/** 2D float Perlin periodic noise.
*/
float pnoise2( float x, float y, int px, int py )
{
int ix0, iy0, ix1, iy1;
float fx0, fy0, fx1, fy1;
float s, t, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
ix1 = (( ix0 + 1 ) % px) & 0xff; // Wrap to 0..px-1 and wrap to 0..255
iy1 = (( iy0 + 1 ) % py) & 0xff; // Wrap to 0..py-1 and wrap to 0..255
ix0 = ( ix0 % px ) & 0xff;
iy0 = ( iy0 % py ) & 0xff;
t = FADE( fy0 );
s = FADE( fx0 );
nx0 = grad2(perm[ix0 + perm[iy0]], fx0, fy0);
nx1 = grad2(perm[ix0 + perm[iy1]], fx0, fy1);
n0 = LERP( t, nx0, nx1 );
nx0 = grad2(perm[ix1 + perm[iy0]], fx1, fy0);
nx1 = grad2(perm[ix1 + perm[iy1]], fx1, fy1);
n1 = LERP(t, nx0, nx1);
return 0.507f * ( LERP( s, n0, n1 ) );
}
/** 2D float Perlin noise.
*/
float noise2( float x, float y )
{
int ix0, iy0, ix1, iy1;
float fx0, fy0, fx1, fy1;
float s, t, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
ix1 = (ix0 + 1) & 0xff; // Wrap to 0..255
iy1 = (iy0 + 1) & 0xff;
ix0 = ix0 & 0xff;
iy0 = iy0 & 0xff;
t = FADE( fy0 );
s = FADE( fx0 );
nx0 = noise_grad2(noise_perm[ix0 + noise_perm[iy0]], fx0, fy0);
nx1 = noise_grad2(noise_perm[ix0 + noise_perm[iy1]], fx0, fy1);
n0 = LERP( t, nx0, nx1 );
nx0 = noise_grad2(noise_perm[ix1 + noise_perm[iy0]], fx1, fy0);
nx1 = noise_grad2(noise_perm[ix1 + noise_perm[iy1]], fx1, fy1);
n1 = LERP(t, nx0, nx1);
return 0.507f * ( LERP( s, n0, n1 ) );
}
template <class T> T pnoise(T x,T y, int px, int py,const unsigned char *perm) {
int ix0, iy0, ix1, iy1;
T fx0, fy0, fx1, fy1;
T s, t, nx0, nx1, n0, n1;
px = max(px,1);
py = max(py,1);
ix0 = FASTFLOOR( x );
iy0 = FASTFLOOR( y );
fx0 = x - ix0;
fy0 = y - iy0;
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
ix1 = (( ix0 + 1 ) % px) & 0xff;
iy1 = (( iy0 + 1 ) % py) & 0xff;
ix0 = ( ix0 % px ) & 0xff;
iy0 = ( iy0 % py ) & 0xff;
t = FADE( fy0 );
s = FADE( fx0 );
nx0 = grad(perm[ix0 + perm[iy0]], fx0, fy0);
nx1 = grad(perm[ix0 + perm[iy1]], fx0, fy1);
n0 = LERP( t, nx0, nx1 );
nx0 = grad(perm[ix1 + perm[iy0]], fx1, fy0);
nx1 = grad(perm[ix1 + perm[iy1]], fx1, fy1);
n1 = LERP(t, nx0, nx1);
return 0.5f * (1.0f + 0.507f * ( LERP( s, n0, n1 ) ) );
}
static double noise3(int * p, double x, double y, double z)
{
int X = (int)FASTFLOOR(x) & 255, /* FIND UNIT CUBE THAT */
Y = (int)FASTFLOOR(y) & 255, /* CONTAINS POINT. */
Z = (int)FASTFLOOR(z) & 255;
double u, v, w;
int A = p[X ]+Y, AA = p[A]+Z, AB = p[A+1]+Z, /* HASH COORDINATES OF */
B = p[X+1]+Y, BA = p[B]+Z, BB = p[B+1]+Z; /* THE 8 CUBE CORNERS, */
x -= FASTFLOOR(x); /* FIND RELATIVE X,Y,Z */
y -= FASTFLOOR(y); /* OF POINT IN CUBE. */
z -= FASTFLOOR(z);
u = FADE(x); /* COMPUTE FADE CURVES */
v = FADE(y); /* FOR EACH OF X,Y,Z. */
w = FADE(z);
return LERP(w, LERP(v, LERP(u, GRAD(p[AA ], x , y , z ), /* AND ADD */
GRAD(p[BA ], x-1.0, y , z )), /* BLENDED */
LERP(u, GRAD(p[AB ], x , y-1.0, z ), /* RESULTS */
GRAD(p[BB ], x-1.0, y-1.0, z ))),/* FROM 8 */
LERP(v, LERP(u, GRAD(p[AA+1], x , y , z-1.0 ), /* CORNERS */
GRAD(p[BA+1], x-1.0, y , z-1.0 )), /* OF CUBE */
LERP(u, GRAD(p[AB+1], x , y-1.0, z-1.0 ),
GRAD(p[BB+1], x-1.0, y-1.0, z-1.0 ))));
}
void Palette::fadeColor(byte *rgb, byte toR, byte toG, byte toB) {
#define FADE(color, toColor) color += _fadeStep < toColor - color ? _fadeStep : (-_fadeStep <= toColor - color ? toColor - color : -_fadeStep)
FADE(rgb[0], toR);
FADE(rgb[1], toG);
FADE(rgb[2], toB);
#undef FADE
}
template <class T> T pnoise(T x,T y,T z,int px,int py,int pz,const unsigned char *perm) {
int ix0, iy0, ix1, iy1, iz0, iz1;
T fx0, fy0, fz0, fx1, fy1, fz1;
T s, t, r;
T nxy0, nxy1, nx0, nx1, n0, n1;
px = max(px,1);
py = max(py,1);
pz = max(pz,1);
ix0 = FASTFLOOR( x );
iy0 = FASTFLOOR( y );
iz0 = FASTFLOOR( z );
fx0 = x - ix0;
fy0 = y - iy0;
fz0 = z - iz0;
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
ix1 = (( ix0 + 1 ) % px ) & 0xff;
iy1 = (( iy0 + 1 ) % py ) & 0xff;
iz1 = (( iz0 + 1 ) % pz ) & 0xff;
ix0 = ( ix0 % px ) & 0xff;
iy0 = ( iy0 % py ) & 0xff;
iz0 = ( iz0 % pz ) & 0xff;
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxy0 = grad(perm[ix0 + perm[iy0 + perm[iz0]]], fx0, fy0, fz0);
nxy1 = grad(perm[ix0 + perm[iy0 + perm[iz1]]], fx0, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = grad(perm[ix0 + perm[iy1 + perm[iz0]]], fx0, fy1, fz0);
nxy1 = grad(perm[ix0 + perm[iy1 + perm[iz1]]], fx0, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxy0 = grad(perm[ix1 + perm[iy0 + perm[iz0]]], fx1, fy0, fz0);
nxy1 = grad(perm[ix1 + perm[iy0 + perm[iz1]]], fx1, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = grad(perm[ix1 + perm[iy1 + perm[iz0]]], fx1, fy1, fz0);
nxy1 = grad(perm[ix1 + perm[iy1 + perm[iz1]]], fx1, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.5f * (1.0f + 0.936f * ( LERP( s, n0, n1 ) ) );
}
/** 3D float Perlin periodic noise.
*/
float pnoise3( float x, float y, float z, int px, int py, int pz )
{
int ix0, iy0, ix1, iy1, iz0, iz1;
float fx0, fy0, fz0, fx1, fy1, fz1;
float s, t, r;
float nxy0, nxy1, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
iz0 = FASTFLOOR( z ); // Integer part of z
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fz0 = z - iz0; // Fractional part of z
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
ix1 = (( ix0 + 1 ) % px ) & 0xff; // Wrap to 0..px-1 and wrap to 0..255
iy1 = (( iy0 + 1 ) % py ) & 0xff; // Wrap to 0..py-1 and wrap to 0..255
iz1 = (( iz0 + 1 ) % pz ) & 0xff; // Wrap to 0..pz-1 and wrap to 0..255
ix0 = ( ix0 % px ) & 0xff;
iy0 = ( iy0 % py ) & 0xff;
iz0 = ( iz0 % pz ) & 0xff;
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxy0 = grad3(perm[ix0 + perm[iy0 + perm[iz0]]], fx0, fy0, fz0);
nxy1 = grad3(perm[ix0 + perm[iy0 + perm[iz1]]], fx0, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = grad3(perm[ix0 + perm[iy1 + perm[iz0]]], fx0, fy1, fz0);
nxy1 = grad3(perm[ix0 + perm[iy1 + perm[iz1]]], fx0, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxy0 = grad3(perm[ix1 + perm[iy0 + perm[iz0]]], fx1, fy0, fz0);
nxy1 = grad3(perm[ix1 + perm[iy0 + perm[iz1]]], fx1, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = grad3(perm[ix1 + perm[iy1 + perm[iz0]]], fx1, fy1, fz0);
nxy1 = grad3(perm[ix1 + perm[iy1 + perm[iz1]]], fx1, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.936f * ( LERP( s, n0, n1 ) );
}
/** 3D float Perlin noise.
*/
float noise3( float x, float y, float z )
{
int ix0, iy0, ix1, iy1, iz0, iz1;
float fx0, fy0, fz0, fx1, fy1, fz1;
float s, t, r;
float nxy0, nxy1, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
iz0 = FASTFLOOR( z ); // Integer part of z
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fz0 = z - iz0; // Fractional part of z
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
ix1 = ( ix0 + 1 ) & 0xff; // Wrap to 0..255
iy1 = ( iy0 + 1 ) & 0xff;
iz1 = ( iz0 + 1 ) & 0xff;
ix0 = ix0 & 0xff;
iy0 = iy0 & 0xff;
iz0 = iz0 & 0xff;
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxy0 = noise_grad3(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz0]]], fx0, fy0, fz0);
nxy1 = noise_grad3(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz1]]], fx0, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = noise_grad3(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz0]]], fx0, fy1, fz0);
nxy1 = noise_grad3(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz1]]], fx0, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxy0 = noise_grad3(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz0]]], fx1, fy0, fz0);
nxy1 = noise_grad3(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz1]]], fx1, fy0, fz1);
nx0 = LERP( r, nxy0, nxy1 );
nxy0 = noise_grad3(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz0]]], fx1, fy1, fz0);
nxy1 = noise_grad3(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz1]]], fx1, fy1, fz1);
nx1 = LERP( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.936f * ( LERP( s, n0, n1 ) );
}
template <class T> T noise(T x,const unsigned char *perm) {
int ix0, ix1;
T fx0, fx1;
T s, n0, n1;
ix0 = FASTFLOOR( x );
fx0 = x - ix0;
fx1 = fx0 - 1.0f;
ix1 = ( ix0+1 ) & 0xff;
ix0 = ix0 & 0xff;
s = FADE( fx0 );
n0 = grad( perm[ ix0 ], fx0 );
n1 = grad( perm[ ix1 ], fx1 );
return 0.5f * (1.0f + 0.188f * ( LERP( s, n0, n1 ) ));
}
/** 1D float Perlin periodic noise, SL "pnoise()"
*/
float pnoise1( float x, int px )
{
int ix0, ix1;
float fx0, fx1;
float s, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
fx0 = x - ix0; // Fractional part of x
fx1 = fx0 - 1.0f;
ix1 = (( ix0 + 1 ) % px) & 0xff; // Wrap to 0..px-1 *and* wrap to 0..255
ix0 = ( ix0 % px ) & 0xff; // (because px might be greater than 256)
s = FADE( fx0 );
n0 = grad1( perm[ ix0 ], fx0 );
n1 = grad1( perm[ ix1 ], fx1 );
return 0.188f * ( LERP( s, n0, n1 ) );
}
/** 1D float Perlin noise, SL "noise()"
*/
float noise1( float x )
{
int ix0, ix1;
float fx0, fx1;
float s, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
fx0 = x - ix0; // Fractional part of x
fx1 = fx0 - 1.0f;
ix1 = ( ix0+1 ) & 0xff;
ix0 = ix0 & 0xff; // Wrap to 0..255
s = FADE( fx0 );
n0 = grad1( perm[ ix0 ], fx0 );
n1 = grad1( perm[ ix1 ], fx1 );
return 0.188f * ( LERP( s, n0, n1 ) );
}
float pnoise4( float x, float y, float z, float w,
int px, int py, int pz, int pw )
{
int ix0, iy0, iz0, iw0, ix1, iy1, iz1, iw1;
float fx0, fy0, fz0, fw0, fx1, fy1, fz1, fw1;
float s, t, r, q;
float nxyz0, nxyz1, nxy0, nxy1, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
iz0 = FASTFLOOR( z ); // Integer part of y
iw0 = FASTFLOOR( w ); // Integer part of w
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fz0 = z - iz0; // Fractional part of z
fw0 = w - iw0; // Fractional part of w
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
fw1 = fw0 - 1.0f;
ix1 = (( ix0 + 1 ) % px ) & 0xff; // Wrap to 0..px-1 and wrap to 0..255
iy1 = (( iy0 + 1 ) % py ) & 0xff; // Wrap to 0..py-1 and wrap to 0..255
iz1 = (( iz0 + 1 ) % pz ) & 0xff; // Wrap to 0..pz-1 and wrap to 0..255
iw1 = (( iw0 + 1 ) % pw ) & 0xff; // Wrap to 0..pw-1 and wrap to 0..255
ix0 = ( ix0 % px ) & 0xff;
iy0 = ( iy0 % py ) & 0xff;
iz0 = ( iz0 % pz ) & 0xff;
iw0 = ( iw0 % pw ) & 0xff;
q = FADE( fw0 );
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxyz0 = grad4(perm[ix0 + perm[iy0 + perm[iz0 + perm[iw0]]]], fx0, fy0, fz0, fw0);
nxyz1 = grad4(perm[ix0 + perm[iy0 + perm[iz0 + perm[iw1]]]], fx0, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad4(perm[ix0 + perm[iy0 + perm[iz1 + perm[iw0]]]], fx0, fy0, fz1, fw0);
nxyz1 = grad4(perm[ix0 + perm[iy0 + perm[iz1 + perm[iw1]]]], fx0, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = grad4(perm[ix0 + perm[iy1 + perm[iz0 + perm[iw0]]]], fx0, fy1, fz0, fw0);
nxyz1 = grad4(perm[ix0 + perm[iy1 + perm[iz0 + perm[iw1]]]], fx0, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad4(perm[ix0 + perm[iy1 + perm[iz1 + perm[iw0]]]], fx0, fy1, fz1, fw0);
nxyz1 = grad4(perm[ix0 + perm[iy1 + perm[iz1 + perm[iw1]]]], fx0, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxyz0 = grad4(perm[ix1 + perm[iy0 + perm[iz0 + perm[iw0]]]], fx1, fy0, fz0, fw0);
nxyz1 = grad4(perm[ix1 + perm[iy0 + perm[iz0 + perm[iw1]]]], fx1, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad4(perm[ix1 + perm[iy0 + perm[iz1 + perm[iw0]]]], fx1, fy0, fz1, fw0);
nxyz1 = grad4(perm[ix1 + perm[iy0 + perm[iz1 + perm[iw1]]]], fx1, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = grad4(perm[ix1 + perm[iy1 + perm[iz0 + perm[iw0]]]], fx1, fy1, fz0, fw0);
nxyz1 = grad4(perm[ix1 + perm[iy1 + perm[iz0 + perm[iw1]]]], fx1, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad4(perm[ix1 + perm[iy1 + perm[iz1 + perm[iw0]]]], fx1, fy1, fz1, fw0);
nxyz1 = grad4(perm[ix1 + perm[iy1 + perm[iz1 + perm[iw1]]]], fx1, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.87f * ( LERP( s, n0, n1 ) );
}
uint8_t B = P(X+1)+Y; uint8_t BA = P(B) + Z; uint8_t BB = P(B+1)+Z; // Get the relative position of the point in the cube uint16_t u = x & 0xFFFF; uint16_t v = y & 0xFFFF; uint16_t w = z & 0xFFFF; // Get a signed version of the above for the grad function int16_t xx = (u >> 1) & 0x7FFF; int16_t yy = (v >> 1) & 0x7FFF; int16_t zz = (w >> 1) & 0x7FFF; uint16_t N = 0x8000L; u = FADE(u); v = FADE(v); w = FADE(w); // skip the log fade adjustment for the moment, otherwise here we would // adjust fade values for u,v,w int16_t X1 = LERP(grad16(P(AA), xx, yy, zz), grad16(P(BA), xx - N, yy, zz), u); int16_t X2 = LERP(grad16(P(AB), xx, yy-N, zz), grad16(P(BB), xx - N, yy - N, zz), u); int16_t X3 = LERP(grad16(P(AA+1), xx, yy, zz-N), grad16(P(BA+1), xx - N, yy, zz-N), u); int16_t X4 = LERP(grad16(P(AB+1), xx, yy-N, zz-N), grad16(P(BB+1), xx - N, yy - N, zz - N), u); int16_t Y1 = LERP(X1,X2,v); int16_t Y2 = LERP(X3,X4,v); int16_t ans = LERP(Y1,Y2,w); return ans;
float noise4( float x, float y, float z, float w )
{
int ix0, iy0, iz0, iw0, ix1, iy1, iz1, iw1;
float fx0, fy0, fz0, fw0, fx1, fy1, fz1, fw1;
float s, t, r, q;
float nxyz0, nxyz1, nxy0, nxy1, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x ); // Integer part of x
iy0 = FASTFLOOR( y ); // Integer part of y
iz0 = FASTFLOOR( z ); // Integer part of y
iw0 = FASTFLOOR( w ); // Integer part of w
fx0 = x - ix0; // Fractional part of x
fy0 = y - iy0; // Fractional part of y
fz0 = z - iz0; // Fractional part of z
fw0 = w - iw0; // Fractional part of w
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
fw1 = fw0 - 1.0f;
ix1 = ( ix0 + 1 ) & 0xff; // Wrap to 0..255
iy1 = ( iy0 + 1 ) & 0xff;
iz1 = ( iz0 + 1 ) & 0xff;
iw1 = ( iw0 + 1 ) & 0xff;
ix0 = ix0 & 0xff;
iy0 = iy0 & 0xff;
iz0 = iz0 & 0xff;
iw0 = iw0 & 0xff;
q = FADE( fw0 );
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxyz0 = noise_grad4(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz0 + noise_perm[iw0]]]], fx0, fy0, fz0, fw0);
nxyz1 = noise_grad4(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz0 + noise_perm[iw1]]]], fx0, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = noise_grad4(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz1 + noise_perm[iw0]]]], fx0, fy0, fz1, fw0);
nxyz1 = noise_grad4(noise_perm[ix0 + noise_perm[iy0 + noise_perm[iz1 + noise_perm[iw1]]]], fx0, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = noise_grad4(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz0 + noise_perm[iw0]]]], fx0, fy1, fz0, fw0);
nxyz1 = noise_grad4(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz0 + noise_perm[iw1]]]], fx0, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = noise_grad4(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz1 + noise_perm[iw0]]]], fx0, fy1, fz1, fw0);
nxyz1 = noise_grad4(noise_perm[ix0 + noise_perm[iy1 + noise_perm[iz1 + noise_perm[iw1]]]], fx0, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxyz0 = noise_grad4(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz0 + noise_perm[iw0]]]], fx1, fy0, fz0, fw0);
nxyz1 = noise_grad4(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz0 + noise_perm[iw1]]]], fx1, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = noise_grad4(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz1 + noise_perm[iw0]]]], fx1, fy0, fz1, fw0);
nxyz1 = noise_grad4(noise_perm[ix1 + noise_perm[iy0 + noise_perm[iz1 + noise_perm[iw1]]]], fx1, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = noise_grad4(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz0 + noise_perm[iw0]]]], fx1, fy1, fz0, fw0);
nxyz1 = noise_grad4(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz0 + noise_perm[iw1]]]], fx1, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = noise_grad4(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz1 + noise_perm[iw0]]]], fx1, fy1, fz1, fw0);
nxyz1 = noise_grad4(noise_perm[ix1 + noise_perm[iy1 + noise_perm[iz1 + noise_perm[iw1]]]], fx1, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.87f * ( LERP( s, n0, n1 ) );
}
template <class T> T noise(T x,T y,T z,T w,const unsigned char *perm) {
int ix0, iy0, iz0, iw0, ix1, iy1, iz1, iw1;
T fx0, fy0, fz0, fw0, fx1, fy1, fz1, fw1;
T s, t, r, q;
T nxyz0, nxyz1, nxy0, nxy1, nx0, nx1, n0, n1;
ix0 = FASTFLOOR( x );
iy0 = FASTFLOOR( y );
iz0 = FASTFLOOR( z );
iw0 = FASTFLOOR( w );
fx0 = x - ix0;
fy0 = y - iy0;
fz0 = z - iz0;
fw0 = w - iw0;
fx1 = fx0 - 1.0f;
fy1 = fy0 - 1.0f;
fz1 = fz0 - 1.0f;
fw1 = fw0 - 1.0f;
ix1 = ( ix0 + 1 ) & 0xff;
iy1 = ( iy0 + 1 ) & 0xff;
iz1 = ( iz0 + 1 ) & 0xff;
iw1 = ( iw0 + 1 ) & 0xff;
ix0 = ix0 & 0xff;
iy0 = iy0 & 0xff;
iz0 = iz0 & 0xff;
iw0 = iw0 & 0xff;
q = FADE( fw0 );
r = FADE( fz0 );
t = FADE( fy0 );
s = FADE( fx0 );
nxyz0 = grad(perm[ix0 + perm[iy0 + perm[iz0 + perm[iw0]]]], fx0, fy0, fz0, fw0);
nxyz1 = grad(perm[ix0 + perm[iy0 + perm[iz0 + perm[iw1]]]], fx0, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad(perm[ix0 + perm[iy0 + perm[iz1 + perm[iw0]]]], fx0, fy0, fz1, fw0);
nxyz1 = grad(perm[ix0 + perm[iy0 + perm[iz1 + perm[iw1]]]], fx0, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = grad(perm[ix0 + perm[iy1 + perm[iz0 + perm[iw0]]]], fx0, fy1, fz0, fw0);
nxyz1 = grad(perm[ix0 + perm[iy1 + perm[iz0 + perm[iw1]]]], fx0, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad(perm[ix0 + perm[iy1 + perm[iz1 + perm[iw0]]]], fx0, fy1, fz1, fw0);
nxyz1 = grad(perm[ix0 + perm[iy1 + perm[iz1 + perm[iw1]]]], fx0, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n0 = LERP( t, nx0, nx1 );
nxyz0 = grad(perm[ix1 + perm[iy0 + perm[iz0 + perm[iw0]]]], fx1, fy0, fz0, fw0);
nxyz1 = grad(perm[ix1 + perm[iy0 + perm[iz0 + perm[iw1]]]], fx1, fy0, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad(perm[ix1 + perm[iy0 + perm[iz1 + perm[iw0]]]], fx1, fy0, fz1, fw0);
nxyz1 = grad(perm[ix1 + perm[iy0 + perm[iz1 + perm[iw1]]]], fx1, fy0, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx0 = LERP ( r, nxy0, nxy1 );
nxyz0 = grad(perm[ix1 + perm[iy1 + perm[iz0 + perm[iw0]]]], fx1, fy1, fz0, fw0);
nxyz1 = grad(perm[ix1 + perm[iy1 + perm[iz0 + perm[iw1]]]], fx1, fy1, fz0, fw1);
nxy0 = LERP( q, nxyz0, nxyz1 );
nxyz0 = grad(perm[ix1 + perm[iy1 + perm[iz1 + perm[iw0]]]], fx1, fy1, fz1, fw0);
nxyz1 = grad(perm[ix1 + perm[iy1 + perm[iz1 + perm[iw1]]]], fx1, fy1, fz1, fw1);
nxy1 = LERP( q, nxyz0, nxyz1 );
nx1 = LERP ( r, nxy0, nxy1 );
n1 = LERP( t, nx0, nx1 );
return 0.5f * (1.0f + 0.87f * ( LERP( s, n0, n1 ) ) );
}
void play_intro(void)
{
#define COL(index,red,green,blue) \
if ((index>=min) && (index<=max)) { \
pal[index].r = (red); \
pal[index].g = (green); \
pal[index].b = (blue); \
}
#define FADE(speed) \
fade_from(source, pal, speed); \
get_palette(source)
#define NORMAL() \
min = 0; \
max = PAL_SIZE-1
BITMAP *bg = (BITMAP *)datafile[MYLOGO_BMP].dat;
PALETTE source, pal;
int n, n2;
int min, max;
/* play the introduction theme */
qtetris_music(MUSIC_INTRO, FALSE);
n = 0;
NORMAL();
set_palette(black_palette);
get_palette(source);
get_palette(pal);
/* DAC *********************************/
clear(virtual);
blit(bg, virtual, 0, 0,
QTETRIS_SCREEN_W/2 - bg->w/2,
QTETRIS_SCREEN_H/2 - bg->h/2, bg->w, bg->h);
qtetris_blit(virtual);
FADE(1);
/* David A. Capello */
/* fg */
min = 1;
max = 28;
for (n2=0, n=min; n<=max+2; n2=n, n+=2) {
COL(n2, 0, 0, 0);
COL(n, 32, 32, 63);
COL(n+1, 63, 63, 63);
FADE(32);
}
/* bg */
min = 32;
max = 45;
for (n=max; n>=min-4; n--) {
NORMAL();
for (n2=1; n2<=28; n2+=2) {
COL(n2+1, 63-(-63*(n-45)/(45-32+4)),
63-(-63*(n-45)/(45-32+4)),
63-(-63*(n-45)/(45-32+4)));
COL(n2, -63*(n-45)/(45-32+4), 0, 0);
}
min = 32;
max = 45;
COL(n+4, 63, 63, 63);
COL(n+2, 63, 0, 0);
COL(n, 63, 63, 0);
FADE(64);
}
/* Present */
NORMAL();
COL(253, 63, 63, 63);
COL(254, 32, 32, 32);
COL(255, 16, 16, 16);
FADE(4);
/* fin de la primer etapa **************/
fade_out(2);
/* QUEEN LOGO **************************/
fade_out(2);
clear(virtual);
blit(datafile[QUEENLOG_BMP].dat, virtual, 0, 0,
QTETRIS_SCREEN_W/2-((BITMAP *)datafile[QUEENLOG_BMP].dat)->w/2,
QTETRIS_SCREEN_H/2-((BITMAP *)datafile[QUEENLOG_BMP].dat)->h/2,
((BITMAP *)datafile[QUEENLOG_BMP].dat)->w,
((BITMAP *)datafile[QUEENLOG_BMP].dat)->h);
qtetris_blit(virtual);
fade_in(datafile[PALETTE_BMP].dat, 1);
get_palette(pal);
get_palette(source);
FADE(2);
fade_out(2);
/* TETRIS ******************************/
set_palette(black_palette);
get_palette(source);
get_palette(pal);
NORMAL();
for (n=0; n<PAL_SIZE; n++) {
COL(n, 63, 63, 63);
}
FADE(2);
/* mainscreen */
clear(virtual);
drawing_mode(DRAW_MODE_COPY_PATTERN, datafile[TETRISBG_BMP].dat, 0, 0);
rectfill(virtual, 0, 0, QTETRIS_SCREEN_W, QTETRIS_SCREEN_H, -1);
color_map = shadow_map;
drawing_mode(DRAW_MODE_TRANS, NULL, 0, 0);
draw_trans_sprite(virtual, datafile[TETRIS_BMP].dat,
QTETRIS_SCREEN_W/2 - ((BITMAP *)datafile[TETRIS_BMP].dat)->w/2 + 6,
QTETRIS_SCREEN_H/2 - ((BITMAP *)datafile[TETRIS_BMP].dat)->h/2 + 12);
solid_mode();
draw_sprite(virtual, datafile[TETRIS_BMP].dat,
QTETRIS_SCREEN_W/2 - ((BITMAP *)datafile[TETRIS_BMP].dat)->w/2,
QTETRIS_SCREEN_H/2 - ((BITMAP *)datafile[TETRIS_BMP].dat)->h/2);
qtetris_blit(virtual);
for (n=15; n<112; n++) {
COL(n, 0, 0, 0);
}
FADE(2);
FADE(2);
fade_from(pal, datafile[PALETTE_BMP].dat, 2);
}
