2016 Update
This commit is contained in:
Tina Müller
parent
948b86eafa
commit
dcf5d15da3
7965 changed files with 139854 additions and 31002 deletions
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#include <windows.h>
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#include <string>
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#include <iostream>
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const int BMP_SIZE = 612;
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class myBitmap {
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public:
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myBitmap() : pen( NULL ), brush( NULL ), clr( 0 ), wid( 1 ) {}
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~myBitmap() {
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DeleteObject( pen ); DeleteObject( brush );
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DeleteDC( hdc ); DeleteObject( bmp );
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}
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bool create( int w, int h ) {
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BITMAPINFO bi;
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ZeroMemory( &bi, sizeof( bi ) );
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bi.bmiHeader.biSize = sizeof( bi.bmiHeader );
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bi.bmiHeader.biBitCount = sizeof( DWORD ) * 8;
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bi.bmiHeader.biCompression = BI_RGB;
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bi.bmiHeader.biPlanes = 1;
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bi.bmiHeader.biWidth = w;
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bi.bmiHeader.biHeight = -h;
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HDC dc = GetDC( GetConsoleWindow() );
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bmp = CreateDIBSection( dc, &bi, DIB_RGB_COLORS, &pBits, NULL, 0 );
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if( !bmp ) return false;
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hdc = CreateCompatibleDC( dc );
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SelectObject( hdc, bmp );
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ReleaseDC( GetConsoleWindow(), dc );
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width = w; height = h;
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return true;
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}
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void clear( BYTE clr = 0 ) {
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memset( pBits, clr, width * height * sizeof( DWORD ) );
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}
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void setBrushColor( DWORD bClr ) {
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if( brush ) DeleteObject( brush );
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brush = CreateSolidBrush( bClr );
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SelectObject( hdc, brush );
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}
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void setPenColor( DWORD c ) {
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clr = c; createPen();
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}
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void setPenWidth( int w ) {
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wid = w; createPen();
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}
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void saveBitmap( std::string path ) {
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BITMAPFILEHEADER fileheader;
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BITMAPINFO infoheader;
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BITMAP bitmap;
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DWORD wb;
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GetObject( bmp, sizeof( bitmap ), &bitmap );
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DWORD* dwpBits = new DWORD[bitmap.bmWidth * bitmap.bmHeight];
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ZeroMemory( dwpBits, bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD ) );
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ZeroMemory( &infoheader, sizeof( BITMAPINFO ) );
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ZeroMemory( &fileheader, sizeof( BITMAPFILEHEADER ) );
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infoheader.bmiHeader.biBitCount = sizeof( DWORD ) * 8;
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infoheader.bmiHeader.biCompression = BI_RGB;
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infoheader.bmiHeader.biPlanes = 1;
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infoheader.bmiHeader.biSize = sizeof( infoheader.bmiHeader );
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infoheader.bmiHeader.biHeight = bitmap.bmHeight;
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infoheader.bmiHeader.biWidth = bitmap.bmWidth;
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infoheader.bmiHeader.biSizeImage = bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD );
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fileheader.bfType = 0x4D42;
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fileheader.bfOffBits = sizeof( infoheader.bmiHeader ) + sizeof( BITMAPFILEHEADER );
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fileheader.bfSize = fileheader.bfOffBits + infoheader.bmiHeader.biSizeImage;
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GetDIBits( hdc, bmp, 0, height, ( LPVOID )dwpBits, &infoheader, DIB_RGB_COLORS );
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HANDLE file = CreateFile( path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL, NULL );
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WriteFile( file, &fileheader, sizeof( BITMAPFILEHEADER ), &wb, NULL );
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WriteFile( file, &infoheader.bmiHeader, sizeof( infoheader.bmiHeader ), &wb, NULL );
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WriteFile( file, dwpBits, bitmap.bmWidth * bitmap.bmHeight * 4, &wb, NULL );
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CloseHandle( file );
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delete [] dwpBits;
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}
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HDC getDC() const { return hdc; }
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int getWidth() const { return width; }
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int getHeight() const { return height; }
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private:
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void createPen() {
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if( pen ) DeleteObject( pen );
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pen = CreatePen( PS_SOLID, wid, clr );
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SelectObject( hdc, pen );
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}
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HBITMAP bmp; HDC hdc;
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HPEN pen; HBRUSH brush;
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void *pBits; int width, height, wid;
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DWORD clr;
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};
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class sierpinski {
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public:
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void draw( int o ) {
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colors[0] = 0xff0000; colors[1] = 0x00ff33; colors[2] = 0x0033ff;
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colors[3] = 0xffff00; colors[4] = 0x00ffff; colors[5] = 0xffffff;
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bmp.create( BMP_SIZE, BMP_SIZE ); HDC dc = bmp.getDC();
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drawTri( dc, 0, 0, ( float )BMP_SIZE, ( float )BMP_SIZE, o / 2 );
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bmp.setPenColor( colors[0] ); MoveToEx( dc, BMP_SIZE >> 1, 0, NULL );
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LineTo( dc, 0, BMP_SIZE - 1 ); LineTo( dc, BMP_SIZE - 1, BMP_SIZE - 1 );
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LineTo( dc, BMP_SIZE >> 1, 0 ); bmp.saveBitmap( "./st.bmp" );
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}
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private:
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void drawTri( HDC dc, float l, float t, float r, float b, int i ) {
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float w = r - l, h = b - t, hh = h / 2.f, ww = w / 4.f;
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if( i ) {
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drawTri( dc, l + ww, t, l + ww * 3.f, t + hh, i - 1 );
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drawTri( dc, l, t + hh, l + w / 2.f, t + h, i - 1 );
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drawTri( dc, l + w / 2.f, t + hh, l + w, t + h, i - 1 );
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}
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bmp.setPenColor( colors[i % 6] );
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MoveToEx( dc, ( int )( l + ww ), ( int )( t + hh ), NULL );
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LineTo ( dc, ( int )( l + ww * 3.f ), ( int )( t + hh ) );
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LineTo ( dc, ( int )( l + ( w / 2.f ) ), ( int )( t + h ) );
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LineTo ( dc, ( int )( l + ww ), ( int )( t + hh ) );
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}
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myBitmap bmp;
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DWORD colors[6];
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};
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int main(int argc, char* argv[]) {
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sierpinski s; s.draw( 12 );
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return 0;
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}
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@ -0,0 +1,21 @@
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-- The argument 'tri' is a list of co-ords: {x1, y1, x2, y2, x3, y3}
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function sierpinski (tri, order)
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local new, p, t = {}
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if order > 0 then
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for i = 1, #tri do
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p = i + 2
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if p > #tri then p = p - #tri end
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new[i] = (tri[i] + tri[p]) / 2
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end
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sierpinski({tri[1],tri[2],new[1],new[2],new[5],new[6]}, order-1)
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sierpinski({new[1],new[2],tri[3],tri[4],new[3],new[4]}, order-1)
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sierpinski({new[5],new[6],new[3],new[4],tri[5],tri[6]}, order-1)
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else
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love.graphics.polygon("fill", tri)
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end
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end
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-- Callback function used to draw on the screen every frame
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function love.draw ()
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sierpinski({400, 100, 700, 500, 100, 500}, 7)
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end
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@ -0,0 +1,12 @@
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\\ Sierpinski triangle fractal
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\\ Note: plotmat() can be found here on
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\\ http://rosettacode.org/wiki/Brownian_tree#PARI.2FGP page.
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\\ 6/3/16 aev
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pSierpinskiT(n)={
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my(sz=2^n,M=matrix(sz,sz),x,y);
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for(y=1,sz, for(x=1,sz, if(!bitand(x,y),M[x,y]=1);));\\fends
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plotmat(M);
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}
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{\\ Test:
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pSierpinskiT(9); \\ SierpT9.png
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}
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