Brownian tree/C++ animated: Difference between revisions
m
Fixed syntax highlighting.
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[[File:brownianTreeAnim_cpp.png|300px]]
The green dots you can see in this picture are what I call movers. They are particles that still do not belong to the tree.
<syntaxhighlight lang="cpp">
#include <windows.h>
#include <string>
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enum states { SEED, GROWING, MOVING, REST };
enum treeStates { NONE, MOVER, TREE };
const int MAX_SIDE =
//--------------------------------------------------------------------------------------------------
{
point(
▲ point( int a, int b ) { x = a; y = b; }
void set( int a, int b ) { x = a; y = b; }
int x, y;
};
//--------------------------------------------------------------------------------------------------
{
point pos;
bool moving;
movers() : moving( false ){}
};
//--------------------------------------------------------------------------------------------------
class myBitmap
{
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BITMAPINFO infoheader;
BITMAP bitmap;
DWORD wb;
GetObject( bmp, sizeof( bitmap ), &bitmap );
DWORD* dwpBits = new DWORD[bitmap.bmWidth * bitmap.bmHeight];
ZeroMemory( dwpBits, bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD ) );
ZeroMemory( &infoheader, sizeof( BITMAPINFO ) );
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GetDIBits( hdc, bmp, 0, height, ( LPVOID )dwpBits, &infoheader, DIB_RGB_COLORS );
HANDLE file = CreateFile( path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
WriteFile( file, &fileheader, sizeof( BITMAPFILEHEADER ), &wb, NULL );
WriteFile( file, &infoheader.bmiHeader, sizeof( infoheader.bmiHeader ), &wb, NULL );
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}
HDC getDC() const { return hdc; }
int getWidth() const { return width; }
int getHeight() const { return height; }
private:
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void drawGrid()
{
_bmp.clear();
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for( int x = 0; x < MAX_SIDE; x++ )
{
BYTE g = _grid[x][y];
if( g != NONE )
{
DWORD clr = g > MOVER ? _color[g - 2] : RGB( 0, 255, 0 );
SetPixel( _bmp.getDC(), x, y, clr );
}
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m->moving = true;
int x = MAX_SIDE - MAX_SIDE / 2, y = MAX_SIDE / 4, a, b;
do
{
a = rand() % x + y; b = rand() % x + y;
m->pos.set( a, b );
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void startMovers()
{
for( int c = 0; c < MAX_MOVERS; c++ )
{
movers* m = &_movers[c];
addMover( m );
}
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void moveMovers()
{
bool found = false;
for( int m = 0; m < MAX_MOVERS; m++ )
{
movers* mm = &_movers[m];
if( !mm->moving ) continue;
found = true;
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}
//--------------------------------------------------------------------------------------------------
</syntaxhighlight>
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