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https://github.com/xomboverlord/ldc.git
synced 2026-02-03 05:23:14 +01:00
[svn r45] Added a modified version of scrapple.qd (by downs) to the demos dir. It doesn't compile yet though :(
This commit is contained in:
Tomas Lindquist Olsen
316
demos/qd.d
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316
demos/qd.d
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// modified version of scrapple.qd to work with llvmdc
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import std.stdio;
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//version(none)
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void main() {
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screen(640, 480);
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pset(10, 10);
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line(0, 0, 100, 100, Box, Back(Red~Black));
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for (int i=0; i<=100; i+=10) {
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line(i, 0, 100-i, 100);
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line(0, i, 100, 100-i);
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}
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circle(100, 100, 50, 15, White~Black, Fill=White~Black);
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paint(200, 200, Red, Back=White);
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circle(100, 100, 50, 15, White);
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paint(200, 200, Black);
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pset(10, 11); pset(10, 11, Black);
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pset(10, 10);
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SDL_Delay(5000);
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}
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extern(C) {
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struct SDL_Rect {
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short x, y;
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ushort w, h;
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}
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struct SDL_PixelFormat {
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//SDL_Palette *palette;
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void *palette;
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ubyte BitsPerPixel, BytesPerPixel, Rloss, Gloss, Bloss, Aloss, Rshift, Gshift, Bshift, Ashift;
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uint Rmask, Gmask, Bmask, Amask, colorkey; ubyte alpha;
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}
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struct SDL_Surface {
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uint flags;
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SDL_PixelFormat *format;
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int w, h;
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ushort pitch;
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void *pixels;
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int offset;
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void *hwdata;
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SDL_Rect clip_rect;
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uint unused;
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uint locked;
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void *map;
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uint format_version;
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int refcount;
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}
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uint SDL_MapRGBA(SDL_PixelFormat *format, ubyte r, ubyte g, ubyte b, ubyte a);
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void SDL_GetRGBA(uint pixel, SDL_PixelFormat *fmt, ubyte *r, ubyte *g, ubyte *b, ubyte *a);
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int SDL_LockSurface(SDL_Surface *);
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void SDL_UnlockSurface(SDL_Surface *);
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SDL_Surface * SDL_SetVideoMode(int width, int height, int bpp, uint flags);
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int SDL_Flip(SDL_Surface *);
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void SDL_Delay(uint);
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const uint SDL_SWSURFACE=0;
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const uint SDL_HWSURFACE=1;
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const uint SDL_DOUBLEBUF=0x40000000;
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const uint SDL_FULLSCREEN=0x80000000;
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}
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SDL_Surface *display;
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void putpixel32(SDL_Surface *surf, int x, int y, ubyte[4] col) {
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uint *bufp = cast(uint *)surf.pixels + y*surf.pitch/4 + x;
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*bufp = SDL_MapRGBA(surf.format, col[0], col[1], col[2], col[3]);
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}
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void getpixel32(SDL_Surface *surf, int x, int y, ubyte[4] *col) {
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uint *bufp = cast(uint *)surf.pixels + y*surf.pitch/4 + x;
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SDL_GetRGBA(*bufp, surf.format, &(*col)[0], &(*col)[1], &(*col)[2], &(*col)[3]);
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}
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struct rgb {
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ubyte[3] values;
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rgb opCat(rgb other) {
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rgb res;
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foreach (id, ref v; res.values) v=(values[id]+other.values[id])/2;
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return res;
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}
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bool opEquals(rgb r) {
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return values == r.values;
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}
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}
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void putpixel(SDL_Surface *surf, int x, int y, rgb c) {
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if ( (x<0) || (y<0) || (x!<surf.w) || (y!<surf.h) ) return;
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putpixel32(surf, x, y, [c.values[0], c.values[1], c.values[2], 0]);
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}
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const rgb White={[255, 255, 255]};
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const rgb Black={[0, 0, 0]};
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const rgb Red={[255, 0, 0]};
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const rgb Green={[0, 255, 0]};
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const rgb Blue={[0, 0, 255]};
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rgb color=White;
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rgb back=Black;
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template failfind(U, T...) {
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static if (T.length)
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static if (is(T[0] == U)) static assert(false, "Duplicate "~U.stringof~" found!");
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else const bool failfind=failfind!(U, T[1..$]);
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else
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const bool failfind=true;
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}
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template select(U, T...) {
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static if(T.length)
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static if (is(U == T[0])) { static if (failfind!(U, T[1..$])) { }; const int select = 0; }
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else
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static if (select!(U, T[1..$]) != -1)
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const int select = 1 + select!(U, T[1..$]);
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else
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const int select = -1;
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else
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const int select = -1;
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}
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typedef rgb back_rgb;
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back_rgb Back(rgb r) { return cast(back_rgb) r; }
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back_rgb Back() { return cast(back_rgb) back; }
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typedef rgb box_rgb;
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box_rgb Box(rgb r) { return cast(box_rgb) r; }
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box_rgb Box() { return cast(box_rgb) color; }
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alias Back Fill;
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void execParams(T...)(T params) {
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const int col=select!(rgb, T);
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static if (col != -1) color=params[col];
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const int bcol=select!(back_rgb, T);
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static if (bcol != -1) back=cast(rgb) params[bcol];
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const int boxcol=select!(box_rgb, T);
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static if (boxcol != -1) color=cast(rgb) params[boxcol];
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}
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void pset(T...)(int x, int y, T params) {
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SDL_LockSurface(display);
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scope(exit) { SDL_UnlockSurface(display); SDL_Flip(display); }
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execParams(params);
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putpixel(display, x, y, color);
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}
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rgb pget(int x, int y) {
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SDL_LockSurface(display);
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scope(exit) SDL_UnlockSurface(display);
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ubyte[4] c;
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getpixel32(display, x, y, &c);
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rgb res; res.values[]=c[0..3]; return res;
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}
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void swap(T)(ref T a, ref T b) { T c=a; a=b; b=c; }
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T abs(T)(T f) { return f < 0 ? -f : f; }
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void bresenham(bool countUp=true, bool steep=false)(int x0, int y0, int x1, int y1) {
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auto deltax = x1 - x0, deltay = y1 - y0;
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static if (steep) {
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auto Δerror = cast(float)deltax / cast(float)deltay;
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auto var2 = x0;
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const string name="y";
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} else {
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auto Δerror = cast(float)deltay / cast(float)deltax;
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auto var2 = y0;
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const string name="x";
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}
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auto error = 0f;
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for (auto var1 = mixin(name~'0'); var1 <= mixin(name~'1'); ++var1) {
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static if (steep) putpixel(display, var2, var1, color);
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else putpixel(display, var1, var2, color);
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error += Δerror;
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if (abs(error) >= 1f) { static if (countUp) { var2++; error -= 1f; } else { var2--; error += 1f; }}
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}
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}
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T max(T)(T a, T b) { return a>b?a:b; }
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T min(T)(T a, T b) { return a<b?a:b; }
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void line(T...)(int x0, int y0, int x1, int y1, T p) {
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execParams(p);
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static if (select!(back_rgb, T)!=-1) {
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SDL_LockSurface(display);
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scope(exit) { SDL_UnlockSurface(display); SDL_Flip(display); }
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auto xend=max(x0, x1);
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for (int x=min(x0, x1); x<=xend; ++x) {
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auto yend=max(y0, y1);
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for (int y=min(y0, y1); y<=yend; ++y) {
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putpixel(display, x, y, back);
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}
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}
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}
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static if (select!(box_rgb, T)!=-1) {
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line(x0, y0, x1, y0);
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line(x1, y0, x1, y1);
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line(x1, y1, x0, y1);
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line(x0, y1, x0, y0);
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}
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static if (select!(box_rgb, T)+select!(back_rgb, T)==-2) {
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SDL_LockSurface(display);
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scope(exit) { SDL_UnlockSurface(display); SDL_Flip(display); }
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bool steep = abs(y1 - y0) > abs(x1 - x0);
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void turn() { swap(x0, x1); swap(y0, y1); }
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if (steep) { if (y1 < y0) turn; }
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else { if (x1 < x0) turn; }
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bool stepUp=steep ? (x0 < x1) : (y0 < y1);
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if (steep) {
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if (stepUp) bresenham!(true, true)(x0, y0, x1, y1);
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else bresenham!(false, true)(x0, y0, x1, y1);
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} else {
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if (stepUp) bresenham!(true, false)(x0, y0, x1, y1);
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else bresenham!(false, false)(x0, y0, x1, y1);
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}
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}
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}
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import llvm.intrinsic;
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alias llvm_sqrt sqrt;
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template circle_bresenham_pass(bool first) {
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const string xy=(first?"x":"y");
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const string yx=(first?"y":"x");
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const string str="
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auto x="~(first?"xradius":"0")~";
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auto y="~(first?"0":"yradius")~";
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auto xchange=yradius*yradius*"~(first?"(1-2*xradius)":"1")~";
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auto ychange=xradius*xradius*"~(first?"1":"(1-2*yradius)")~";
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auto error=0;
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auto stopx="~(first?"y2square*xradius":"0")~";
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auto stopy="~(first?"0":"x2square*yradius")~";
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while (stopx"~(first?">=":"<=")~"stopy) {
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putpixel(display, cx+x, cy+y, color);
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putpixel(display, cx+x, cy-y, color);
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putpixel(display, cx-x, cy+y, color);
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putpixel(display, cx-x, cy-y, color);
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"~yx~"++;
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stop"~yx~"+="~xy~"2square;
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error+="~yx~"change;
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"~yx~"change+="~xy~"2square;
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if ((2*error+"~xy~"change)>0) {
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--"~xy~";
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stop"~xy~"-="~yx~"2square;
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error+="~xy~"change;
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"~xy~"change+="~yx~"2square;
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}
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}
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";
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}
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void circle(T...)(int cx, int cy, int xradius, T t) {
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SDL_LockSurface(display);
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scope(exit) { SDL_UnlockSurface(display); SDL_Flip(display); }
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execParams(t);
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auto yradius=xradius;
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static if (T.length && is(T[0]: int)) yradius=t[0];
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static if (select!(back_rgb, T) != -1) {
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auto ratio=xradius*1f/yradius;
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for (int i=0; i<=yradius; ++i) {
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ushort j=cast(ushort)(sqrt(cast(real)(yradius*yradius-i*i))*ratio);
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for (int lx=cx-j; lx<=cx+j; ++lx) putpixel(display, lx, cy+i, back);
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for (int lx=cx-j; lx<=cx+j; ++lx) putpixel(display, lx, cy-i, back);
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}
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}
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auto x2square=2*xradius*xradius;
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auto y2square=2*yradius*yradius;
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{ mixin(circle_bresenham_pass!(true).str); }
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{ mixin(circle_bresenham_pass!(false).str); }
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}
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struct floodfill_node {
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int x, y;
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static floodfill_node opCall(int x, int y) {
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floodfill_node res;
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res.x=x; res.y=y;
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return res;
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}
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}
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void paint(T...)(int x, int y, T t) {
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SDL_LockSurface(display);
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scope(exit) { SDL_UnlockSurface(display); SDL_Flip(display); }
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execParams(t);
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bool border=true;
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if (select!(back_rgb, T) == -1) {
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back=pget(x, y);
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border=false;
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}
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bool check(rgb r) {
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if (border) return (r != back) && (r != color);
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else return r == back;
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}
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if (back == color) throw new Exception("Having identical backgrounds and foregrounds will severely mess up floodfill.");
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alias floodfill_node node;
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node[] queue;
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queue ~= node(x, y);
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size_t count=0;
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while (count<queue.length) {
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scope(exit) count++;
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with (queue[count]) {
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if (check(pget(x, y))) {
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int w=x, e=x;
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if (w<display.w) do w++; while ((w<display.w) && check(pget(w, y)));
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if (e>=0) do e--; while (e>=0 && check(pget(e, y)));
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//SDL_Flip(display);
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for (int i=e+1; i<w; ++i) {
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putpixel(display, i, y, color);
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if (y && check(pget(i, y-1)) && ((i==w-1)||!check(pget(i+1, y-1)))) queue ~= node(i, y-1);
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if ((y < display.h-1) && check(pget(i, y+1)) && ((i==w-1)||!check(pget(i+1, y+1)))) queue ~= node(i, y+1);
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}
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}
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}
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}
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}
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void screen(size_t w, size_t h) {
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display = SDL_SetVideoMode(w, h, 32, SDL_SWSURFACE);
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}
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void cls() { line(0, 0, display.w-1, display.h-1, Fill=Black); }
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