void RgbEffects::RenderSnowflakes(int Count, int SnowflakeType)
{
int i,n,x,y0,y,check,delta_y;
wxColour color1,color2;
if (state == 0 || Count != LastSnowflakeCount || SnowflakeType != LastSnowflakeType)
{
// initialize
LastSnowflakeCount=Count;
LastSnowflakeType=SnowflakeType;
palette.GetColor(0,color1);
palette.GetColor(1,color2);
ClearTempBuf();
// place Count snowflakes
for (n=0; n < Count; n++)
{
delta_y=BufferHt/4;
y0=(n % 4)*delta_y;
if (y0+delta_y > BufferHt) delta_y = BufferHt-y0;
// find unused space
for (check=0; check < 20; check++)
{
x=rand() % BufferWi;
y=y0 + (rand() % delta_y);
if (GetTempPixelRGB(x,y) == 0) break;
}
// draw flake, SnowflakeType=0 is random type
switch (SnowflakeType == 0 ? rand() % 5 : SnowflakeType-1)
{
case 0:
// single node
SetTempPixel(x,y,color1);
break;
case 1:
// 5 nodes
if (x < 1) x+=1;
if (y < 1) y+=1;
if (x > BufferWi-2) x-=1;
if (y > BufferHt-2) y-=1;
SetTempPixel(x,y,color1);
SetTempPixel(x-1,y,color2);
SetTempPixel(x+1,y,color2);
SetTempPixel(x,y-1,color2);
SetTempPixel(x,y+1,color2);
break;
case 2:
// 3 nodes
if (x < 1) x+=1;
if (y < 1) y+=1;
if (x > BufferWi-2) x-=1;
if (y > BufferHt-2) y-=1;
SetTempPixel(x,y,color1);
if (rand() % 100 > 50) // % 2 was not so random
{
SetTempPixel(x-1,y,color2);
SetTempPixel(x+1,y,color2);
}
else
{
SetTempPixel(x,y-1,color2);
SetTempPixel(x,y+1,color2);
}
break;
case 3:
// 9 nodes
if (x < 2) x+=2;
if (y < 2) y+=2;
if (x > BufferWi-3) x-=2;
if (y > BufferHt-3) y-=2;
SetTempPixel(x,y,color1);
for (i=1; i<=2; i++)
{
SetTempPixel(x-i,y,color2);
SetTempPixel(x+i,y,color2);
SetTempPixel(x,y-i,color2);
SetTempPixel(x,y+i,color2);
}
break;
case 4:
// 13 nodes
if (x < 2) x+=2;
if (y < 2) y+=2;
if (x > BufferWi-3) x-=2;
if (y > BufferHt-3) y-=2;
SetTempPixel(x,y,color1);
SetTempPixel(x-1,y,color2);
SetTempPixel(x+1,y,color2);
SetTempPixel(x,y-1,color2);
SetTempPixel(x,y+1,color2);
SetTempPixel(x-1,y+2,color2);
SetTempPixel(x+1,y+2,color2);
SetTempPixel(x-1,y-2,color2);
SetTempPixel(x+1,y-2,color2);
SetTempPixel(x+2,y-1,color2);
SetTempPixel(x+2,y+1,color2);
SetTempPixel(x-2,y-1,color2);
SetTempPixel(x-2,y+1,color2);
break;
case 5:
// 45 nodes (not enabled)
break;
}
}
}
// move snowflakes
int new_x,new_y,new_x2,new_y2;
for (x=0; x<BufferWi; x++)
{
new_x = (x+state/20) % BufferWi; // CW
new_x2 = (x-state/20) % BufferWi; // CCW
if (new_x2 < 0) new_x2+=BufferWi;
for (y=0; y<BufferHt; y++)
{
new_y = (y+state/10) % BufferHt;
new_y2 = (new_y + BufferHt/2) % BufferHt;
GetTempPixel(new_x,new_y,color1);
if (color1.GetRGB() == 0) GetTempPixel(new_x2,new_y2,color1);
SetPixel(x,y,color1);
}
}
}
void RenderBuffer::SetTempPixel(int x, int y, const xlColor & color, int alpha)
{
xlColor c(color.Red(), color.Green(), color.Blue(), alpha);
SetTempPixel(x, y, c);
}
// use tempbuf for calculations
void RgbEffects::RenderLife(int Count, int Type)
{
int i,x,y,cnt;
bool isLive;
wxColour color;
Count=BufferWi * BufferHt * Count / 200 + 1;
if (state == 0 || Count != LastLifeCount || Type != LastLifeType)
{
// seed tempbuf
LastLifeCount=Count;
LastLifeType=Type;
ClearTempBuf();
for(i=0; i<Count; i++)
{
x=rand() % BufferWi;
y=rand() % BufferHt;
GetMultiColorBlend(rand01(),false,color);
SetTempPixel(x,y,color);
}
}
long TempState=state % 400 / 20;
if (TempState == LastLifeState)
{
pixels=tempbuf;
return;
}
else
{
LastLifeState=TempState;
}
for (x=0; x < BufferWi; x++)
{
for (y=0; y < BufferHt; y++)
{
GetTempPixel(x,y,color);
isLive=(color.GetRGB() != 0);
cnt=Life_CountNeighbors(x,y);
switch (Type)
{
case 0:
// B3/S23
/*
Any live cell with fewer than two live neighbours dies, as if caused by under-population.
Any live cell with two or three live neighbours lives on to the next generation.
Any live cell with more than three live neighbours dies, as if by overcrowding.
Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.
*/
if (isLive && cnt >= 2 && cnt <= 3)
{
SetPixel(x,y,color);
}
else if (!isLive && cnt == 3)
{
GetMultiColorBlend(rand01(),false,color);
SetPixel(x,y,color);
}
break;
case 1:
// B35/S236
if (isLive && (cnt == 2 || cnt == 3 || cnt == 6))
{
SetPixel(x,y,color);
}
else if (!isLive && (cnt == 3 || cnt == 5))
{
GetMultiColorBlend(rand01(),false,color);
SetPixel(x,y,color);
}
break;
case 2:
// B357/S1358
if (isLive && (cnt == 1 || cnt == 3 || cnt == 5 || cnt == 8))
{
SetPixel(x,y,color);
}
else if (!isLive && (cnt == 3 || cnt == 5 || cnt == 7))
{
GetMultiColorBlend(rand01(),false,color);
SetPixel(x,y,color);
}
break;
case 3:
// B378/S235678
if (isLive && (cnt == 2 || cnt == 3 || cnt >= 5))
{
SetPixel(x,y,color);
}
else if (!isLive && (cnt == 3 || cnt == 7 || cnt == 8))
{
GetMultiColorBlend(rand01(),false,color);
SetPixel(x,y,color);
}
break;
case 4:
// B25678/S5678
if (isLive && (cnt >= 5))
{
SetPixel(x,y,color);
}
else if (!isLive && (cnt == 2 || cnt >= 5))
{
GetMultiColorBlend(rand01(),false,color);
SetPixel(x,y,color);
}
break;
}
}
}
// copy new life state to tempbuf
tempbuf=pixels;
}
