private void cBoxMaterial_SelectedIndexChanged(object sender, EventArgs e)
{
string material = cBoxMaterial.SelectedItem.ToString();
double density;
bool canModified = false;
switch (material)
{
case "鋁":
_mType = ShapeType.Material.Al;
density = 2.7;
break;
case "鐵":
_mType = ShapeType.Material.Fe;
density = 7.87;
break;
case "鉛":
_mType = ShapeType.Material.Pb;
density = 11.3;
break;
default:
_mType = ShapeType.Material.UNKNOW;
density = 0;
canModified = true;
break;
}
txtDensity.Text = density.ToString();
if (!canModified)
{
txtDensity.Enabled = false;
}
}
public Pyramid(double side, double height, ShapeType.Material mType) : base(mType)
{
_geo = ShapeType.Geo.PYRAMID;
Side = side;
Height = height;
_amount++;
}
public Cylinder(double radius, double height, ShapeType.Material mType) : base(mType)
{
_geoType = ShapeType.Geo.CYLINDER;
Radius = radius;
Height = height;
_amount++;
}
public static Shape3D Create(string name, ShapeType.Material mType, double arg1, double arg2)
{
Shape3D rv = null;
switch (name)
{
case "球":
rv = Ball.Create(arg1, mType);
return(rv);
case "立方體":
rv = Cube.Create(arg1, mType);
return(rv);
case "圓柱體":
rv = Cylinder.Create(arg1, arg2, mType);
return(rv);
case "金字塔":
rv = Pyramid.Create(arg1, arg2, mType);
return(rv);
default:
return(rv);
}
}
public static string Name(ShapeType.Material mType)
{
foreach (var e in elements)
{
if (e.MaterialType == mType)
{
return(e.Name);
}
}
return("未知");
}
public static Cube Create(double side, ShapeType.Material mType)
{
if (side <= 0)
{
throw new NegativeException("邊長不可小於或等於零!");
}
else
{
return(new Cube(side, mType));
}
}
public static double Density(ShapeType.Material mType)
{
foreach (var e in elements)
{
if (e.MaterialType == mType)
{
return(e.Density);
}
}
return(0);
}
// private static double _pi=3.1415926; //可以使用 readonly 來修飾
public static Ball Create(double radius, ShapeType.Material mType)
{
if (radius <= 0)
{
throw new NegativeException("半徑不可小於或等於零!");
}
else
{
return(new Ball(radius, mType));
}
}
//private static double _pi = 3.1415926;
public static Cylinder Create(double radius, double height, ShapeType.Material mType)
{
if (radius <= 0)
{
throw new NegativeException("半徑不可小於或等於零!");
}
else if (height <= 0)
{
throw new NegativeException("高度不可小於或等於零!");
}
else
{
return(new Cylinder(radius, height, mType));
}
}
protected ShapeType.Material _materialType; //_material 與 _density 有相關性
public Shape3D()
{
_materialType = ShapeType.Material.UNKNOWN;
_amount++;
}
public Ball(double radius, ShapeType.Material mType) : base(mType)
{
_geoType = ShapeType.Geo.BALL;
Radius = radius;
_amount++;
}
public Cube(double side, ShapeType.Material mType) : base(mType)
{
_geoType = ShapeType.Geo.CUBE;
Side = side;
_amount++;
}
public Shape3D(ShapeType.Material mType)
{
//Density = density;
_material = mType;
_amount++;
}
public Shape3D()
{
//_density = 0;
_material = ShapeType.Material.UNKNOW;
_amount++;
}
private void setMaterialProperties(object sender, SetMaterialEventArgs e)
{
_mType = e.MType;
txtMaterial.Text = MaterialTable.Name(e.MType);
txtDensity.Text = MaterialTable.Density(e.MType).ToString();
}
public void MaterialFunc(object sender, MaterialEventArgs e)
{
_mType = e.MaterialType;
txtMaterial.Text = e.MaterialName;
txtDensity.Text = MaterialTable.Density(e.MaterialType).ToString();
}
public Shape3D(ShapeType.Material mType)
{
_materialType = mType;
_amount++;
}
public Element(ShapeType.Material mType, string name, double density)
{
MaterialType = mType;
Name = name;
Density = density;
}
