小编all*_*hen的帖子

我已将 DOT 代码文件保存为 utf-8 编码。但它不能输出自定义形状的 png 图像文件。是否有示例来演示用户指定的字符集使用 graphviz？

演示代码在这里。

digraph G {

    bgcolor=black;
    edge [arrowsize=1, color=red];

    node [penwidth=1, color=white, labelloc=b];

    BR [shape=box, label="BR", charset="utf-8", image="??.png"];
    DS [shape=plaintext, fontname="SimSun", fontcolor=white, fontsize=18, label="??"];
    BR -> DS[dir=forward];
}

命令行的结果如下所示。

C:\dot>dot -Gcharset=utf-8 -Tpng -o demo.png demo.dot
Warning: No such file or directory while opening ???.png
Warning: No or improper image="???.png" for node "BR"

在Qt中，可以使用以下代码绘制三次贝塞尔曲线。

QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);

QPainterPath path;
path.moveTo(80, 320);
path.cubicTo(200, 80, 320, 80, 480, 320);

painter.setPen(QPen(Qt::black, 8));
painter.drawPath(path);

如何使用wxWidgets绘制相同的曲线？

这是一个非常好的例子,说明了如何使用graphviz生成复杂的图形.此处列出了点文件.

digraph G {
    compound=true;
    ranksep=1.25;
    label="From Past to Future...";

    node [shape=plaintext, fontsize=16];

    bgcolor=white;
    edge [arrowsize=1, color=black];

    /* Nodes */
    subgraph cluster_Computers {label="Computers"; labelloc="b"; Computers_icon};
    Computers_icon [label="", shape=box, style=invis, shapefile="Computers.png"];

    subgraph cluster_Semantic_Web {label="Semantic Web"; labelloc="b"; Semantic_Web_icon};
    Semantic_Web_icon [label="", shape=box, style=invis, shapefile="Semantic_Web.png"];

    subgraph cluster_Cryptography {label="Cryptography"; labelloc="b"; Cryptography_icon};
    Cryptography_icon [label="", shape=box, style=invis, shapefile="Cryptography.png"];

    subgraph cluster_Automata {label="Automata"; labelloc="b"; Automata_icon};
    Automata_icon [label="", shape=box, style=invis, shapefile="Automata.png"];

    subgraph cluster_AI {label="A.I."; labelloc="b"; AI_icon};
    AI_icon [label="", shape=box, style=invis, shapefile="AI.png"];

    subgraph cluster_Chaos {label="Chaos / Fractals"; labelloc="b"; Chaos_icon};
    Chaos_icon …