86 php 绘图体系2

1.画圆柱

<code><span><span><?php </span><span>//1.画布</span><span>//默认是黑色</span><span>$img</span> = imagecreatetruecolor(<span>400</span>,<span>300</span>);
<span>$white</span> = imagecolorallocate(<span>$img</span>,<span>255</span>,<span>255</span>,<span>255</span>);
imagefill(<span>$img</span>,<span>0</span>,<span>0</span>,<span>$white</span>);

<span>//2.画扇形</span><span>//创建3个颜色</span><span>$red</span> = imagecolorallocate(<span>$img</span>,<span>255</span>,<span>0</span>,<span>0</span>);
<span>$blue</span> = imagecolorallocate(<span>$img</span>,<span>0</span>,<span>0</span>,<span>128</span>);
<span>$gray</span> = imagecolorallocate(<span>$img</span>,<span>192</span>,<span>192</span>,<span>192</span>);
<span>//暗色</span><span>$dardred</span> = imagecolorallocate(<span>$img</span>,<span>144</span>,<span>0</span>,<span>0</span>);
<span>$dardblue</span> = imagecolorallocate(<span>$img</span>,<span>0</span>,<span>0</span>,<span>80</span>);
<span>$dardgray</span> = imagecolorallocate(<span>$img</span>,<span>144</span>,<span>144</span>,<span>144</span>);

<span>for</span>(<span>$i</span>=<span>60</span>;<span>$i</span>>=<span>40</span>;<span>$i</span>--){
    imagefilledarc(<span>$img</span>,<span>100</span>,<span>$i</span>,<span>100</span>,<span>60</span>,<span>0</span>,<span>35</span>,<span>$dardblue</span>,IMG_ARC_PIE);
    imagefilledarc(<span>$img</span>,<span>100</span>,<span>$i</span>,<span>100</span>,<span>60</span>,<span>35</span>,<span>75</span>,<span>$dardgray</span>,IMG_ARC_PIE);
    imagefilledarc(<span>$img</span>,<span>100</span>,<span>$i</span>,<span>100</span>,<span>60</span>,<span>75</span>,<span>360</span>,<span>$dardred</span>,IMG_ARC_PIE);
}

<span>//在上面加个盖，亮色</span>
imagefilledarc(<span>$img</span>,<span>100</span>,<span>40</span>,<span>100</span>,<span>60</span>,<span>0</span>,<span>35</span>,<span>$blue</span>,IMG_ARC_PIE);
imagefilledarc(<span>$img</span>,<span>100</span>,<span>40</span>,<span>100</span>,<span>60</span>,<span>35</span>,<span>75</span>,<span>$gray</span>,IMG_ARC_PIE);
imagefilledarc(<span>$img</span>,<span>100</span>,<span>40</span>,<span>100</span>,<span>60</span>,<span>75</span>,<span>360</span>,<span>$red</span>,IMG_ARC_PIE);

<span>//输出图片</span>
header(<span>'content-type:image/png'</span>);
imagepng(<span>$img</span>);
imagedestroy(<span>$img</span>);
</span></span></code>

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