float calcNoise(vec3 uvw) {
float baseScale = 1.0;
float n = 0.0;
n += snoise(uvw * baseScale);
n += 0.5 * snoise(uvw * baseScale*2.0);
//n += 0.25 * snoise(uvw * baseScale*4.0);
//n += 0.125 * snoise(uvw * baseScale*8.0);
/*
n += 0.0625 * snoise(uvw * baseScale*16.0);
n += 0.03125 * snoise(uvw * baseScale*32.0);
n += 0.015625 * snoise(uvw * baseScale*64.0);
n += 0.0078125 * snoise(uvw * baseScale*128.0);
*/
//n = (n + 1.0)/2.0;
//n = clamp(n*1.3,0.0,1.0);
//n = pow(n,4.0);
return n;
}
void main(void) {
mat3 matColor = mat3(colorR, colorG, colorB);
vec3 uv = v_texCoord3D * 50.0;
float w = 1.0;
float h = 1.0;
float r = mul.r * zero_one(snoise(vec3(uv.x * w * freqR.x, uv.y * h * freqR.y, speed.r * time)) + add.r);
float g = mul.g * zero_one(snoise(vec3(uv.x * w * freqG.x, uv.y * h * freqG.y, speed.g * time)) + add.g);
float b = mul.b * zero_one(snoise(vec3(uv.x * w * freqB.x, uv.y * h * freqB.y, speed.b * time)) + add.b);
vec3 rgb = vec3(r, g, b);
gl_FragColor = vec4((matColor * rgb), alpha);
}
void main(){
//input line coordinates
vec2 p0 = gl_PositionIn[0].xy;
vec2 p1 = gl_PositionIn[1].xy;
//generate 50 lines and distort with perlin noise
for (int i = 0; i < 50; i++){
float x0 = snoise(vec4(p0 *3.0, time * 0.5 + 12.4, i));
float y0 = snoise( vec4( p0 * 3.0, time * 0.5 + 304.2, i ) );
float x1 = snoise( vec4( p1 * 3.0, time * 0.5 + 20.1, i ) );
float y1 = snoise( vec4( p1 * 3.0, time * 0.5 + 43.6, i ) );
vec2 q0 = p0 + vec2( x0, y0 ) * 25.0;
vec2 q1 = p1 + vec2( x1, y1 ) * 25.0;
//calculate color
vec4 color = vec4(0.0);
vec2 delta = q1 - q0;
float len = distance( delta, vec2( 0.0 ) );
if ( len > 0 ) {
int n = int( len ) + 1;
delta /= n;
for (int i=0; i<n; i++) {
color += texture2DRect( texture, q0 + delta * i );
}
color /= n;
}
color.a *= 0.4; //Making output color transparent
//output line
gl_Position = gl_ModelViewProjectionMatrix * vec4(q0, 0.0, 1.0);
gl_FrontColor = color; //0 - left color, 1 - right color
EmitVertex();
gl_Position = gl_ModelViewProjectionMatrix * vec4(q1, 0.0, 1.0);
gl_FrontColor = color; //0 - left color, 1 - right color
EmitVertex();
EndPrimitive();
}
}
/*----------------------------------------------------------------------
Turbulence
(as described in Advanced RenderMan)
----------------------------------------------------------------------*/
double turbulence(double x, double y, double z, int octaves, double lacunarity, double gain)
{
double res=0.0;
double amp=1.0;
for(int i=0; i<octaves; i+=1)
{
res += amp*fabs(snoise(x,y,z));
amp *= gain;
x *= lacunarity;
y *= lacunarity;
z *= lacunarity;
}
return 0.5*(res+1.0);
}
// Result is in [0,1]
double noise(double x, double y, double z)
{
return 0.5 * (1.0 + snoise(x, y, z));
}
int generator(float i,float j,float w,float h,int t, int layer, int* refl){
float r=0.0;
float b=0.0;
float g=0.0;
float c=1.0,o;
float bmul=1.0;
float x,y;
float d=0.0;
float s=2.0*snoise(0.19*(i)/4.0,1.1*(j)/3.0)+0.5*4.6*snoise(0.19*(i/5.0),1.1*(j/5.0));
float s2=0.2*snoise(0.19*(i)/4.0,1.1*(i)/2.0)+0.2*2.3*snoise(0.19*(i/5.0),1.1*(0.6+j/5.0));
*refl=0;
if(j<0.6*h){
*refl=0xff00;
float x0y=1.6*bfnoise(0.25*(i+1000*t),0.25*(1000*t+j-32));
float x1y=1.6*bfnoise(0.25*(i+1000*t),0.25*(1000*t+j+32));
float y0x=0.3*bfnoise(0.25*(i+1000*t-32),0.25*(1000*t+j));
float y1x=0.3*bfnoise(0.25*(i+1000*t+32),0.25*(1000*t+j));
y0x+=0.25*t*bfnoise(0.05*(i+1000*t-32),0.25*(1000*t+j));
y1x+=0.25*bfnoise(0.05*(i+1000*t+32),0.25*(1000*t+j));
y0x+=1.2*bfnoise(0.15*(i+1000*t-32),0.25*(1000*t+j));
y1x+=1.2*bfnoise(0.15*(i+1000*t+32),0.25*(1000*t+j));
float curl=(y1x-y0x-x1y+x0y)/64.0;
float v=sqrt(1-curl*curl);
i=i-(232/j)*v*cos(0.3*t);
j=j-(132)*curl;
s=2.0*bfnoise(0.19*(i)/4.0,1.1*(j)/3.0)+0.5*4.6*snoise(0.19*(i/5.0),1.1*(j/5.0));
d=1;
s2=0.2*bfnoise(0.19*(i)/4.0,1.1*(i)/2.0)+0.2*2.3*snoise(0.19*(i/5.0),1.1*(0.6+j/5.0));
c=0.1;
o=0.9;
for(int m=1; m<3; ++m){
float s3=2.0*snoise(0.19*(i)/4.0,1.1*(j+m)/3.0)+0.5*4.6*snoise(0.19*(i/5.0),1.1*((j+m)/5.0));
o=s3*o+0.1;
c+=s3*s3*s*(1.0/(m+1.1))*o/17.0;
}
if( (float)(j)/h<0.6){
d=j*60.0-s*20.0;
r=snoise(0.1*i,i)+0.3*snoise(0.4,(int)(0.1*i));
x=floor(i);
y=floor(j);
int n=1;
if(((float)(j))/h<0.03*s+0.55){
float d1=exp(-abs(0.6+0.06*s-0.1-(float)(j)/h));
float d2=exp(-abs(0.65-0.1-(float)(j)/h));
float d3= min(1.0,1.0-2.0*d2)*min(1.0,1.0-2.0*d1)*exp(-0.3*abs(0.65-0.1-(float)(j)/h));
x=sin(s-0.09*(int)(s*i/8.0));
y=sin(s-0.09*(int)(s*j/8.0));
s2=6.0*s*(int)(snoise(x,y)*6.0);
float r1,g1,b1,r2,g2,b2,r3,g3,b3;
r1=0.1+2.3*(h-j)/(float)(h)*(0.1+s)-0.12*(int)(s*1.1*s)/(s+3.0)+0.3+(1-1.2*s)*exp(-1.9*s);
g1=0.1+2.3*(h-j)/(float)(h)*(0.1+s)-0.13*(int)(s*1.1*s)/(s+3.0)+0.2+(1-1.1*s)*exp(-1.9*s);
b1=0.8;
r2=s*0.8;
g2=(s*0.2+0.5);
b2=(s+0.3);
r3=0.1;
g3=0.11;
b3=0.1;
r=0.77+0.12*(r1*d1+r2*min(1.0-2.0*d1,1.0)*d2+r3*d3);
g=0.65+0.12*(g1*d1+g2*min(1.0,1.0-2.0*d1)*d2+g3*d3);
b=0.978+0.12*(b1*d1+b2*min(1.0,1.0-2.0*d1)*d2+b3*d3);
i=i+s*4.0;
float s4=0.2*snoise(0.19*(i)/4.0,1.1*(i)/2.0)+0.2*2.3*snoise(0.19*(i/5.0),1.1*(0.6+j/5.0));
i=i-s*4.0;
r=(1-lerp(s2,1.0,1.0-j/(h*2.0)));
}
else{
r=0.2;
g=0.3;
b=0.5;
}
if( 0.6-(float)(0.5*j)/h>6.0*s2){
r=0.5;
g=0.24;
b=0.6;
}
r=r*(j)/h+0.2;
g=g*(j)/h+0.1;
b=0.3;
}
}
else if( j<0.64*h+2.0*snoise(0.4,i)){
g=r=0.2;
b=0.6;
d=12000.0;
}
else if(snoise(i*0.001,1.0)<0.5 && j+0.6<56.0*snoise(0.4,(int)(0.1*i))+0.65*h){
d=12000.0+590.0;
r=snoise(0.1*i,i)+0.3*snoise(0.4,(int)(0.1*i));
x=(int)(i);
y=(int)(j);
int n=1;
for (int m=0; m<5; ++m){
if(((int)x)%3==1 && ((int)(y))%3==1) {
b=1.0;
n=0;
break;
}
x /= 1+snoise(i,j);
y /= 1+snoise(i,j);
}
if( n)
g*=0.5;
else{
for(int m=0; m<5; ++m){
x=(int)(i+6);
y=(int)(j+6);
int n=1;
int nc=0;
while((x>0 || y>0) && nc<3){
++nc;
if(((int)x)%3==1 && ((int)y)%3==1) {
b=1.0;
n=0;
break;
}
}
x /= 1+snoise(i,j);
y /= 1+snoise(i,j);
if (n)
g=1.5;
}
}
}
else if( j+0.6<56.0*snoise(i,0.3*i)+0.65*h){
d=20000;
r=s2;
}
else if((float)(j)<0.78*h+0.2*sin(0.1*j)){
d=20000.0;
r=0.04;
g=0.0;
b=0.02;
}
else{
d=20000.0;
i*=0.008;
j*=0.9;
x=i*0.1;
y=j*0.1;
r=snoise(0.3*i,0.2*j-snoise(x,y))+snoise(0.3*i,0.2*j);
g=0.3+0.5/(1.0-r*0.5+0.14);
b=1.0-0.3/(1.0-0.2);
r=1.0+0.4/(1.0-r);
g*=0.3;
b*=0.2+0.1*snoise(i,j+i);
r*=0.1+0.2*snoise(i,j+i);
}
if( snoise(i,j+i)*h+0.6*h<1.0*j)
b=b+0.1;
int br=(int)(255.0*(c+0.1)*r);
int bg=(int)(255.0*(c+0.1)*g);
int bb=(int)(255.0*(c+0.24)*(b+0.3)*bmul);
return br*256+bg*65536+bb*256*256*256+255;
}
btScalar duWater::getWaterLevel(btScalar pos_x,
btScalar pos_z,
int wrapperNum)
{
// get water wrapper by index
duWater::WaterWrapper *wWrapper = wrapperByInd(wrapperNum);
if (!wWrapper)
return btScalar(0.0);
if (!wWrapper->wavesHeight)
return wWrapper->waterLevel;
float time = m_time;
////////// DISTANT WAVES //////////
// first component
float noise_coords[2];
duWaterDynInfo* dynInfo = wWrapper->dynamicsInfo;
noise_coords[0] = dynInfo->dst_noise_scale0 *
(pos_x + dynInfo->dst_noise_freq0 * time);
noise_coords[1] = dynInfo->dst_noise_scale0 *
(pos_z + dynInfo->dst_noise_freq0 * time);
float noise1 = snoise(noise_coords);
// second component
noise_coords[0] = dynInfo->dst_noise_scale1 *
(pos_z - dynInfo->dst_noise_freq1 * time);
noise_coords[1] = dynInfo->dst_noise_scale1 *
(pos_x - dynInfo->dst_noise_freq1 * time);
float noise2 = snoise(noise_coords);
float dist_waves = wWrapper->wavesHeight * noise1 * noise2;
float wave_height;
if (wWrapper->wDistArray) {
////////// SHORE WAVES //////////
// get coordinates in texture pixels
double x = (pos_x - wWrapper->shoreMapCenterX) / wWrapper->shoreMapSizeX;
double z = (wWrapper->shoreMapCenterZ + pos_z) / wWrapper->shoreMapSizeZ;
x += 0.5f;
z += 0.5f;
// if position is out of boundings, consider that shore dist = 1
if (x > 1.f || x < 0.f || z > 1.f || z < 0.f)
wave_height = dist_waves;
else {
// get coordinates in pixels
int array_width = wWrapper->shoreMapTexSize;
x *= array_width - .5f;
z *= array_width - .5f;
double floor_px;
double floor_py;
float fract_px = modf(x, &floor_px);
float fract_py = modf(z, &floor_py);
int px = static_cast<int>(floor_px);
int py = static_cast<int>(floor_py);
btScalar *distArray = wWrapper->wDistArray;
int up_lim = array_width - 1;
float dist00 = distArray[py * array_width + px];
float dist10 = distArray[py * array_width + btMin(px + 1, up_lim)];
float dist01 = distArray[btMin(py + 1, up_lim) * array_width + px];
float dist11 = distArray[btMin(py + 1, up_lim) * array_width + btMin(px + 1, up_lim)];
// distance on bottom, top edge
float dist0010 = dist00 * (1.f - fract_px) + dist10 * fract_px;
float dist0111 = dist01 * (1.f - fract_px) + dist11 * fract_px;
float shore_dist = dist0010 * (1.f - fract_py) + dist0111 * fract_py;
float shore_waves_length = wWrapper->wavesLength / float(wWrapper->maxShoreDist) / M_PI;
float waves_coords[2] = {dynInfo->dir_noise_scale *
(pos_x + dynInfo->dir_noise_freq * time),
dynInfo->dir_noise_scale *
(pos_z + dynInfo->dir_noise_freq * time)};
float dist_fact = sqrt(shore_dist);
float shore_dir_waves = wWrapper->wavesHeight
* fmax(shore_dist, dynInfo->dir_min_shore_fac)
* sinf((dist_fact / shore_waves_length + dynInfo->dir_freq * time))
* fmax(snoise(waves_coords), dynInfo->dir_min_noise_fac);
// mix two types of waves basing on distance to the shore
float mix_rate = btMax(dist_fact, dynInfo->dst_min_fac);
wave_height = shore_dir_waves * (1 - mix_rate) + dist_waves * mix_rate;
}
} else
wave_height = dist_waves;
btScalar cur_water_level = wWrapper->waterLevel + wave_height;
return cur_water_level;
}