mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-08-14 06:22:30 +02:00
TAChart: Add a TChartLiveView demo for paned chart (multi-axis)
(cherry picked from commit 79a2acf298)
This commit is contained in:
wp_xyz
parent
e61ebf84c2
commit
638e9ad8ae
257
components/tachart/demo/liveview_paned/main.lfm
Normal file
257
components/tachart/demo/liveview_paned/main.lfm
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@ -0,0 +1,257 @@
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object Form1: TForm1
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Left = 609
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Height = 693
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Top = 149
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Width = 496
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Caption = 'MainForm'
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ClientHeight = 693
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ClientWidth = 496
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OnCreate = FormCreate
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LCLVersion = '2.3.0.0'
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object Chart1: TChart
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Left = 0
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Height = 624
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Top = 0
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Width = 496
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AxisList = <
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item
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Grid.Color = clMenu
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Grid.Style = psSolid
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Alignment = calBottom
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AxisPen.Visible = True
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Marks.LabelBrush.Style = bsClear
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Minors = <>
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Range.UseMin = True
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Title.LabelFont.Style = [fsBold]
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Title.Visible = True
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Title.Caption = 'Time, s'
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Title.LabelBrush.Style = bsClear
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end
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item
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Grid.Color = clMenu
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Grid.Style = psSolid
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AtDataOnly = True
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AxisPen.Visible = True
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Group = 1
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Marks.AtDataOnly = True
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Marks.LabelBrush.Style = bsClear
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Minors = <>
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Range.Max = 1
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Range.Min = -1
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Range.UseMax = True
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Range.UseMin = True
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Title.LabelFont.Orientation = 900
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Title.LabelFont.Style = [fsBold]
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Title.Visible = True
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Title.Caption = 'Position, cm'
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Title.LabelBrush.Style = bsClear
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Title.PositionOnMarks = True
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Transformations = PositionTransformations
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end
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item
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Grid.Color = clMenu
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Grid.Style = psSolid
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AtDataOnly = True
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AxisPen.Visible = True
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Group = 1
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Marks.AtDataOnly = True
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Marks.LabelBrush.Style = bsClear
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Minors = <>
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Range.Max = 1
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Range.Min = -1
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Range.UseMax = True
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Range.UseMin = True
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Title.LabelFont.Orientation = 900
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Title.LabelFont.Style = [fsBold]
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Title.Visible = True
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Title.Caption = 'Velocity, cm/s'
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Title.LabelBrush.Style = bsClear
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Title.PositionOnMarks = True
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Transformations = VelocityTransformations
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end
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item
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Grid.Color = clMenu
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Grid.Style = psSolid
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AtDataOnly = True
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AxisPen.Visible = True
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Group = 1
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Marks.AtDataOnly = True
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Marks.LabelBrush.Style = bsClear
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Minors = <>
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Range.Max = 1
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Range.Min = -1
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Range.UseMax = True
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Range.UseMin = True
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Title.LabelFont.Orientation = 900
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Title.LabelFont.Style = [fsBold]
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Title.Visible = True
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Title.Caption = 'Acceleration, cm/s<sup>2</sup> '
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Title.LabelBrush.Style = bsClear
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Title.PositionOnMarks = True
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Title.TextFormat = tfHTML
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Transformations = AccelerationTransformations
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end>
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Frame.Visible = False
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Title.Font.Height = -16
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Title.Font.Style = [fsBold]
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Title.Text.Strings = (
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'Damped pendulum'
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)
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Title.Visible = True
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Align = alClient
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object PositionSeries: TLineSeries
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AxisIndexX = 0
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AxisIndexY = 1
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end
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object VelocitySeries: TLineSeries
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AxisIndexX = 0
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AxisIndexY = 2
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end
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object AccelerationSeries: TLineSeries
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AxisIndexX = 0
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AxisIndexY = 3
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end
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end
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object Panel1: TPanel
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Left = 8
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Height = 49
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Top = 636
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Width = 480
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Align = alBottom
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AutoSize = True
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BorderSpacing.Around = 8
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BevelOuter = bvNone
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ClientHeight = 49
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ClientWidth = 480
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TabOrder = 1
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object cbLiveView: TCheckBox
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AnchorSideLeft.Control = Panel1
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AnchorSideTop.Control = btnReset
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AnchorSideTop.Side = asrCenter
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Left = 0
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Height = 19
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Top = 3
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Width = 114
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Caption = 'Scrolling live view'
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Checked = True
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OnChange = cbLiveViewChange
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State = cbChecked
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TabOrder = 0
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end
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object cbFrozenAxes: TCheckBox
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AnchorSideLeft.Control = cbLiveView
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = btnReset
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AnchorSideTop.Side = asrCenter
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Left = 146
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Height = 19
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Top = 3
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Width = 122
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BorderSpacing.Left = 32
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Caption = 'Frozen vertical axes'
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Checked = True
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OnChange = cbFrozenAxesChange
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State = cbChecked
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TabOrder = 1
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end
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object btnReset: TButton
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AnchorSideLeft.Control = btnStopResume
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = Panel1
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Left = 387
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Height = 25
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Top = 0
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Width = 75
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BorderSpacing.Left = 4
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BorderSpacing.Right = 8
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Caption = 'Reset'
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OnClick = btnResetClick
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TabOrder = 2
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end
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object btnStopResume: TButton
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AnchorSideLeft.Control = cbFrozenAxes
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = Panel1
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Left = 308
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Height = 25
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Top = 0
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Width = 75
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BorderSpacing.Left = 40
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Caption = 'Stop'
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OnClick = btnStopResumeClick
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TabOrder = 3
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end
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object Label1: TLabel
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AnchorSideLeft.Control = cbLiveView
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AnchorSideTop.Control = seViewportSize
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AnchorSideTop.Side = asrCenter
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Left = 0
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Height = 15
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Top = 30
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Width = 88
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Caption = 'Viewport size (s):'
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end
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object seViewportSize: TFloatSpinEdit
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AnchorSideLeft.Control = Label1
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = cbLiveView
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AnchorSideTop.Side = asrBottom
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Left = 96
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Height = 23
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Top = 26
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Width = 58
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Alignment = taRightJustify
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BorderSpacing.Left = 8
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BorderSpacing.Top = 4
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DecimalPlaces = 0
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MaxValue = 60
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MinValue = 1
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OnChange = seViewportSizeChange
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TabOrder = 4
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Value = 10
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end
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end
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object Bevel1: TBevel
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Left = 0
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Height = 4
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Top = 624
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Width = 496
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Align = alBottom
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Shape = bsBottomLine
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end
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object PositionTransformations: TChartAxisTransformations
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Left = 213
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Top = 34
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object PositionAutoScaleTransform: TAutoScaleAxisTransform
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MaxValue = 3.4
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MinValue = 2.4
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end
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end
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object VelocityTransformations: TChartAxisTransformations
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Left = 213
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Top = 102
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object VelocityScaleTransform: TAutoScaleAxisTransform
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MaxValue = 2.2
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MinValue = 1.2
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end
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end
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object AccelerationTransformations: TChartAxisTransformations
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Left = 213
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Top = 176
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object AccelerationAutoScaleTransform: TAutoScaleAxisTransform
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end
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end
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object Timer: TTimer
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Enabled = False
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Interval = 100
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OnTimer = TimerTimer
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Left = 216
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Top = 287
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end
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object ChartLiveView1: TChartLiveView
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Chart = Chart1
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ViewportSize = 10
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Left = 216
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Top = 367
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end
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end
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202
components/tachart/demo/liveview_paned/main.pas
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202
components/tachart/demo/liveview_paned/main.pas
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@ -0,0 +1,202 @@
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{ This project demonstrates application of a TChartLiveView to a multiple-axis
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chart ("paned chart"). }
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unit main;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls,
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Spin, TAGraph, TATransformations, TASeries, TAChartLiveView;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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AccelerationAutoScaleTransform: TAutoScaleAxisTransform;
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Bevel1: TBevel;
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btnReset: TButton;
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btnStopResume: TButton;
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Chart1: TChart;
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ChartLiveView1: TChartLiveView;
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cbLiveView: TCheckBox;
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cbFrozenAxes: TCheckBox;
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Label1: TLabel;
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PositionSeries: TLineSeries;
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seViewportSize: TFloatSpinEdit;
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Timer: TTimer;
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VelocitySeries: TLineSeries;
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AccelerationSeries: TLineSeries;
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PositionTransformations: TChartAxisTransformations;
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PositionAutoScaleTransform: TAutoScaleAxisTransform;
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VelocityTransformations: TChartAxisTransformations;
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AccelerationTransformations: TChartAxisTransformations;
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Panel1: TPanel;
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VelocityScaleTransform: TAutoScaleAxisTransform;
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procedure btnResetClick(Sender: TObject);
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procedure btnStopResumeClick(Sender: TObject);
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procedure cbFrozenAxesChange(Sender: TObject);
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procedure cbLiveViewChange(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure seViewportSizeChange(Sender: TObject);
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procedure TimerTimer(Sender: TObject);
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private
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FStartTime: TDateTime;
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public
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end;
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var
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Form1: TForm1;
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implementation
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{$R *.lfm}
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uses
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//DateUtils,
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Math;
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const
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A0 = 10.0; // (initial) oscillation amplitude
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t0 = 5.0; // oscillation period
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td = 20.0; // damping time constant
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TWO_PI = 2.0*pi;
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{ TForm1 }
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{ Simulates position, velocity and acceleration of an oscillating body. The
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oscillation is damped, i.e. the excursions are decreasing with time. Parameters
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describing this damped oscillation are A0, t0 and td given above. }
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procedure TForm1.TimerTimer(Sender: TObject);
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var
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t: Double;
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x, v, a: Double;
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exp_factor, sin_factor, cos_factor: Double;
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begin
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if PositionSeries.Count = 0 then
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FStartTime := Now();
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t := (Now() - FStartTime) * SecsPerDay;
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exp_factor := exp(-t/td);
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sin_factor := sin(TWO_PI * t / t0);
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cos_factor := cos(TWO_PI * t / t0);
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// Position: an exponentially damped sinusoidal motion
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x := A0 * sin_factor * exp_factor;
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// velocity = dx/dt
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v := 1.0 / (t0*td) * (A0 * exp_factor * (2.0*pi*td * cos_factor - t0 * sin_factor));
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// acceleration = dv/dt = d2x/dt2
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a := x / sqr(td) - sqr(TWO_PI/t0) * x - 2.0*TWO_PI*A0/(t0*td) * exp_factor * cos_factor;
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// Add values to series
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PositionSeries.AddXY(t, x);
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VelocitySeries.AddXY(t, v);
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AccelerationSeries.AddXY(t, a);
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end;
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{ Toggles between normal view and scrolling live view. In case of normal view
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the entire extent of the chart is shown. }
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procedure TForm1.cbLiveViewChange(Sender: TObject);
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begin
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ChartLiveView1.Active := cbLiveView.Checked;
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if not ChartLiveView1.Active then
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Chart1.ZoomFull;
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end;
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{ Toggles between automatic scaling of the axes and predefined axis limits
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(see FormCreate for the predefined values). }
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procedure TForm1.cbFrozenAxesChange(Sender: TObject);
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var
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i: Integer;
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wasActive: Boolean;
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begin
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wasActive := ChartLiveView1.Active;
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ChartLiveView1.Active := false; // LiveView must be off when changing axes
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for i := 1 to 3 do
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with Chart1.AxisList[i].Range do
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begin
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UseMax := cbFrozenAxes.Checked;
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UseMin := cbFrozenAxes.Checked;
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end;
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ChartLiveView1.Active := wasActive; // Restore liveview state
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end;
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{ Resets and starts a new data generation run. }
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procedure TForm1.btnResetClick(Sender: TObject);
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begin
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Timer.Enabled := false;
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PositionSeries.Clear;
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VelocitySeries.Clear;
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AccelerationSeries.Clear;
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Timer.Enabled := true;
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btnStopResume.Caption := 'Stop';
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end;
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{ Stop or resume the data generation. When stopped a line break is added to the
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series. }
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procedure TForm1.btnStopResumeClick(Sender: TObject);
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var
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t: Double;
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begin
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Timer.Enabled := not Timer.Enabled;
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if Timer.Enabled then
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btnStopResume.Caption := 'Stop'
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else begin
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btnStopResume.Caption := 'Resume';
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// Add a break to the curves
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t := (Now() - FStartTime) * SecsPerDay;
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PositionSeries.AddXY(t, NaN);
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VelocitySeries.AddXY(t, NaN);
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AccelerationSeries.AddXY(t, NaN);
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end;
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end;
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procedure TForm1.FormCreate(Sender: TObject);
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begin
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{ The following settings could also be made in the object inspector. }
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// LiveView must be off when setting up the axes.
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with Chart1.AxisList[1].Range do
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begin
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UseMax := true;
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UseMin := true;
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Max := 10;
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Min := -10;
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end;
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with Chart1.AxisList[2].Range do
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begin
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UseMax := true;
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UseMin := true;
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Max := 15;
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Min := -15;
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end;
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with Chart1.AxisList[3].Range do
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begin
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UseMax := true;
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UseMin := true;
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Max := 15.0;
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Min := -15.0;
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end;
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// Activate the live view
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ChartLiveView1.Active := true;
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// Start the "measurement"
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Timer.Enabled := true;
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end;
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{ Set the liveview's ViewportSize according to the value in the SpinEdit }
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procedure TForm1.seViewportSizeChange(Sender: TObject);
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begin
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ChartLiveView1.ViewportSize := seViewportSize.Value;
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end;
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end.
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79
components/tachart/demo/liveview_paned/panedliveviewdemo.lpi
Normal file
79
components/tachart/demo/liveview_paned/panedliveviewdemo.lpi
Normal file
@ -0,0 +1,79 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<CONFIG>
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<ProjectOptions>
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||||
<Version Value="12"/>
|
||||
<PathDelim Value="\"/>
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||||
<General>
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<SessionStorage Value="InProjectDir"/>
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<Title Value="panedliveviewdemo"/>
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||||
<Scaled Value="True"/>
|
||||
<ResourceType Value="res"/>
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||||
<UseXPManifest Value="True"/>
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||||
<XPManifest>
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||||
<DpiAware Value="True"/>
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||||
</XPManifest>
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||||
</General>
|
||||
<BuildModes>
|
||||
<Item Name="Default" Default="True"/>
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||||
</BuildModes>
|
||||
<PublishOptions>
|
||||
<Version Value="2"/>
|
||||
<UseFileFilters Value="True"/>
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||||
</PublishOptions>
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<RunParams>
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||||
<FormatVersion Value="2"/>
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</RunParams>
|
||||
<RequiredPackages>
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<Item>
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||||
<PackageName Value="TAChartLazarusPkg"/>
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</Item>
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<Item>
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<PackageName Value="LCL"/>
|
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</Item>
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</RequiredPackages>
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||||
<Units>
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<Unit>
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||||
<Filename Value="panedliveviewdemo.lpr"/>
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<IsPartOfProject Value="True"/>
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</Unit>
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||||
<Unit>
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||||
<Filename Value="main.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="Form1"/>
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||||
<HasResources Value="True"/>
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||||
<ResourceBaseClass Value="Form"/>
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</Unit>
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||||
</Units>
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||||
</ProjectOptions>
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||||
<CompilerOptions>
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||||
<Version Value="11"/>
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||||
<PathDelim Value="\"/>
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||||
<Target>
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||||
<Filename Value="panedliveviewdemo"/>
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||||
</Target>
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||||
<SearchPaths>
|
||||
<IncludeFiles Value="$(ProjOutDir)"/>
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||||
<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
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||||
</SearchPaths>
|
||||
<Linking>
|
||||
<Options>
|
||||
<Win32>
|
||||
<GraphicApplication Value="True"/>
|
||||
</Win32>
|
||||
</Options>
|
||||
</Linking>
|
||||
</CompilerOptions>
|
||||
<Debugging>
|
||||
<Exceptions>
|
||||
<Item>
|
||||
<Name Value="EAbort"/>
|
||||
</Item>
|
||||
<Item>
|
||||
<Name Value="ECodetoolError"/>
|
||||
</Item>
|
||||
<Item>
|
||||
<Name Value="EFOpenError"/>
|
||||
</Item>
|
||||
</Exceptions>
|
||||
</Debugging>
|
||||
</CONFIG>
|
||||
25
components/tachart/demo/liveview_paned/panedliveviewdemo.lpr
Normal file
25
components/tachart/demo/liveview_paned/panedliveviewdemo.lpr
Normal file
@ -0,0 +1,25 @@
|
||||
program panedliveviewdemo;
|
||||
|
||||
{$mode objfpc}{$H+}
|
||||
|
||||
uses
|
||||
{$IFDEF UNIX}
|
||||
cthreads,
|
||||
{$ENDIF}
|
||||
{$IFDEF HASAMIGA}
|
||||
athreads,
|
||||
{$ENDIF}
|
||||
Interfaces, // this includes the LCL widgetset
|
||||
Forms, main, tachartlazaruspkg
|
||||
{ you can add units after this };
|
||||
|
||||
{$R *.res}
|
||||
|
||||
begin
|
||||
RequireDerivedFormResource:=True;
|
||||
Application.Scaled:=True;
|
||||
Application.Initialize;
|
||||
Application.CreateForm(TForm1, Form1);
|
||||
Application.Run;
|
||||
end.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user