Microsoft Small Basic

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' Kaleidoscope 0.41
' Copyright © 2013-2015 Nonki Takahashi. The MIT License.
'
' History:
' 0.41 2015-11-18 Changed background color as black. (GTB559-4)
' 0.21 2013-11-20 Pattern changed.
' 0.14 2013-11-20 Fixid for Silverlight. (GTB559-3)
' 0.1 2013-11-20 Created. (GTB559)
' 0.0 2013-11-19 22:19:34 Shapes generated by Shapes 1.5b.
'
gw = 600
gh = 519
GraphicsWindow.Width = gw
GraphicsWindow.Height = gh
GraphicsWindow.Title = "Kaleidoscope 0.41"
GraphicsWindow.BackgroundColor = "Black"
' initialize shapes
SB_Workaround()
Shapes_Init()
Shapes_MakeFlip()
' add shapes
scale = 1
iMin = 1
iMax = nShapes * 2
Shapes_Add()
angle = 120
Shapes_Rotate()
shape1 = shape
angle = 240
Shapes_Rotate()
shape2 = shape
angle = 0
Shapes_Rotate()
Shapes_Remove()
nShapes = Array.GetItemCount(shape)
For i = 1 To nShapes
  shape[i + nShapes] = shape1[i]
  shape[i + nShapes]["x"] = shape1[i]["rx"]
  shape[i + nShapes]["y"] = shape1[i]["ry"]
  shape[i + nShapes]["angle"] = shape1[i]["angle"] + 120
  shape[i + 2 * nShapes] = shape2[i]
  shape[i + 2 * nShapes]["x"] = shape2[i]["rx"]
  shape[i + 2 * nShapes]["y"] = shape2[i]["ry"]
  shape[i + 2 * nShapes]["angle"] = shape2[i]["angle"] + 240
EndFor
iMax = nShapes * 3
pos[1] = "x=0;y=0;"
pos[2] = "x=300;y=-173;"
pos[3] = "x=600;y=0;"
pos[4] = "x=0;y=346;"
pos[5] = "x=300;y=173;"
pos[6] = "x=600;y=346;"
nPos = Array.GetItemCount(pos)
For i = 1 To nPos
  Shapes_Add()
  Stack.PushValue("local", shX)
  Stack.PushValue("local", shY)
  x = pos[i]["x"]
  y = pos[i]["y"]
  Shapes_Move()
  shY = Stack.PopValue("local")
  shX = Stack.PopValue("local")
EndFor
Sub Shapes_Init
  ' Shapes | Initialize shapes data
  ' return shX, shY - current position of shapes
  ' return shape - array of shapes
  shX = 0 ' x offset
  shY = 0 ' y offset
  shape = ""
  shape[1] = "func=tri;x=0;y=0;x1=100;y1=0;x2=0;y2=173;x3=200;y3=173;angle=180;bc=#000000;pw=0;"
  shape[2] = "func=rect;x=60;y=40;width=45;height=20;angle=30;bc=#990000FF;pw=0;"
  shape[3] = "func=rect;x=116;y=13;width=45;height=30;angle=-10;bc=#99FF0000;pw=0;"
  shape[4] = "func=tri;x=82;y=109;x1=18;y1=0;x2=0;y2=40;x3=37;y3=40;angle=185;bc=#9900CC00;pw=0;"
  shape[5] = "func=tri;x=82;y=28;x1=10;y1=0;x2=0;y2=62;x3=21;y3=62;bc=#99FFCC00;pw=0;"
  shape[6] = "func=rect;x=30;y=5;width=20;height=20;bc=#99FF00FF;pw=0;"
  shape[7] = "func=rect;x=130;y=30;width=20;height=30;angle=45;bc=#99FF0066;pw=0;"
  shape[8] = "func=rect;x=130;y=60;width=10;height=40;angle=50;bc=#9900FFFF;pw=0;"
EndSub
Sub Shapes_MakeFlip
  nShapes = Array.GetItemCount(shape)
  y = 173
  For i = 1 To nShapes
    shape[i + nShapes]["func"] = shape[i]["func"]
    shape[i + nShapes]["x"] = shape[i]["x"]
    If shape[i]["func"] = "tri" Then
      height = shape[i]["y2"]
    Else
      height = shape[i]["height"]
    EndIf
    shape[i + nShapes]["y"] = 2 * y - shape[i]["y"] - height
    shape[i + nShapes]["bc"] = shape[i]["bc"]
    shape[i + nShapes]["pw"] = shape[i]["pw"]
    If shape[i]["func"] = "tri" Then
      shape[i + nShapes]["angle"] = 180 - shape[i]["angle"]
      shape[i + nShapes]["x1"] = shape[i]["x1"]
      shape[i + nShapes]["y1"] = shape[i]["y1"]
      shape[i + nShapes]["x2"] = shape[i]["x2"]
      shape[i + nShapes]["y2"] = shape[i]["y2"]
      shape[i + nShapes]["x3"] = shape[i]["x3"]
      shape[i + nShapes]["y3"] = shape[i]["y3"]
    ElseIf Text.IsSubText("rect|ell", shape[i]["func"]) Then
      shape[i + nShapes]["angle"] = -shape[i]["angle"]
      shape[i + nShapes]["width"] = shape[i]["width"]
      shape[i + nShapes]["height"] = shape[i]["height"]
    EndIf
  EndFor
EndSub
Sub Math_CartesianToPolar
  ' Math | convert cartesian coodinate to polar coordinate
  ' param x, y - cartesian coordinate
  ' return r, a - polar coordinate
  r = Math.SquareRoot(x * x + y * y)
  If x = 0 And y > 0 Then
    a = 90 ' [degree]
  ElseIf x = 0 And y < 0 Then
    a = -90
  Else
    a = Math.ArcTan(y / x) * 180 / Math.Pi
  EndIf
  If x < 0 Then
    a = a + 180
  ElseIf x > 0 And y < 0 Then
    a = a + 360
  EndIf
EndSub
Sub SB_RotateWorkaround
  ' Small Basic | Rotate workaround for Silverlight
  ' param x, y - original coordinate
  ' param alpha - angle [radian]
  ' returns x, y - workaround coordinate
  If shape[i]["func"] = "tri" Then
    x1 = -Math.Floor(shape[i]["x3"] / 2)
    y1 = -Math.Floor(shape[i]["y3"] / 2)
  ElseIf shape[i]["func"] = "line" Then
    x1 = -Math.Floor(Math.Abs(shape[i]["x1"] - shape[i]["x2"]) / 2)
    y1 = -Math.Floor(Math.Abs(shape[i]["y1"] - shape[i]["y2"]) / 2)
  EndIf
  ox = x - x1
  oy = y - y1
  x = x1 * Math.Cos(alpha) - y1 * Math.Sin(alpha) + ox
  y = x1 * Math.Sin(alpha) + y1 * Math.Cos(alpha) + oy
EndSub
Sub SB_Workaround
  ' Small Basic | Workaround for Silverlight
  ' returns silverlight - "True" if in remote
  color = GraphicsWindow.GetPixel(0, 0)
  If Text.GetLength(color) > 7 Then
    silverlight = "True"
    msWait = 300
  Else
    silverlight = "False"
  EndIf
EndSub
Sub Shapes_Add
  ' Shapes | add shapes as shapes data
  ' param iMin, iMax - shape indices to add
  ' param shape - array of shapes
  ' param scale - 1 if same scale
  ' return shWidth, shHeight - total size of shapes
  ' return shAngle - current angle of shapes
  Stack.PushValue("local", i)
  Shapes_CalcWidthAndHeight()
  s = scale
  For i = iMin To iMax
    GraphicsWindow.PenWidth = shape[i]["pw"] * s
    If shape[i]["pw"] > 0 Then
      GraphicsWindow.PenColor = shape[i]["pc"]
    EndIf
    If Text.IsSubText("rect|ell|tri|text", shape[i]["func"]) Then
      GraphicsWindow.BrushColor = shape[i]["bc"]
    EndIf
    If shape[i]["func"] = "rect" Then
      shape[i]["obj"] = Shapes.AddRectangle(shape[i]["width"] * s, shape[i]["height"] * s)
    ElseIf shape[i]["func"] = "ell" Then
      shape[i]["obj"] = Shapes.AddEllipse(shape[i]["width"] * s, shape[i]["height"] * s)
    ElseIf shape[i]["func"] = "tri" Then
      shape[i]["obj"] = Shapes.AddTriangle(shape[i]["x1"] * s, shape[i]["y1"] * s, shape[i]["x2"] * s, shape[i]["y2"] * s, shape[i]["x3"] * s, shape[i]["y3"] * s)
    ElseIf shape[i]["func"] = "line" Then
      shape[i]["obj"] = Shapes.AddLine(shape[i]["x1"] * s, shape[i]["y1"] * s, shape[i]["x2"] * s, shape[i]["y2"] * s)
    ElseIf shape[i]["func"] = "text" Then
      If silverlight Then
        fs = Math.Floor(shape[i]["fs"] * 0.9)
      Else
        fs = shape[i]["fs"]
      EndIf
      GraphicsWindow.FontSize = fs * s
      GraphicsWindow.FontName = shape[i]["fn"]
      shape[i]["obj"] = Shapes.AddText(shape[i]["text"])
    EndIf
    x = shape[i]["x"]
    y = shape[i]["y"]
    shape[i]["rx"] = x
    shape[i]["ry"] = y
    If silverlight And Text.IsSubText("tri|line", shape[i]["func"]) Then
      alpha = Math.GetRadians(shape[i]["angle"])
      SB_RotateWorkaround()
      shape[i]["wx"] = x
      shape[i]["wy"] = y
    EndIf
    Shapes.Move(shape[i]["obj"], shX + x * s, shY + y * s)
    If Text.IsSubText("rect|ell|tri|text", shape[i]["func"]) And shape[i]["angle"] <> 0 Then
      Shapes.Rotate(shape[i]["obj"], shape[i]["angle"])
    EndIf
  EndFor
  shAngle = 0
  i = Stack.PopValue("local")
EndSub
Sub Shapes_CalcRotatePos
  ' Shapes | Calculate position for rotated shape
  ' param["x"], param["y"] - position of a shape
  ' param["width"], param["height"] - size of a shape
  ' param ["cx"], param["cy"] - center of rotation
  ' param ["angle"] - rotate angle
  ' return x, y - rotated position of a shape
  _cx = param["x"] + param["width"] / 2
  _cy = param["y"] + param["height"] / 2
  x = _cx - param["cx"]
  y = _cy - param["cy"]
  Math_CartesianToPolar()
  a = a + param["angle"]
  x = r * Math.Cos(a * Math.Pi / 180)
  y = r * Math.Sin(a * Math.Pi / 180)
  _cx = x + param["cx"]
  _cy = y + param["cy"]
  x = _cx - param["width"] / 2
  y = _cy - param["height"] / 2
EndSub
Sub Shapes_CalcWidthAndHeight
  ' Shapes | Calculate total width and height of shapes
  ' param iMin, iMax - shape indices to add
  ' return shWidth, shHeight - total size of shapes
  For i = iMin To iMax
    If shape[i]["func"] = "tri" Or shape[i]["func"] = "line" Then
      xmin = shape[i]["x1"]
      xmax = shape[i]["x1"]
      ymin = shape[i]["y1"]
      ymax = shape[i]["y1"]
      If shape[i]["x2"] < xmin Then
        xmin = shape[i]["x2"]
      EndIf
      If xmax < shape[i]["x2"] Then
        xmax = shape[i]["x2"]
      EndIf
      If shape[i]["y2"] < ymin Then
        ymin = shape[i]["y2"]
      EndIf
      If ymax < shape[i]["y2"] Then
        ymax = shape[i]["y2"]
      EndIf
      If shape[i]["func"] = "tri" Then
        If shape[i]["x3"] < xmin Then
          xmin = shape[i]["x3"]
        EndIf
        If xmax < shape[i]["x3"] Then
          xmax = shape[i]["x3"]
        EndIf
        If shape[i]["y3"] < ymin Then
          ymin = shape[i]["y3"]
        EndIf
        If ymax < shape[i]["y3"] Then
          ymax = shape[i]["y3"]
        EndIf
      EndIf
      shape[i]["width"] = xmax - xmin
      shape[i]["height"] = ymax - ymin
    EndIf
    If i = 1 Then
      shWidth = shape[i]["x"] + shape[i]["width"]
      shHeight = shape[i]["y"] + shape[i]["height"]
    Else
      If shWidth < shape[i]["x"] + shape[i]["width"] Then
        shWidth = shape[i]["x"] + shape[i]["width"]
      EndIf
      If shHeight < shape[i]["y"] + shape[i]["height"] Then
        shHeight = shape[i]["y"] + shape[i]["height"]
      EndIf
    EndIf
  EndFor
EndSub
Sub Shapes_Move
  ' Shapes | Move shapes
  ' param iMin, iMax - shape indices to add
  ' param shape - array of shapes
  ' param scale - to zoom
  ' param x, y - position to move
  ' return shX, shY - new position of shapes
  Stack.PushValue("local", i)
  s = scale
  shX = x
  shY = y
  For i = iMin To iMax
    If silverlight And Text.IsSubText("tri|line", shape[i]["func"]) Then
      _x = shape[i]["wx"]
      _y = shape[i]["wy"]
    Else
      _x = shape[i]["rx"]
      _y = shape[i]["ry"]
    EndIf
    Shapes.Move(shape[i]["obj"], shX + _x * s, shY + _y * s)
  EndFor
  i = Stack.PopValue("local")
EndSub
Sub Shapes_Remove
  ' Shapes | Remove shapes
  ' param iMin, iMax - shapes indices to remove
  ' param shape - array of shapes
  Stack.PushValue("local", i)
  For i = iMin To iMax
    Shapes.Remove(shape[i]["obj"])
  EndFor
  i = Stack.PopValue("local")
EndSub
Sub Shapes_Rotate
  ' Shapes | Rotate shapes
  ' param iMin, iMax - shapes indices to rotate
  ' param shape - array of shapes
  ' param scale - to zoom
  ' param angle - to rotate
  Stack.PushValue("local", i)
  Stack.PushValue("local", x)
  Stack.PushValue("local", y)
  s = scale
  param["angle"] = angle
  param["cx"] = shWidth / 2
  param["cy"] = shHeight / 2
  For i = iMin To iMax
    param["x"] = shape[i]["x"]
    param["y"] = shape[i]["y"]
    param["width"] = shape[i]["width"]
    param["height"] = shape[i]["height"]
    Shapes_CalcRotatePos()
    shape[i]["rx"] = x
    shape[i]["ry"] = y
    If silverlight And Text.IsSubText("tri|line", shape[i]["func"]) Then
      alpha = Math.GetRadians(angle + shape[i]["angle"])
      SB_RotateWorkAround()
      shape[i]["wx"] = x
      shape[i]["wy"] = y
    EndIf
    Shapes.Move(shape[i]["obj"], shX + x * s, shY + y * s)
    Shapes.Rotate(shape[i]["obj"], angle + shape[i]["angle"])
  EndFor
  y = Stack.PopValue("local")
  x = Stack.PopValue("local")
  i = Stack.PopValue("local")
EndSub
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