问如何在OpenModelica 1.19.0中使用DynamicSelect动画
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Stack Overflow用户

提问于 2022-07-17 13:48:31

回答 1查看 76关注 0票数 0

任何值(坐标、颜色、文本等)在图形注释中，可以使用DynamicSelect表达式依赖于类变量。DynamicSelect具有带有两个参数的函数调用的语法，其中第一个参数指定编辑状态的值，第二个参数指定非编辑状态的值。第一个参数必须是一个文字表达式，该值用于编辑和/或浏览图表层时的注释。第二个参数可以包含对变量的引用，以启用动态行为，并且实际值用于图层的示意图动画的注释，例如在模拟之后。

为了进行测试，使用DynamicSelect创建了一个模型，用于在模拟期间更改颜色和坐标。

  model BarGraph_v001
  Modelica.Blocks.Interfaces.RealInput u annotation(
      Placement(visible = true, transformation(origin = {-104, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-62, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));
  equation

  
  annotation(
      Icon(graphics = {
      Rectangle(lineThickness = 2, extent = DynamicSelect({{-40, 100}, {40, -100}},{{-40, 100}, {u, -100}})), 
      Rectangle(visible=true, origin = DynamicSelect({0, 27},{0,u}), fillColor=DynamicSelect({192,192,192}, {125+u*5,125-u*5,125+u*5}), fillPattern = FillPattern.Solid, extent = {{-40, 13}, {40, -13}})}));
      
  end BarGraph_v001;

注意，DynamicSelect用于更改图标中矩形的原点和颜色的坐标。

此模型的静态图标是：

然后将其集成到一个带有刺激的模型和其他几个动画Modelica库元素中。

model BarGraph_test_001
Anim.BarGraph_v001 barGraph_v001 annotation(
    Placement(visible = true, transformation(origin = {22, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Sources.Sine sine(f = 4)  annotation(
    Placement(visible = true, transformation(origin = {-54, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Math.Gain gain(k = 25)  annotation(
    Placement(visible = true, transformation(origin = {-14, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Interaction.Show.RealValue realValue annotation(
    Placement(visible = true, transformation(origin = {28, 24}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Interaction.Show.BooleanValue booleanValue annotation(
    Placement(visible = true, transformation(origin = {56, -36}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Logical.GreaterThreshold greaterThreshold annotation(
    Placement(visible = true, transformation(origin = {18, -36}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
equation
  connect(gain.y, barGraph_v001.u) annotation(
    Line(points = {{-2, 0}, {16, 0}}, color = {0, 0, 127}));
connect(sine.y, gain.u) annotation(
    Line(points = {{-42, 0}, {-26, 0}}, color = {0, 0, 127}));
connect(realValue.numberPort, gain.y) annotation(
    Line(points = {{16, 24}, {8, 24}, {8, 0}, {-2, 0}}, color = {0, 0, 127}));
connect(greaterThreshold.y, booleanValue.activePort) annotation(
    Line(points = {{30, -36}, {44, -36}}, color = {255, 0, 255}));
connect(greaterThreshold.u, gain.y) annotation(
    Line(points = {{6, -36}, {-2, -36}, {-2, -12}, {10, -12}, {10, 0}, {-2, 0}}, color = {0, 0, 127}));
end BarGraph_test_001;

该模型在编辑器中如下所示：