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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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758 lines
20 KiB
ObjectPascal
758 lines
20 KiB
ObjectPascal
{mac_copy:spheres2.bmp}
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//
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// AggPas 2.4 RM3 Demo application
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// Note: Press F1 key on run to see more info about this demo
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//
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// Paths: src;src\ctrl;src\svg;src\util;src\platform\win;expat-wrap
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//
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program
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Agg2DDemo ;
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uses
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SysUtils ,
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agg_basics ,
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agg_platform_support ,
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file_utils_ ,
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agg_2D ;
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{$I agg_mode.inc }
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const
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flip_y = true;
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angle_step = 5;
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gamma_step = 0.1;
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var
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FONT_TIMES : AnsiString = 'Times New Roman';
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FONT_ARIAL : AnsiString = 'Arial';
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FONT_VERDA : AnsiString = 'Verdana';
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type
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the_application = object(platform_support )
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m_graphics ,
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m_timer : Agg2D;
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m_angle ,
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m_gamma : double;
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m_image : int;
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m_gmText : AnsiString;
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constructor Construct(format_ : pix_format_e; flip_y_ : boolean );
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destructor Destruct;
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procedure on_init; virtual;
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procedure on_draw; virtual;
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procedure on_mouse_move(x ,y : int; flags : unsigned ); virtual;
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procedure on_mouse_button_down(x ,y : int; flags : unsigned ); virtual;
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procedure on_mouse_button_up (x ,y : int; flags : unsigned ); virtual;
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procedure on_key(x ,y : int; key ,flags : unsigned ); virtual;
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end;
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{ CONSTRUCT }
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constructor the_application.Construct;
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begin
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inherited Construct(format_ ,flip_y_ );
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m_graphics.Construct;
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m_timer.Construct;
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m_angle:=0;
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m_gamma:=1.4;
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m_image:=6;
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Str(m_gamma:0:2 ,m_gmText ); m_gmText:='Gamma: ' + m_gmText;
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end;
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{ DESTRUCT }
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destructor the_application.Destruct;
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begin
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inherited Destruct;
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m_graphics.Destruct;
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m_timer.Destruct;
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Finalize(m_gmText );
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end;
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{ ON_INIT }
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procedure the_application.on_init;
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begin
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end;
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{ ON_DRAW }
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procedure the_application.on_draw;
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var
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xb1 ,yb1 ,xb2 ,yb2 : double;
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clr ,c1 ,c2 ,c3 : Color;
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img : Image;
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parl : array[0..5 ] of double;
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poly : array[0..11 ] of double;
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tm : double;
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fps : int;
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timer ,rate : AnsiString;
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begin
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start_timer;
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m_graphics.attach(
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rbuf_window._buf ,
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rbuf_window._width ,
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rbuf_window._height ,
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rbuf_window._stride );
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m_graphics.clearAll(255 ,255 ,255 );
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//m_graphics.clearAll(0 ,0 ,0 );
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//m_graphics.blendMode(BlendSub );
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//m_graphics.blendMode(BlendAdd );
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m_graphics.antiAliasGamma(m_gamma );
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// Set flipText(true) if you have the Y axis upside down.
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m_graphics.flipText(not flip_y );
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// ClipBox.
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//m_graphics.clipBox(50 ,50 ,rbuf_window._width - 50 ,rbuf_window._height - 50 );
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// Transfornations - Rotate around (300,300) to 5 degree
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m_graphics.translate(-300 ,-300 );
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m_graphics.rotate (deg2Rad(m_angle ) );
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m_graphics.translate(300 ,300 );
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//m_graphics.skew (0.1 ,0.1 );
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// Viewport - set 0,0,600,600 to the actual window size
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// preserving aspect ratio and placing the viewport in the center.
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// To ignore aspect ratio use Agg2D::Anisotropic
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// Note that the viewport just adds transformations to the current
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// affine matrix. So that, set the viewport *after* all transformations!
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m_graphics.viewport(
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0 ,0 ,600 ,600 ,
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0 ,0 ,_width ,_height ,
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//Anisotropic );
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XMidYMid );
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//XMinYMin );
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//XMidYMin );
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//XMaxYMin );
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//XMinYMid );
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//XMaxYMid );
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//XMinYMax );
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//XMidYMax );
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//XMaxYMax );
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// Rounded Rect
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m_graphics.lineColor(0 ,0 ,0 );
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m_graphics.noFill;
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m_graphics.roundedRect(0.5 ,0.5 ,600 - 0.5 ,600 - 0.5 ,20.0 );
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// Regular Text
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{ m_graphics.font(char_ptr(FONT_TIMES ) ,14.0 ,false ,false );
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m_graphics.fillColor(0 ,0 ,0 );
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m_graphics.noLine;
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m_graphics.text(100 ,20 ,char_ptr(PChar('Regular Raster Text -- Fast, but can''t be rotated' ) ) );{}
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// Outlined Text
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m_graphics.font(char_ptr(FONT_TIMES ) ,50.0 ,false ,false ,{RasterFontCache}VectorFontCache );
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m_graphics.lineColor(50 ,0 ,0 );
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m_graphics.fillColor(180 ,200 ,100 );
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m_graphics.lineWidth(1.0 );
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m_graphics.text(100.5 ,50.5 ,char_ptr(PChar('Outlined Text' ) ) );
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// Gamma Text
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(* m_graphics.font(char_ptr(FONT_ARIAL ) ,38.0 ,true ,true ,VectorFontCache );
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c1.Construct (255 ,0 ,0 ,255 );
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c2.Construct (0 ,255 ,0 ,255 );
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m_graphics.fillLinearGradient(50 ,1 ,300 ,10 ,c1 ,c2 );
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m_graphics.noLine;
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m_graphics.text(12.5 ,565.5 ,char_ptr(@m_gmText[1 ] ) );
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//m_graphics.rectangle(12.5 ,565.5 ,290 ,590 ); (**)
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// Text Alignment
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m_graphics.lineColor(0 ,0 ,0 );
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m_graphics.line(250.5 - 150 ,150.5 ,250.5 + 150 ,150.5 );
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m_graphics.line(250.5 ,150.5 - 20 ,250.5 ,150.5 + 20 );
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m_graphics.line(250.5 - 150 ,200.5 ,250.5 + 150 ,200.5 );
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m_graphics.line(250.5 ,200.5 - 20 ,250.5 ,200.5 + 20 );
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m_graphics.line(250.5 - 150 ,250.5 ,250.5 + 150 ,250.5 );
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m_graphics.line(250.5 ,250.5 - 20 ,250.5 ,250.5 + 20 );
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m_graphics.line(250.5 - 150 ,300.5 ,250.5 + 150 ,300.5 );
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m_graphics.line(250.5 ,300.5 - 20 ,250.5 ,300.5 + 20 );
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m_graphics.line(250.5 - 150 ,350.5 ,250.5 + 150 ,350.5 );
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m_graphics.line(250.5 ,350.5 - 20 ,250.5 ,350.5 + 20 );
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m_graphics.line(250.5 - 150 ,400.5 ,250.5 + 150 ,400.5 );
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m_graphics.line(250.5 ,400.5 - 20 ,250.5 ,400.5 + 20 );
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m_graphics.line(250.5 - 150 ,450.5 ,250.5 + 150 ,450.5 );
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m_graphics.line(250.5 ,450.5 - 20 ,250.5 ,450.5 + 20 );
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m_graphics.line(250.5 - 150 ,500.5 ,250.5 + 150 ,500.5 );
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m_graphics.line(250.5 ,500.5 - 20 ,250.5 ,500.5 + 20 );
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m_graphics.line(250.5 - 150 ,550.5 ,250.5 + 150 ,550.5 );
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m_graphics.line(250.5 ,550.5 - 20 ,250.5 ,550.5 + 20 );
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m_graphics.fillColor(100 ,50 ,50 );
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m_graphics.noLine;
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//m_graphics.textHints(false );
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m_graphics.font(char_ptr(FONT_TIMES ) ,40.0 ,false ,false ,VectorFontCache );
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m_graphics.textAlignment(AlignLeft ,AlignBottom );
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m_graphics.text(250.0 ,150.0 ,char_ptr(PChar('Left-Bottom' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignCenter ,AlignBottom );
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m_graphics.text(250.0 ,200.0 ,char_ptr(PChar('Center-Bottom' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignRight ,AlignBottom );
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m_graphics.text(250.0 ,250.0 ,char_ptr(PChar('Right-Bottom' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignLeft ,AlignCenter );
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m_graphics.text(250.0 ,300.0 ,char_ptr(PChar('Left-Center' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignCenter ,AlignCenter );
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m_graphics.text(250.0 ,350.0 ,char_ptr(PChar('Center-Center' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignRight ,AlignCenter );
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m_graphics.text(250.0 ,400.0 ,char_ptr(PChar('Right-Center' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignLeft ,AlignTop );
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m_graphics.text(250.0 ,450.0 ,char_ptr(PChar('Left-Top' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignCenter ,AlignTop );
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m_graphics.text(250.0 ,500.0 ,char_ptr(PChar('Center-Top' ) ) ,true ,0 ,0 );
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m_graphics.textAlignment(AlignRight ,AlignTop );
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m_graphics.text(250.0 ,550.0 ,char_ptr(PChar('Right-Top' ) ) ,true ,0 ,0 );
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// Gradients (Aqua Buttons)
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//=======================================
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m_graphics.font(char_ptr(FONT_VERDA ) ,20.0 ,false ,false ,VectorFontCache );
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xb1:=400;
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yb1:=80;
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xb2:=xb1 + 150;
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yb2:=yb1 + 36;
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clr.Construct (0 ,50 ,180 ,180 );
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m_graphics.fillColor (clr );
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clr.Construct (0 ,0 ,80 ,255 );
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m_graphics.lineColor (clr );
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m_graphics.lineWidth (1.0);
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m_graphics.roundedRect(xb1 ,yb1 ,xb2 ,yb2 ,12 ,18 );
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clr.Construct (0 ,0 ,0 ,0 );
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m_graphics.lineColor(clr );
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c1.Construct (100 ,200 ,255 ,255 );
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c2.Construct (255 ,255 ,255 ,0 );
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m_graphics.fillLinearGradient(xb1 ,yb1 ,xb1 ,yb1 + 30 ,c1 ,c2 );
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m_graphics.roundedRect (xb1 + 3 ,yb1 + 2.5 ,xb2 - 3 ,yb1 + 30 ,9 ,18 ,1 ,1 );
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clr.Construct (0 ,0 ,50 ,200 );
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m_graphics.fillColor(clr );
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m_graphics.noLine;
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m_graphics.textAlignment(AlignCenter ,AlignCenter );
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m_graphics.text(
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(xb1 + xb2 ) / 2.0 ,
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(yb1 + yb2 ) / 2.0 ,
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char_ptr(PChar('Aqua Button' ) ) ,
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true ,0.0 ,0.0 );
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c1.Construct(0 ,0 ,255 ,0 );
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c2.Construct(100 ,255 ,255 ,255 );
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m_graphics.fillLinearGradient(xb1 ,yb2 - 20 ,xb1 ,yb2 - 3 ,c1 ,c2 );
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m_graphics.roundedRect (xb1 + 3 ,yb2 - 20 ,xb2 - 3 ,yb2 - 2 ,1 ,1 ,9 ,18 );
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// Aqua Button Pressed
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xb1:=400;
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yb1:=30;
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xb2:=xb1 + 150;
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yb2:=yb1 + 36;
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clr.Construct (0 ,50 ,180 ,180 );
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m_graphics.fillColor (clr );
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clr.Construct (0 ,0 ,0 ,255 );
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m_graphics.lineColor (clr );
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m_graphics.lineWidth (2.0 );
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m_graphics.roundedRect(xb1 ,yb1 ,xb2 ,yb2 ,12 ,18 );
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clr.Construct (0 ,0 ,0 ,0 );
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m_graphics.lineColor(clr );
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c1.Construct (60 ,160 ,255 ,255 );
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c2.Construct (100 ,255 ,255 ,0 );
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m_graphics.fillLinearGradient(xb1 ,yb1 + 2 ,xb1 ,yb1 + 25 ,c1 ,c2 );
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m_graphics.roundedRect (xb1 + 3 ,yb1 + 2.5 ,xb2 - 3 ,yb1 + 30 ,9 ,18 ,1 ,1 );
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clr.Construct (0 ,0 ,50 ,255 );
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m_graphics.fillColor(clr );
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m_graphics.noLine;
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m_graphics.textAlignment(AlignCenter ,AlignCenter );
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m_graphics.text(
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(xb1 + xb2 ) / 2.0 ,
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(yb1 + yb2 ) / 2.0 ,
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char_ptr(PChar('Aqua Pressed' ) ) ,
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false ,0.0 );
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c1.Construct (0 ,180 ,255 ,0 );
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c2.Construct (0 ,200 ,255 ,255 );
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m_graphics.fillLinearGradient(xb1 ,yb2 - 25 ,xb1 ,yb2 - 5 ,c1 ,c2 );
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m_graphics.roundedRect (xb1 + 3 ,yb2 - 25 ,xb2 - 3 ,yb2 - 2 ,1 ,1 ,9 ,18 );
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// Basic Shapes -- Ellipse
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//===========================================
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m_graphics.lineWidth(3.5 );
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m_graphics.lineColor(20 ,80 ,80 );
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m_graphics.fillColor(200 ,255 ,80 ,200 );
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m_graphics.ellipse (450 ,200 ,50 ,90 );
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// Paths
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//===========================================
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m_graphics.resetPath;
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m_graphics.fillColor (255 ,0 ,0 ,100 );
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m_graphics.lineColor (0 ,0 ,255 ,100 );
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m_graphics.lineWidth (2 );
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m_graphics.moveTo (300 / 2 ,200 / 2 );
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m_graphics.horLineRel(-150 / 2 );
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m_graphics.arcRel (150 / 2 ,150 / 2 ,0 ,true ,false ,150 / 2 ,-150 / 2 );
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m_graphics.closePolygon;
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m_graphics.drawPath;
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m_graphics.resetPath;
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m_graphics.fillColor (255 ,255 ,0 ,100 );
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m_graphics.lineColor (0 ,0 ,255 ,100 );
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m_graphics.lineWidth (2 );
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m_graphics.moveTo (275 / 2 ,175 / 2 );
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m_graphics.verLineRel(-150 / 2 );
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m_graphics.arcRel (150 / 2 ,150 / 2 ,0 ,false ,false ,-150 / 2 ,150 / 2 );
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m_graphics.closePolygon;
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m_graphics.drawPath;
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m_graphics.resetPath;
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m_graphics.noFill;
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m_graphics.lineColor(127 ,0 ,0 );
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m_graphics.lineWidth(5 );
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m_graphics.moveTo (600 / 2 ,350 / 2 );
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m_graphics.lineRel (50 / 2 ,-25 / 2 );
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m_graphics.arcRel (25 / 2 ,25 / 2 ,deg2Rad(-30 ) ,false ,true ,50 / 2 ,-25 / 2 );
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m_graphics.lineRel (50 / 2 ,-25 / 2);
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m_graphics.arcRel (25 / 2 ,50 / 2 ,deg2Rad(-30 ) ,false ,true ,50 / 2 ,-25 / 2 );
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m_graphics.lineRel (50 / 2 ,-25 / 2 );
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m_graphics.arcRel (25 / 2 ,75 / 2 ,deg2Rad(-30 ) ,false ,true ,50 / 2 ,-25 / 2 );
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m_graphics.lineRel (50 ,-25 );
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m_graphics.arcRel (25 / 2 ,100 / 2 ,deg2Rad(-30 ) ,false ,true ,50 / 2 ,-25 / 2 );
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m_graphics.lineRel (50 / 2 ,-25 / 2 );
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m_graphics.drawPath;
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// Master Alpha. From now on everything will be translucent
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//===========================================
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m_graphics.masterAlpha(0.85 );
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// Image Transformations
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//===========================================
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img.Construct(
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rbuf_img(0 )._buf ,
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rbuf_img(0 )._width ,
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rbuf_img(0 )._height ,
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rbuf_img(0 )._stride );
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m_graphics.imageFilter(Bilinear );
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//m_graphics.imageResample(NoResample );
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//m_graphics.imageResample(ResampleAlways );
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m_graphics.imageResample(ResampleOnZoomOut );
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// Set the initial image blending operation as BlendDst, that actually
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// does nothing.
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//-----------------
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m_graphics.imageBlendMode(BlendDst );
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// Transform the whole image to the destination rectangle
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//-----------------
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if m_image = 1 then
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m_graphics.transformImage(@img ,450 ,200 ,595 ,350 );{1}
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// Transform the rectangular part of the image to the destination rectangle
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//-----------------
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if m_image = 2 then
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m_graphics.transformImage(
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@img ,60 ,60 ,img.width - 60 ,img.height - 60 ,
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450 ,200 ,595 ,350 );{2}
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// Transform the whole image to the destination parallelogram
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//-----------------
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if m_image = 3 then
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begin
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parl[0 ]:=450;
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parl[1 ]:=200;
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parl[2 ]:=595;
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parl[3 ]:=220;
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parl[4 ]:=575;
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parl[5 ]:=350;
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m_graphics.transformImage(@img ,@parl[0 ] );{3}
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end;
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// Transform the rectangular part of the image to the destination parallelogram
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//-----------------
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if m_image = 4 then
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begin
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parl[0 ]:=450;
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parl[1 ]:=200;
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parl[2 ]:=595;
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parl[3 ]:=220;
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parl[4 ]:=575;
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parl[5 ]:=350;
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m_graphics.transformImage(@img ,60 ,60 ,img.width - 60 ,img.height - 60 ,@parl[0 ] );{4}
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end;
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// Transform image to the destination path. The scale is determined by a rectangle
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//-----------------
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if m_image = 5 then
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begin
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m_graphics.resetPath;
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m_graphics.moveTo (450 ,200 );
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m_graphics.cubicCurveTo (595 ,220 ,575 ,350 ,595 ,350 );
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m_graphics.lineTo (470 ,340 );
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m_graphics.transformImagePath(@img ,450 ,200 ,595 ,350 );{5}
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end;
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// Transform image to the destination path.
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// The scale is determined by a rectangle
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//-----------------
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if m_image = 6 then
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begin
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m_graphics.resetPath;
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m_graphics.moveTo (450 ,200 );
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m_graphics.cubicCurveTo(595 ,220 ,575 ,350 ,595 ,350 );
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m_graphics.lineTo (470 ,340 );
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m_graphics.transformImagePath(
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@img ,60 ,60 ,img.width - 60 ,img.height - 60 ,
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450 ,200 ,595 ,350 );{6}
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end;
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// Transform image to the destination path.
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// The transformation is determined by a parallelogram
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if m_image = 7 then
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begin
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m_graphics.resetPath;
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m_graphics.moveTo (450 ,200 );
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m_graphics.cubicCurveTo(595 ,220 ,575 ,350 ,595 ,350 );
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m_graphics.lineTo (470 ,340 );
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parl[0 ]:=450;
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parl[1 ]:=200;
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parl[2 ]:=595;
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parl[3 ]:=220;
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parl[4 ]:=575;
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parl[5 ]:=350;
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m_graphics.transformImagePath(@img ,@parl[0 ] );{7}
|
|
|
|
end;
|
|
|
|
// Transform the rectangular part of the image to the destination path.
|
|
// The transformation is determined by a parallelogram
|
|
if m_image = 8 then
|
|
begin
|
|
m_graphics.resetPath;
|
|
m_graphics.moveTo (450 ,200 );
|
|
m_graphics.cubicCurveTo(595 ,220 ,575 ,350 ,595 ,350 );
|
|
m_graphics.lineTo (470 ,340 );
|
|
|
|
parl[0 ]:=450;
|
|
parl[1 ]:=200;
|
|
parl[2 ]:=595;
|
|
parl[3 ]:=220;
|
|
parl[4 ]:=575;
|
|
parl[5 ]:=350;
|
|
|
|
m_graphics.transformImagePath(@img ,60 ,60 ,img.width - 60 ,img.height - 60 ,@parl[0 ] );{8}
|
|
|
|
end;
|
|
|
|
// Free Image
|
|
img.Destruct;
|
|
|
|
// Add/Sub/Contrast Blending Modes
|
|
m_graphics.noLine;
|
|
m_graphics.fillColor(70 ,70 ,0 );
|
|
m_graphics.blendMode(BlendAdd );
|
|
m_graphics.ellipse (500 ,280 ,20 ,40 );
|
|
|
|
m_graphics.fillColor(255 ,255 ,255 );
|
|
m_graphics.blendMode(BlendContrast );
|
|
m_graphics.ellipse (500 + 40 ,280 ,20 ,40 );
|
|
|
|
// Radial gradient.
|
|
m_graphics.blendMode (BlendAlpha );
|
|
c1.Construct (255 ,255 ,0 , 0);
|
|
c2.Construct (0 ,0 ,127 );
|
|
c3.Construct (0 ,255 ,0 , 0);
|
|
m_graphics.fillRadialGradient(400 ,500 ,40 ,c1 ,c2 ,c3 );
|
|
m_graphics.ellipse (400 ,500 ,40 ,40 );
|
|
|
|
// More ...
|
|
(* m_graphics.masterAlpha(1 );
|
|
|
|
//m_graphics.lineColor(50 ,60 ,70 );
|
|
|
|
c1.Construct (255 ,0 ,0 ,255 );
|
|
c2.Construct (0 ,255 ,0 ,255 );
|
|
m_graphics.lineLinearGradient(0 ,0 ,500 ,0 ,c1 ,c2 );{}
|
|
|
|
m_graphics.fillColor(255 ,0 ,0 );
|
|
m_graphics.lineJoin (JoinMiter );
|
|
m_graphics.lineWidth(15 );
|
|
m_graphics.triangle (10 ,10 ,100 ,20 ,50 ,150 );
|
|
|
|
m_graphics.lineJoin (JoinRound );
|
|
m_graphics.lineWidth(4 );
|
|
m_graphics.noFill;
|
|
m_graphics.rectangle(55 ,540 ,135 ,495 );
|
|
|
|
m_graphics.masterAlpha(0.5 );
|
|
|
|
m_graphics.fillColor(255 ,127 ,65 );
|
|
m_graphics.star (300 ,300 ,30 ,70 ,55 ,5 );
|
|
m_graphics.arc (400 ,400 ,30 ,30 ,300 ,1150 );
|
|
|
|
m_graphics.lineWidth(20 );
|
|
m_graphics.lineCap (CapRound );
|
|
m_graphics.curve (80 ,400 ,90 ,220 ,190 ,390 );
|
|
m_graphics.curve (80 ,500 ,90 ,320 ,190 ,490 ,310 ,330 );
|
|
|
|
poly[0 ]:=400;
|
|
poly[1 ]:=580;
|
|
|
|
poly[2 ]:=530;
|
|
poly[3 ]:=400;
|
|
|
|
poly[4 ]:=590;
|
|
poly[5 ]:=500;
|
|
|
|
poly[6 ]:=450;
|
|
poly[7 ]:=380;
|
|
|
|
poly[8 ]:=490;
|
|
poly[9 ]:=570;
|
|
|
|
poly[10 ]:=420;
|
|
poly[11 ]:=420;
|
|
|
|
m_graphics.fillEvenOdd(false );
|
|
m_graphics.lineWidth (3 );
|
|
m_graphics.polygon (@poly[0 ] ,6 );
|
|
|
|
m_graphics.lineColor(221 ,160 ,221 );
|
|
m_graphics.lineWidth(6 );
|
|
m_graphics.polyline (@poly[0 ] ,6 ); (**)
|
|
|
|
// TIMER DRAW
|
|
// ----------
|
|
tm:=elapsed_time;
|
|
|
|
m_timer.attach(
|
|
rbuf_window._buf ,
|
|
rbuf_window._width ,
|
|
rbuf_window._height ,
|
|
rbuf_window._stride );
|
|
|
|
m_timer.antiAliasGamma(1.4 );
|
|
|
|
m_timer.flipText(not flip_y );
|
|
m_timer.viewport(
|
|
0 ,0 ,600 ,600 ,
|
|
0 ,0 ,_width ,_height ,
|
|
//Anisotropic );
|
|
XMidYMid );
|
|
|
|
Str(tm:0:2 ,timer );
|
|
|
|
timer:='Frame time: ' + timer + ' ms';
|
|
|
|
fps:=Trunc(1000 / tm );
|
|
|
|
Str(fps ,rate );
|
|
|
|
timer:=timer + ' (' + rate + ' FPS)';
|
|
|
|
m_timer.font(char_ptr(FONT_ARIAL ) ,15.0 ,true ,false ,VectorFontCache );
|
|
m_timer.noLine;
|
|
m_timer.fillColor(255 ,0 ,0 );
|
|
m_timer.text(350 ,8 ,char_ptr(@timer[1 ] ) );
|
|
|
|
end;
|
|
|
|
{ ON_MOUSE_MOVE }
|
|
procedure the_application.on_mouse_move;
|
|
begin
|
|
end;
|
|
|
|
{ ON_MOUSE_BUTTON_DOWN }
|
|
procedure the_application.on_mouse_button_down;
|
|
begin
|
|
end;
|
|
|
|
{ ON_MOUSE_BUTTON_UP }
|
|
procedure the_application.on_mouse_button_up;
|
|
begin
|
|
end;
|
|
|
|
{ ON_KEY }
|
|
procedure the_application.on_key;
|
|
begin
|
|
if key = key_f1 then
|
|
message_(
|
|
'"Quick and dirty prototype" of 2D drawing API for AGG.'#13#13 +
|
|
'Written and published by Maxim Shemanarev (c) 2005 - 2006. '#13 +
|
|
'Ported to Object Pascal by Milan Marusinec (c) 2007.'#13#13 +
|
|
'How to play with:'#13#13 +
|
|
'Key Down - Rotate clockwise'#13 +
|
|
'Key Up - Rotate counterclockwise'#13 +
|
|
'Key Right - Next image transformation'#13 +
|
|
'Key Left - Previous image transformation'#13 +
|
|
'Key Plus - Increase gamma'#13 +
|
|
'Key Minus - Decrease gamma' );
|
|
|
|
if key = key_down then
|
|
begin
|
|
m_angle:=m_angle - angle_step;
|
|
|
|
if m_angle < 0 then
|
|
m_angle:=360 - angle_step;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
if key = key_up then
|
|
begin
|
|
m_angle:=m_angle + angle_step;
|
|
|
|
if m_angle > 360 then
|
|
m_angle:=angle_step;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
if key = key_right then
|
|
begin
|
|
inc(m_image );
|
|
|
|
if m_image > 8 then
|
|
m_image:=1;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
if key = key_left then
|
|
begin
|
|
dec(m_image );
|
|
|
|
if m_image < 1 then
|
|
m_image:=8;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
if key = key_kp_plus then
|
|
begin
|
|
m_gamma:=m_gamma + gamma_step;
|
|
|
|
Str(m_gamma:0:2 ,m_gmText ); m_gmText:='Gamma: ' + m_gmText;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
if key = key_kp_minus then
|
|
begin
|
|
m_gamma:=m_gamma - gamma_step;
|
|
|
|
Str(m_gamma:0:2 ,m_gmText ); m_gmText:='Gamma: ' + m_gmText;
|
|
|
|
force_redraw;
|
|
|
|
end;
|
|
|
|
end;
|
|
|
|
VAR
|
|
app : the_application;
|
|
buf : array [0..255 ] of char;
|
|
ext : string[10 ];
|
|
|
|
img_name ,p ,n ,x : shortstring;
|
|
|
|
BEGIN
|
|
if Agg2DUsesFreeType then
|
|
begin
|
|
FONT_TIMES:='times.ttf';
|
|
FONT_ARIAL:='arial.ttf';
|
|
FONT_VERDA:='verdana.ttf';
|
|
|
|
end;
|
|
|
|
app.Construct(pix_format_bgra32 ,flip_y );
|
|
app.caption_ ('Agg2DDemo (F1-Help)' );
|
|
|
|
img_name:='spheres2';
|
|
|
|
{$IFDEF WIN32 }
|
|
if ParamCount > 0 then
|
|
begin
|
|
spread_name(ParamStr(1 ) ,p ,n ,x );
|
|
|
|
img_name:=fold_name(p ,n ,'' );
|
|
|
|
end;
|
|
|
|
{$ENDIF }
|
|
|
|
if not app.load_img(0 ,img_name ) then
|
|
begin
|
|
img_name:=img_name + #0;
|
|
ext :=app._img_ext + #0;
|
|
|
|
if img_name = 'spheres2'#0 then
|
|
begin
|
|
sprintf(@buf[0 ] ,'File not found: %s' ,ptrcomp(@img_name[1 ] ) );
|
|
sprintf(@buf[StrLen(@buf ) ] ,'%s. '#13'Download http://www.antigrain.com/' ,ptrcomp(@ext[1 ] ) );
|
|
sprintf(@buf[StrLen(@buf ) ] ,'%s' ,ptrcomp(@img_name[1 ] ) );
|
|
sprintf(@buf[StrLen(@buf ) ] ,'%s'#13'or copy it from another directory if available.' ,ptrcomp(@ext[1 ] ) );
|
|
|
|
end
|
|
else
|
|
begin
|
|
sprintf(@buf[0 ] ,'File not found: %s' ,ptrcomp(@img_name[1 ] ) );
|
|
sprintf(@buf[StrLen(@buf ) ] ,'%s' ,ptrcomp(@ext[1 ] ) );
|
|
|
|
end;
|
|
|
|
app.message_(@buf[0 ] );
|
|
|
|
end
|
|
else
|
|
if app.init(600 ,600 ,window_resize ) then
|
|
app.run;
|
|
|
|
app.Destruct;
|
|
|
|
END. |