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GuitarObject.pas
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GuitarObject.pas
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unit GuitarObject;
interface
uses
Windows, Classes, Graphics;
type
TGuitar = class
private
x, y : integer;
round_point : TPoint;
angle : real;
width, heigh : Integer;
procedure Set_Angle (const Alpha : Real); function Get_Angle : Real;
procedure Set_RotatingPoint (const pnt : TPoint); function Get_RotatingPoint : Tpoint;
procedure Set_Width (const width : Integer); function Get_Width : Integer;
procedure setPoint(thisPos: TPoint);
function getPos: TPoint;
public
constructor Create (const x, y : integer) overload;
procedure Draw (const Canvas: TCanvas);
procedure Set_Pos (const x, y : Integer);
procedure RotateRectangle (const x1, y1, x3, y3 : integer; const angle : real; const rot_point : TPoint; const Canvas : TCanvas);
class procedure RotatedEllipse (cx, cy, a, b : integer; angle : real; const rot_point : TPoint; const Canvas : TCanvas);
class procedure Circle (const rad, x, y : integer; const Canvas : TCanvas);
published
property PRotPoint : Tpoint read Get_RotatingPoint write Set_RotatingPoint;
property PAngle : Real read Get_Angle write Set_Angle;
property PWidth : Integer read Get_Width write Set_Width;
property Position: TPoint read getPos write setPoint;
end;
implementation
constructor TGuitar.Create(const x : Integer; const y: Integer);
begin
self := TGuitar.Create;
self.x := x;
self.y := y;
width := 150;
angle := 0;
end;
procedure TGuitar.Set_RotatingPoint(const pnt : TPoint);
begin
round_point := pnt;
end;
function TGuitar.Get_RotatingPoint: TPoint;
begin
result := round_point;
end;
procedure TGuitar.Set_Width(const width: Integer);
begin
if (self.width <> width) then self.width := width;
end;
function TGuitar.Get_Width: Integer;
begin
result := width;
end;
procedure TGuitar.Set_Angle(const Alpha: Real);
begin
angle := alpha;
end;
procedure TGuitar.Set_Pos(const x, y: Integer);
begin
self.x := x;
self.y := y;
end;
function TGuitar.getPos: TPoint;
begin
Result:= Point(x, y);
end;
procedure TGuitar.setPoint(thisPos: TPoint);
begin
x:= thisPos.x;
y:= thisPos.y;
end;
function TGuitar.Get_Angle: Real;
begin
result := angle;
end;
function Convert_x (const x, y, xc, yc : integer; const angle : real) : integer;
begin
result := Round((x-xc)*cos(angle) - (y -yc)*sin(angle)) ;
end;
function Convert_y (const x, y, xc, yc : integer; const angle : real) : integer;
begin
result := Round((x -xc)*sin(angle) + (y -yc)*cos(angle));
end;
procedure TGuitar.RotateRectangle (const x1, y1, x3, y3 : integer; const angle : real; const rot_point : TPoint; const Canvas : TCanvas);
var
xc, yc : integer;
x2, y2, x4, y4 : integer;
xx1, xx2, xx3, xx4 : integer;
yy1, yy2, yy3, yy4 : integer;
begin
xc := rot_point.x; yc := rot_point.y;
x2 := x3; x4 := x1;
y2 := y1; y4 := y3;
xx1 := Convert_x (x1, y1, xc, yc, angle) + xc; yy1 := Convert_y (x1, y1, xc, yc, angle) + yc;
xx2 := Convert_x (x2, y2, xc, yc, angle) + xc; yy2 := Convert_y (x2, y2, xc, yc, angle) + yc;
xx3 := Convert_x (x3, y3, xc, yc, angle) + xc; yy3 := Convert_y (x3, y3, xc, yc, angle) + yc;
xx4 := Convert_x (x4, y4, xc, yc, angle) + xc; yy4 := Convert_y (x4, y4, xc, yc, angle) + yc;
Canvas.Polygon([Point(xx1, yy1), Point(xx2, yy2), Point(xx3, yy3), Point(xx4, yy4), Point(xx1, yy1)]);
end;
procedure TGuitar.Draw (const Canvas: TCanvas);
var
Prev_PenColor, Prev_BrushColor : TColor;
Prev_PenWidth : Integer;
w_1, w_2, w_g, w_c, h_1, h_2, h_g, h_c: integer;
begin
heigh := 5*width div 12;
Prev_PenColor := Canvas.Pen.Color;
Prev_BrushColor := Canvas.Brush.Color;
Prev_PenWidth := Canvas.Pen.Width;
w_1 := Round (0.33*width);
w_2 := Round (0.17*width);
w_g := Round (0.42*width);
w_c := Round (0.083*width);
h_1 := heigh;
h_2 := Round (0.8*heigh);
h_g := Round (0.04*heigh);
h_c := Round (0.08*heigh);
Canvas.Pen.Width := 3;
Canvas.Pen.Color := clBlack;
Canvas.Brush.Color := $00000040;
RotateRectangle (x, y - h_g, x + w_g, y + h_g, angle, round_point, Canvas);
RotateRectangle (x + w_g, y - h_c, x + w_c + w_g, y + h_c, angle, round_point, Canvas);
RotatedEllipse((2*x - w_2 - w_1) div 2, (y), (w_1) div 2, (h_1 ) div 2, angle, round_point, Canvas);
Canvas.Pen.Color := clBlack;
Canvas.Brush.Color := $00000040;
RotatedEllipse((x - w_2+x) div 2, (y - h_2 div 2+y + h_2 div 2)div 2 , (x-(x - w_2)) div 2 , (y + h_2 div 2-(y - h_2 div 2)) div 2, angle, round_point, Canvas);
Canvas.Pen.Color := clBlack;
Canvas.Brush.Color := clBlack;
RotatedEllipse(x - w_2 div 2 - Round (0.45 *w_1), y, Round(0.15*h_1), Round(0.15*h_1), angle, round_point, Canvas);
Canvas.Pen.Color := Prev_PenColor;
Canvas.Brush.Color := Prev_BrushColor;
Canvas.Pen.Width := Prev_PenWidth;
end;
class procedure TGuitar.RotatedEllipse (cx, cy, a, b : integer; angle : real; const rot_point : TPoint; const Canvas : TCanvas);
const
MP = 0.55228475;
var
rot_x, rot_y : integer;
x1, x3, y1, y3: integer;
xx1, xx3 : integer;
yy1, yy3 : integer;
CA, SA, ACA, ASA, BCA, BSA : Double;
i, CX2, CY2 : Integer;
Dot_Arr : array[0..12] of TPoint;
function TransformPoint(X, Y: Double): TPoint;
begin
Result.X := Round(CX + X * ACA + Y * BSA);
Result.Y := Round(CY - X * ASA + Y * BCA);
end;
begin
rot_x := rot_point.x; rot_y := rot_point.y;
x1 := cx + a div 2;
x3 := cx - a div 2;
y1 := cy + b div 2;
y3 := cy - b div 2;
xx1 := Convert_x (x1, y1, rot_x, rot_y, angle) + rot_x; yy1 := Convert_y (x1, y1, rot_x, rot_y, angle) + rot_y;
xx3 := Convert_x (x3, y3, rot_x, rot_y, angle) + rot_x; yy3 := Convert_y (x3, y3, rot_x, rot_y, angle) + rot_y;
cx := (xx1 + xx3) div 2;
cy := (yy1 + yy3) div 2;
angle := -angle;
CA := Cos(angle);
SA := Sin(angle);
ACA := A * CA; ASA := A * SA;
BCA := B * CA; BSA := B * SA;
CX2 := 2 * CX; CY2 := 2 * CY;
Dot_Arr[0] := TransformPoint(1, 0);
Dot_Arr[1] := TransformPoint(1, MP);
Dot_Arr[2] := TransformPoint(MP, 1);
Dot_Arr[3] := TransformPoint(0, 1);
Dot_Arr[4] := TransformPoint(- MP, 1);
Dot_Arr[5] := TransformPoint(-1, MP);
for i := 0 to 5 do Dot_Arr[i + 6] := Point(CX2 - Dot_Arr[i].X, CY2 - Dot_Arr[i].Y);
Dot_Arr[12] := Dot_Arr[0];
Canvas.PolyBezier(Dot_Arr);
// Canvas.FloodFill (cx + Round(0.5*a), cy + Round(0.5*a), Canvas.Pen.Color, TFillStyle.fsBorder);
// Canvas.FloodFill (cx + Round(0.5*a), cy - Round(0.5*a), Canvas.Pen.Color, TFillStyle.fsBorder);
// Canvas.FloodFill (cx - Round(0.5*a), cy + Round(0.5*a), Canvas.Pen.Color, TFillStyle.fsBorder);
// Canvas.FloodFill (cx - Round(0.5*a), cy - Round(0.5*a), Canvas.Pen.Color, TFillStyle.fsBorder);
end;
class procedure TGuitar.Circle (const rad, x, y : integer; const Canvas : TCanvas);
begin
Canvas.Ellipse (X-Rad, Y-Rad, X+Rad, Y+Rad);
end;
end.