沿 Bézier 曲线定位图像
我们目前有一个动态图像，其中包含根据用户输入创建的文本。该文本遵循贝塞尔曲线来定义其位置和旋转。
由于各种原因，由于字体需要非常具体，因此需要将文本更改为一组图像。因此，我们将为每个允许的字母表字符分配一个 PNG。因此，如果用户输入单词“TEST”，系统将拉出字母 T、E、S 和 T，并将它们放在一起。这部分不是问题。
问题是使用graphics.DrawString强制每个图像遵循与文本相同的贝塞尔曲线。图像必须正确定位，并且最好也应正确旋转。
这可能吗？如何做到这一点？
We currently have a dynamic image, which holds on it text which is created from user input. This text follows a Bézier curve to define its position and rotation.
For various reasons, the text needs to be changed to be a set of images as the font needs to be very specific. We will therefore have one PNG for every allowable character of the alphabet. So if the user enters the word "TEST", the system will pull out the letters T, E, S and T and position them next to each other. This part isn't an issue.
The problem is forcing each of the images to follow the same Bézier curve as the text did using graphics.DrawString. The images must be positioned correctly, and ideally should be rotated correctly as well.
Is this possible, and how could this be done?
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简单的答案是，您“简单”地
但即使这样也无法获得相当漂亮的图像。通常，您需要对每个图像应用非线性变换，以便远离曲线的部分与靠近曲线的部分具有不同的宽度，具体取决于曲率和凸度。
此站点通过分解图像的轮廓来解释许多细节路径
但是，正如我确信之前的链接开始显示的那样，这是一个计算密集型过程。相反，您可能会发现将图像简单地转换为字体并使用您之前使用的方法要容易得多。该解决方案将依赖于一些第三方工具来进行转换，我犹豫是否提出建议。不过，（许多）方向之一是使用光栅到矢量图形工具，例如开源 Inkscape 并从矢量图形输出创建字体。此方法缩放效果最佳，但可能需要将输出转换为首选字体格式（如 True-Type）的单独步骤。
The quick answer is that you "simply"
But even this does not get a fairly good looking image. Usually you need to apply a nonlinear transform to each image so that parts away from curve have different width than those near the curve, depending on curvature and convexity.
This site explains many of the details by decomposing the outline of an image in paths
However, as the previous links I'm sure start to show, this is a calculation-intensive process. Instead, you may find it much easier to simply convert your images to fonts and use the method you were using previously. This solution would rely upon some third-party tool to do the conversion, and I hesitate to make suggestions. One direction, though, (of many) would be to use a raster-to-vector graphics tool like the open source Inkscape and create your fonts from the vector graphics output. This method scales best but may involve a separate step of converting the output to a preferred font format like True-Type.