ld base = ctof(c) ? 0 : 0; // -hexshift;
if(!ctof(c) || nontruncated) base -= M_PI / c->type;
for(int i=0; i<c->type; i++) {
hyperpoint h1 = spin(base + M_PI * (2*i) / c->type) * xpush(z) * C0;
hyperpoint h2 = spin(base + M_PI * (2*i+2) / c->type) * xpush(z) * C0;
mapTextureTriangle(mi, {C0, h1, h2});
}
mi.texture_id = f.textures[tabid];
}
}
}
bool forge_handleKey(int sym, int uni) {
if(sym == SDLK_F4) {
glc += 0x11;
return true;
}
if(sym == SDLK_F5) {
glc -= 0x11;
return true;
}
return false;
}
int forgeArgs() {
using namespace arg;
if(0) ;
else if(argis("-forge")) {
shift(); texturename = args();
}
else return 1;
return 0;
}
auto texture_hook =
addHook(hooks_args, 100, forgeArgs)
+ addHook(hooks_handleKey, 100, forge_handleKey);
bool texture_on = false;
void showTextureMenu() {
cmode = sm::SIDE | sm::MAYDARK;
gamescreen(0);
dialog::init(XLAT("texture mode"));
dialog::addSelItem(XLAT("select the texture's pattern"), XLAT("..."), 'r');
dialog::addSelItem(XLAT("texture file"), texturename, 'f');
dialog::addBoolItem(XLAT("texture mode enabled"), texture_on, 'm');
if(texture_on) {
dialog::addSelItem(XLAT("texture scale"), fts(iscale), 's');
dialog::addSelItem(XLAT("texture rotation"), fts(irotate), 'p');
}
dialog::addItem(XLAT("help"), SDLK_F1);
dialog::addItem(XLAT("back"), '0');
dialog::display();
keyhandler = [] (int sym, int uni) {
dialog::handleNavigation(sym, uni);
if(uni == 'r')
pushScreen(patterns::showPattern);
else if(uni == 'f')
dialog::openFileDialog(texturename, XLAT("texture to load:"), ".png");
else if(uni == 'm') {
texture_on = !texture_on;
if(texture_on) perform_mapping();
else texture_map.clear();
}
else if(uni == 's') {
dialog::editNumber(iscale, 0, 2, .01, 1, XLAT("texture scale"),
XLAT("Texture scale."));
dialog::reaction = perform_mapping;
}
else if(uni == 'p') {
dialog::editNumber(irotate, -360, 360, 15, 0, XLAT("texture rotation"),
XLAT("Texture rotation."));
dialog::reaction = perform_mapping;
}
else if(doexiton(sym, uni))
popScreen();
};
}