从长方形变成梯形

发布于 2024-08-13 22:32:21 字数 191 浏览 4 评论 0原文

我如何使用 ActionScript3 将矩形转换为梯形

我的梯形是 3D 房间的地板，我想对其进行纹理化（位图图块）。

 _____________
|  |     |   |
|  |_____|   |
|  /      \  |
| / trapez.\ |
|/__________\|

原文

how can i transform rectangle into trapezoid with ActionScript3

my trapezoid is a floor of 3D room, and i want to texturize it (bitmap tile).

 _____________
|  |     |   |
|  |_____|   |
|  /      \  |
| / trapez.\ |
|/__________\|

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⊕婉儿 2024-08-20 22:32:21

这取决于“矩形”在程序中的表示方式。几个选项：

如果您的矩形是矢量，并且您可以访问锚点：
<前><代码>---> o-----o <---
| |
| |
哦------哦
变成：
<前><代码> o--o
/\
/\
哦------哦
简单地平移两个顶部点并将它们相互压缩。
如果该“矩形”实际上是一个 DisplayObject，您将需要“缝合”两个相同的 DisplayObject 以创建一个新的 DisplayObject。此页面包含您想要的示例以及示例代码。
另一种选择是使用 Papervision3D - 它使用上述渲染方法作为基础。< /p>
这有点棘手，但这是一个选择。您可以按照此处所述使用置换贴图。代码是 AS2，但“移植”应该相当简单。

编辑

正如这个答案，我建议您使用Papervision3D（参见第三个选项）为此，您可能想在“房间”周围移动相机。它还会照顾其他墙壁。

It depends on how the "rectangle" is represented in your program. Few options:

If your rectangle is vector, and you have access to the anchor points:
```
---> o------o <---
     |      |
     |      |
     o------o
```
Becomes:
```
       o--o
      /    \
     /      \
     o------o
```
Simply translate the two top points and condense them to each other.
If that 'rectangle' is actually a DisplayObject, you will need to 'stitch' two of the same DisplayObject to create a new one. This page has examples of what you want along with example code.
Another option would be to use Papervision3D - which is using the above rendering method as a base.
This one's a bit tricky, but it's an option. You can use displacement maps as described here. The code is AS2, but it should be fairly simple to "port".

EDIT

As par this answer, I suggest you use Papervision3D (see 3rd option) to do that, as you might want to move the camera around the "room". It will also take care of the other walls as well.

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