public class point3d {
float x;
float y;
float z;
public point3d(float x, float y, float z){
this.x = x;
this.y = y;
this.z = z;
}
public point3d(){
x = 0;
y = 0;
z = 0;
}
public float getX(){
return x;
}
void setX(float x) {
this.x =x;
}
public float getY(){
return y;
}
void setY(float y) {
this.y =y;
}
public float getZ(){
return z;
}
void setZ(float z) {
this.z = z;
}
public String toString()
{
return "(" + x + ", " + y + "," + z + ")";
}
}
这是我编写的point3d类代码,我想通过这个point3d类读取多个点,这在主类中给出了如何实现这一点。请帮助我?
答案 0 :(得分:3)
首先,类应该根据Naming Conventions以大写字母开头。
其次,您应该在主要类中为Point3d
创建一个容器,例如List
。
接下来,您可以迭代它并执行您的逻辑。
List<Point3d> points = new ArrayList<>(); // this is JDK7
List<Point3d> points = new ArrayList<Point3d>(); // this is before JDK7, pick one
points.add(new Point(4F, 3F, 2F)); // let's create some points to iterate over
points.add(new Point(23F, 7F, 5F));
for(Point3d point : points) {
// do some logic with point
}
后续问题是,您希望通过这些points
实现什么?
答案 1 :(得分:0)
我想我现在明白你的问题。你想制作一个三维矩形,这意味着你需要4个点(除非你想要它也有深度,在这种情况下你需要8个)。
所以你需要的是一个包含4个point3d
类的数组:
point3d[] rectangle = new point3d[4];
然后你只需要分配给那个数组:
rectangle[0] = new point3d(x,y,z); //note that the first element is 0, not 1
rectangle[1] = new point3d(x2,y2,z2);
...
如果您想稍后访问它们:
System.out.println(rectangle[0].getX());
我建议你做一些阅读:http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html