I'm trying to figure out how to display a 3D cuboid in JavaFX or any other 2D graphics API, but the catch is that I need to use only 2D primitives. I haven't introduced perspective projection or camera techniques, and I think that might be part of the challenge. I'm pretty sure there's a clever way to do this, but I'm struggling to wrap my head around it. I've included some code snippets and would appreciate any insights or ideas from the community!
3 Answers
To create the illusion of a 3D cuboid, you can start by drawing two rectangles and then connecting the corners with diagonal lines. The coordinates will depend on your starting point and the specified width and height of your rectangle. Drawing it out on graph paper might help clarify the coordinates you need for each corner!
You could also consider adjusting the rectangles' positions to create the effect of depth. For example, shift one rectangle slightly to the side and upwards. This way, you enhance the illusion of the 3D shape without actually implementing 3D graphics. Here's how you could modify your rectangles' positions in the code!
You can use the Rectangle class to draw the front and back rectangles, then the Line class to connect the corners. For instance, if you've defined two rectangles in your code, just add lines between corresponding corners to complete the cuboid shape. Here's a quick code segment to get you started:
```java
Line l1 = new Line(r1.getX(), r1.getY(), r2.getX(), r2.getY());
Line l2 = new Line(r1.getX(), r1.getY() + h, r2.getX(), r2.getY() + h);
// Add additional lines as needed
```
Make sure to adjust the coordinates to match your rectangle dimensions!
Perfect! I think I’ll try sketching it first to get the coordinates down. Could you share an example of the code for the connecting lines?