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TAChart: Improve visual effects in "bgra" demo. Based on code by "circular".

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git-svn-id: trunk@40095 -
This commit is contained in:
ask 2013-01-31 12:14:26 +00:00
parent 214494a95c
commit 4779a87e62
2 changed files with 40 additions and 40 deletions
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4
components/tachart/demo/bgra/Main.lfm
View File

@ -124,7 +124,7 @@ object Form1: TForm1
end
end
object tsBarEffects: TTabSheet
Caption = 'Slice scaling'
Caption = 'Bar effects'
ClientHeight = 455
ClientWidth = 708
object Panel2: TPanel
@ -328,7 +328,9 @@ object Form1: TForm1
BackColor = clBlack
Foot.Brush.Color = clBtnFace
Foot.Font.Color = clBlue
Margins.Left = 10
Margins.Top = 40
Margins.Right = 10
Margins.Bottom = 0
Title.Brush.Color = clBtnFace
Title.Font.Color = clBlue

76
components/tachart/demo/bgra/Main.pas
View File

@ -5,7 +5,7 @@ unit Main;
interface
uses
Classes, ComCtrls, ExtCtrls, Spin, StdCtrls, SysUtils, FileUtil, Forms,
Classes, ComCtrls, ExtCtrls, StdCtrls, SysUtils, FileUtil, Forms,
Controls, Graphics, Dialogs,
TAGraph, TASeries, TASources, TAAnimatedSource, TACustomSource,
BGRASliceScaling;
@ -67,38 +67,26 @@ uses
Math, BGRABitmap, BGRABitmapTypes, BGRAGradients,
TAChartUtils, TADrawerBGRA, TADrawerCanvas, TADrawUtils, TAGeometry;
function CreateChocolateTexture(ATx, ATy: integer): TBGRABitmap;
function CreateChocolateBar(
ALightPos: TPoint; ARect: TRect; ABackColor: TBGRAPixel;
ARoundedCorners: Boolean; AOptions: TRectangleMapOptions): TBGRABitmap;
var
square, map: TBGRABitmap;
phong: TPhongShading;
margin: Integer;
t: TPoint;
begin
margin := ATx div 20;
map := TBGRABitmap.Create(ATx, ATy, BGRABlack);
t := MaxPoint(ARect.BottomRight - ARect.TopLeft, Point(0, 0));
Result := TBGRABitmap.Create(t.X, t.Y, ABackColor);
if (t.X = 0) and (t.Y = 0) then exit;
phong := TPhongShading.Create;
try
square := CreateRectangleMap(ATx - 2 * margin, ATy - 2 * margin, ATx div 8);
try
map.PutImage(margin, margin, square, dmDrawWithTransparency);
BGRAReplace(map, map.FilterBlurRadial(ATx div 40, rbFast));
finally
square.free;
end;
Result := TBGRABitmap.Create(ATx, ATy);
phong := TPhongShading.Create;
try
phong.LightSourceDistanceFactor := 0;
phong.LightDestFactor := 0;
phong.LightSourceIntensity := 200;
phong.AmbientFactor := 0.5;
phong.LightPosition := Point(-50, -100);
phong.LightPositionZ := 80;
phong.Draw(Result, map, 20, 0, 0, BGRA(86, 41, 38));
finally
phong.Free;
end;
phong.AmbientFactor := 0.5;
phong.LightPosition := ALightPos - ARect.TopLeft;
phong.DrawRectangle(
Result, BoundsSize(0, 0, t), t.X div 8, t.X div 8,
GammaCompression(SetIntensity(GammaExpansion(BGRA(86, 41, 38)), 30000)),
ARoundedCorners, AOptions);
finally
map.Free;
phong.Free;
end;
end;
@ -135,8 +123,9 @@ procedure TForm1.chBarEffectsBarSeries1BeforeDrawBar(ASender: TBarSeries;
ACanvas: TCanvas; const ARect: TRect; APointIndex, AStackIndex: Integer;
var ADoDefaultDrawing: Boolean);
var
temp, chocolate: TBGRABitmap;
temp, stretched: TBGRABitmap;
sz: TPoint;
lightPos: TPoint;
begin
Unused(ASender);
Unused(APointIndex, AStackIndex);
@ -147,23 +136,27 @@ begin
temp := TBGRABitmap.Create(
FSliceScaling.BitmapWidth,
Round(FSliceScaling.BitmapWidth * sz.Y / sz.X));
stretched := nil;
try
FSliceScaling.Draw(temp, 0, 0, temp.Width, temp.Height);
temp.Draw(ACanvas, ARect);
temp.ResampleFilter := rfLinear;
stretched := temp.Resample(sz.x, sz.Y, rmFineResample) as TBGRABitmap;
stretched.Draw(ACanvas, ARect, False);
finally
temp.Free;
stretched.Free;
end;
end;
1: begin
chocolate := CreateChocolateTexture(sz.X, sz.X);
temp := TBGRABitmap.Create(sz.X, sz.Y);
try
temp.FillRect(0, 0, sz.X, sz.Y, chocolate, dmSet);
temp.Draw(ACanvas, ARect);
finally
temp.Free;
chocolate.Free;
end;
lightPos := Point(chBarEffects.ClientWidth div 2, 0);
with CreateChocolateBar(
lightPos, ARect, BGRAPixelTransparent, false, [rmoNoBottomBorder])
do
try
Draw(ACanvas, ARect.Left, ARect.Top, false);
finally
Free;
end;
end;
end;
end;
@ -175,7 +168,12 @@ begin
FAnimatedSource.AnimationInterval := 30;
FAnimatedSource.AnimationTime := 1000;
FAnimatedSource.OnGetItem := @OnGetItem;
chBarEffectsBarSeries1.Source := FAnimatedSource;
chBarEffects.BackColor:= BGRAToColor(CSSDarkSlateBlue);
chSimple.BackColor:= BGRAToColor(CSSYellowGreen);
chSimple.Color:= BGRAToColor(CSSYellowGreen);
chSimple.BackColor := BGRAToColor(CSSBeige);
FSliceScaling := TBGRASliceScaling.Create(Image1.Picture.Bitmap, 70, 0, 35, 0);
FSliceScaling.AutodetectRepeat;