C中的图像文件 [英] Image file in C

问题描述

您好，我想知道如何在C中生成图像文件。我想

在图片顶部画一条线（png或JPG），但我不知道我知道从哪里开始b
。有什么帮助吗？

Hello, I am trying to know how I can generate an image file in C. I want to
draw a line on top of a picture (png or JPG), but I don''t know where to
start. Any help?

推荐答案

Afifov< af **** @ yahoo.com>写道：

Afifov <af****@yahoo.com> wrote:

您好，我想知道如何在C中生成图像文件。我想在图片顶部画一条线（png或JPG），但是我不知道从哪里开始。任何帮助？

Hello, I am trying to know how I can generate an image file in C. I want to
draw a line on top of a picture (png or JPG), but I don''t know where to
start. Any help?

这不是一个关于C语言本身的问题，因此严格说来这个组中的非主题演讲。


在大多数平台上，您可以使用gd库来执行这种魔术，

您可以使用google或on：< http找到所有相关内容：//www.boutell.com/gd/> ;.


- Philip


-

Philip Paeps请不要通过电子邮件发送任何回复
ph****@paeps.cx 我关注新闻组。


BOFH借口＃186：

权限被拒绝

This is not really a question about the C language itself and hence strictly
speaking off-topic in this group.

On most platforms, you can use the gd library to perform this sort of magic,
you can find all about it using google or on: <http://www.boutell.com/gd/>.

- Philip

--
Philip Paeps Please don''t email any replies
ph****@paeps.cx I follow the newsgroup.

BOFH Excuse #186:
permission denied

我不想使用任何库。我知道gd和libpng。这是

不是主题因为我正在寻找定义png

文件的C结构及其绘制方式。我想要的只是拍摄一张图片并在其上画一条线。但是我想知道矩阵的结构。

无论如何，你的回复都被注意到了。 Thx

I dont want to use any libraries. I know about the gd, and libpng. This is
not off topic because i am looking for the C struct that defines a png
file and how it is drawn. All i want to do is just take an image and draw
a line over it. But i want to know the struct of the matrix.
Anyway, your reply was noted. Thx

On Mon，01 Aug 2005 06:27:11 -0400，Afifov写道：

On Mon, 01 Aug 2005 06:27:11 -0400, Afifov wrote:

I不想使用任何库。我知道gd和libpng。这不是主题，因为我正在寻找定义png
文件的C结构及其绘制方式。


问题是C语言没有定义与png

文件相关的任何内容。另外，不可能有单个结构定义

与png文件相关，因为结构的布局和单个字段的

表示可能来自一个C实现

另一个。

我想做的只是拍摄一张图片并画上一条线。但是我想知道矩阵的结构。
无论如何，你的回复都被注意到了。 Thx

I dont want to use any libraries. I know about the gd, and libpng. This is
not off topic because i am looking for the C struct that defines a png
file and how it is drawn.
The problem is that the C language doesn''t define anything related to png
files. Also there is unlikely to be a single struct definition that
relates to a png file because the layout of a structure and the
representation of individual fields can cary from one C implementation to
another.
All i want to do is just take an image and draw
a line over it. But i want to know the struct of the matrix.
Anyway, your reply was noted. Thx

您可能需要读取png文件的代码并将其转换为

相应的内部表示形式，当您''已完成的代码

重新编码您的内部表示并将其写入文件。在

中间，您将需要代码来绘制一条线。这是讨论所有

的好地方。这可能是comp.graphics.algorithms。


劳伦斯

You will probably need code that reads in a png file and converts it to an
appropriate internal representation, and when you''ve finished code that
reencodes your internal representation and writes it to a file. In the
middle you will need code to draw a line. A good place to discuss all of
this might be comp.graphics.algorithms.

Lawrence

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