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<div class="post-toc animated"><ol class="nav"><li class="nav-item nav-level-3"><a class="nav-link" href="#%E5%A4%A7%E8%83%86%E5%AE%9E%E9%AA%8C"><span class="nav-number">1.</span> <span class="nav-text">大胆实验</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C1%EF%BC%9A%E4%BD%8D%E7%A7%BB%E5%8F%82%E6%95%B0%EF%BC%88%E6%9C%80%E5%90%8E%E4%B8%A4%E5%8F%82%E6%95%B0%EF%BC%89"><span class="nav-number">1.1.</span> <span class="nav-text">实验1：ä½ç§»å‚数（最åŽä¸¤å‚数）</span></a><ol class="nav-child"><li class="nav-item nav-level-5"><a class="nav-link" href="#%E2%91%A4-%E2%91%A5%E5%8F%82%E6%95%B0"><span class="nav-number">1.1.1.</span> <span class="nav-text">⑤&â‘¥å‚æ•°</span></a></li><li class="nav-item nav-level-5"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C1%E5%B0%8F%E7%BB%93"><span class="nav-number">1.1.2.</span> <span class="nav-text">实验1å°ç»“</span></a></li></ol></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C2%EF%BC%9A%E7%BC%A9%E6%94%BE%E5%8F%82%E6%95%B0%EF%BC%88%E7%AC%AC%E4%B8%80%E5%9B%9B%E5%8F%82%E6%95%B0%EF%BC%89"><span class="nav-number">1.2.</span> <span class="nav-text">实验2：缩放å‚数（第一四å‚数）</span></a><ol class="nav-child"><li class="nav-item nav-level-5"><a class="nav-link" href="#%E2%91%A0%E5%8F%82%E6%95%B0"><span class="nav-number">1.2.1.</span> <span class="nav-text">â‘ å‚æ•°</span></a></li><li class="nav-item nav-level-5"><a class="nav-link" href="#%E2%91%A3%E5%8F%82%E6%95%B0"><span class="nav-number">1.2.2.</span> <span class="nav-text">â‘£å‚æ•°</span></a></li><li class="nav-item nav-level-5"><a class="nav-link" href="#%E2%91%A0-%E2%91%A3%E5%8F%82%E6%95%B0"><span class="nav-number">1.2.3.</span> <span class="nav-text">â‘ &â‘£å‚æ•°</span></a></li><li class="nav-item nav-level-5"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C2%E5%B0%8F%E7%BB%93"><span class="nav-number">1.2.4.</span> <span class="nav-text">实验2å°ç»“</span></a></li></ol></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C3%EF%BC%9A%E5%80%BE%E6%96%9C%E5%8F%82%E6%95%B0%EF%BC%88%E7%AC%AC%E4%BA%8C%E4%B8%89%E5%8F%82%E6%95%B0%EF%BC%89"><span class="nav-number">1.3.</span> <span class="nav-text">实验3：倾斜å‚数（第二三å‚数）</span></a><ol class="nav-child"><li class="nav-item nav-level-5"><a class="nav-link" href="#%E2%91%A1%E5%8F%82%E6%95%B0"><span class="nav-number">1.3.1.</span> <span class="nav-text">â‘¡å‚æ•°</span></a></li></ol></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E6%BF%80%E6%83%85%E5%AE%9E%E8%B7%B5"><span class="nav-number">1.4.</span> <span class="nav-text">激情实践</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%9E%E9%AA%8C%E6%80%BB%E7%BB%93"><span class="nav-number">1.5.</span> <span class="nav-text">实验总结</span></a></li></ol></li><li class="nav-item nav-level-3"><a class="nav-link" href="#%E5%8F%91%E6%95%A3%E6%80%9D%E7%BB%B4"><span class="nav-number">2.</span> <span class="nav-text">å‘æ•£æ€ç»´</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#matrix-%E5%AD%98%E5%9C%A8%E7%9A%84%E6%84%8F%E4%B9%89%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F"><span class="nav-number">2.1.</span> <span class="nav-text">matrix()å˜åœ¨çš„æ„义是什么？</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%8F%98%E5%BD%A2%E5%87%BD%E6%95%B0%E6%B7%B7%E5%86%99%E7%AD%89%E4%BA%8Ematrix-%E4%B9%88%EF%BC%9F"><span class="nav-number">2.2.</span> <span class="nav-text">å˜å½¢å‡½æ•°æ··å†™ç‰äºŽmatrix()么？</span></a><ol class="nav-child"><li class="nav-item nav-level-5"><a class="nav-link" href="#%E6%88%BF%E8%B4%B7%E6%88%BF"><span class="nav-number">2.2.1.</span> <span class="nav-text">房贷房</span></a></li></ol></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E6%80%8E%E4%B9%88%E7%90%86%E8%A7%A3%E4%B8%89%E7%BB%B4%E7%9F%A9%E9%98%B5%E5%87%BD%E6%95%B0matrix3d-%EF%BC%9F"><span class="nav-number">2.3.</span> <span class="nav-text">怎么ç†è§£ä¸‰ç»´çŸ©é˜µå‡½æ•°matrix3d()？</span></a></li></ol></li><li class="nav-item nav-level-3"><a class="nav-link" href="#%E6%88%91%E7%9A%84%E6%83%B3%E6%B3%95"><span class="nav-number">3.</span> <span class="nav-text">我的想法</span></a></li></ol></div>
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用猴åæ€ç»´ç†è§£matrix()
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<div class="post-body" itemprop="articleBody"><p>matrix()？矩阵？喵喵喵？国家教育我到底有什么目的？<br>那么，在把ä¸å¦æ•°å¦å¿˜å¾—一干二净的情况下，è¦æ€Žä¹ˆç†è§£matrix()的用法？<br>本文略长，需è¦ç»“æžœçš„è¯·ç‚¹å‡»æ–‡ç« å·¦ä¾§çš„å¯¼èˆªç›´è¾¾â€œæ€»ç»“â€å¤„。</p>
<h3 id="大胆实验"><a href="#大胆实验" class="headerlink" title="大胆实验"></a>大胆实验</h3><p>我们å¯ä»¥çœ‹åˆ°matrix()一共有å…个å‚数，我会直接修改å‚数，然åŽçœ‹è¿è¡Œç»“果，用这ç§åšå®žéªŒçš„æ–¹å¼æ¥å¼ºè¡Œç†è§£æ¯ä¸ªå‚数的作用。本文用带圈的数å—作为代数：matrix(â‘ ,â‘¡,â‘¢,â‘£,⑤,â‘¥)ï¼Œæ ¹æ®ä¾§è¾¹æ 上的索引也å¯ä»¥æ‰¾åˆ°å…·ä½“å‚数的实验。</p>
<h4 id="实验1：ä½ç§»å‚数（最åŽä¸¤å‚数）"><a href="#实验1：ä½ç§»å‚数（最åŽä¸¤å‚数）" class="headerlink" title="实验1：ä½ç§»å‚数（最åŽä¸¤å‚数）"></a>实验1：ä½ç§»å‚数（最åŽä¸¤å‚数）</h4><h5 id="⑤-â‘¥å‚æ•°"><a href="#⑤-â‘¥å‚æ•°" class="headerlink" title="⑤&â‘¥å‚æ•°"></a>⑤&â‘¥å‚æ•°</h5><p>矩阵的默认值是transform:matrix(1,0,0,1,0,0)，红盒å…个å‚数都用默认值。<br><strong>æ“作：</strong>å°è¯•ä¿®æ”¹åŽé¢ä¸¤ä¸ªå‚数。<br>** 观察：**åŽé¢ä¸¤ä¸ªå‚数是ä½ç§»å‚数，å•ä½æ˜¯åƒç´ ï¼Œä»¥å…ƒç´ èµ·å§‹ç‚¹ä¸ºåŽŸç‚¹è¿›è¡Œä½ç§»ï¼ˆå…ƒç´ èµ·å§‹ç‚¹å°±æ˜¯å…ƒç´ å·¦ä¸Šè§’ï¼‰ã€‚<br><img src="/assets/img/00088.png"></p>
<h5 id="实验1å°ç»“"><a href="#实验1å°ç»“" class="headerlink" title="实验1å°ç»“"></a>实验1å°ç»“</h5><p>⑤å‚æ•°=æ°´å¹³ä½ç§»åƒç´ 值，数值由左至å³é€’å¢žï¼Œä»¥å…ƒç´ èµ·å§‹ç‚¹ä¸ºåŽŸç‚¹ã€‚<br>â‘¥å‚æ•°=åž‚ç›´ä½ç§»åƒç´ å€¼ï¼Œæ•°å€¼ç”±ä¸Šè‡³ä¸‹é€’å¢žï¼Œä»¥å…ƒç´ èµ·å§‹ç‚¹ä¸ºåŽŸç‚¹ã€‚<br>实现ä½ç§»ï¼Œæ•ˆæžœåŒ**translate()**函数。</p>
<h4 id="实验2：缩放å‚数（第一四å‚数）"><a href="#实验2：缩放å‚数（第一四å‚数）" class="headerlink" title="实验2：缩放å‚数（第一四å‚数）"></a>实验2：缩放å‚数（第一四å‚数）</h4><p>为了方便观察，我先把四个å—挪到ä¸åŒè±¡é™ä»¥ä¾¿è§‚察，接下æ¥çš„å‡ ä¸ªå®žéªŒéƒ½æ˜¯è¿™æ ·æ‘†æ”¾å››ä¸ªç›’å，所以åŽä¸¤ä½å‚æ•°ä¸ç”¨ç ”究它，ä¸æ˜¯æˆ‘è¦è¡¨è¾¾çš„é‡ç‚¹ã€‚除了åŽä¸¤ä½çš„ä½ç§»å‚数，红盒å‰å››ä¸ªå‚æ•°ä¿æŒé»˜è®¤å€¼ã€‚</p>
<h5 id="â‘ å‚æ•°"><a href="#â‘ å‚æ•°" class="headerlink" title="â‘ å‚æ•°"></a>â‘ å‚æ•°</h5><p><strong>æ“作：</strong>这次å°è¯•ä¿®æ”¹ç¬¬ä¸€ä¸ªå‚数。<br><strong>观察结果：</strong>肉眼å¯è§é™¤çº¢ç›’之外的三个盒å的宽度å‘生了å˜åŒ–，å˜åŒ–之åŽçš„宽度是原æ¥çš„宽度乘以这个å‚æ•°å¾—æ¥çš„；而当å‚æ•°ä¸ºè´Ÿæ•°æ—¶ï¼Œæ•´ä¸ªå…ƒç´ è¿›è¡Œäº†æ°´å¹³ç¿»è½¬ï¼Œæ–‡å—也å˜æˆäº†é•œåƒï¼›å˜åŒ–ä»¥å…ƒç´ ä¸å¿ƒç‚¹ä¸ºåŽŸç‚¹ã€‚<br><img src="/assets/img/00089.png"></p>
<h5 id="â‘£å‚æ•°"><a href="#â‘£å‚æ•°" class="headerlink" title="â‘£å‚æ•°"></a>â‘£å‚æ•°</h5><p><strong>æ“作：</strong>这次å°è¯•ä¿®æ”¹ç¬¬å››ä¸ªå‚æ•°<br><strong>观察结果：</strong>这次宽度ä¿æŒä¸å˜ï¼Œé«˜åº¦åˆ™æœ‰äº†å˜åŒ– ，å˜åŒ–è§„åˆ™å’Œå®½åº¦ä¸€æ ·ã€‚<br><img src="/assets/img/00090.png"></p>
<h5 id="â‘ -â‘£å‚æ•°"><a href="#â‘ -â‘£å‚æ•°" class="headerlink" title="â‘ &â‘£å‚æ•°"></a>â‘ &â‘£å‚æ•°</h5><p><strong>æ“作：</strong>åŒæ—¶ä¿®æ”¹ç¬¬ä¸€ä¸ªå’Œç¬¬å››ä¸ªå‚æ•°ï¼Œç”¨ä¸€æ ·çš„ç»å¯¹å€¼ã€‚<br><strong>观察结果：</strong>ç‰æ¯”缩放。<br><img src="/assets/img/00091.png"></p>
<h5 id="实验2å°ç»“"><a href="#实验2å°ç»“" class="headerlink" title="实验2å°ç»“"></a>实验2å°ç»“</h5><p>â‘ å‚æ•°=宽度缩放å€æ•°å€¼ï¼Œä¸ºè´Ÿæ•°æ—¶æ°´å¹³ç¿»è½¬ï¼Œä»¥å…ƒç´ åž‚ç›´ä¸å¿ƒçº¿ä¸ºè½´ã€‚<br>â‘£å‚æ•°=高度缩放å€æ•°å€¼ï¼Œä¸ºè´Ÿæ•°æ—¶åž‚ç›´ç¿»è½¬ï¼Œä»¥å…ƒç´ æ°´å¹³ä¸å¿ƒçº¿ä¸ºè½´ã€‚<br>两个å‚数能实现缩放，相ç‰æ—¶ï¼Œå®žçŽ°ç‰æ¯”缩放，效果åŒ**scale()**函数。</p>
<h4 id="实验3：倾斜å‚数（第二三å‚数）"><a href="#实验3：倾斜å‚数（第二三å‚数）" class="headerlink" title="实验3：倾斜å‚数（第二三å‚数）"></a>实验3：倾斜å‚数（第二三å‚数）</h4><h5 id="â‘¡å‚æ•°"><a href="#â‘¡å‚æ•°" class="headerlink" title="â‘¡å‚æ•°"></a>â‘¡å‚æ•°</h5><p><strong>æ“作：</strong>这次å°è¯•ä¿®æ”¹ç¬¬äºŒä¸ªå‚æ•°<br><img src="/assets/img/00092.png"><br>改å˜ç¬¬äºŒä¸ªå‚æ•°åŽï¼Œå…ƒç´ å˜æˆäº†å¹³è¡Œå››è¾¹å½¢ï¼Œå¹³è¡Œè¾¹ä¹‹é—´çš„è·ç¦»ä¿æŒä¸å˜ï¼Œä½†æ˜¯æ¨ªè¾¹åž‚ç›´æ–¹å‘å‘生了倾斜，并且å¯ä»¥æ— é™è¾¹é•¿ï¼ˆä¸çŸ¥é“是å¦èƒ½ä¼ 达我的æ„æ€ï¼Œæ€»ä¹‹ï¼Œå¤§å®¶è‡ªè¡Œä½“会）。和å‰é¢ä¸‰ä¸ªå®žéªŒä¸åŒçš„是，这次没办法用肉眼观察出倾斜幅度是按什么å•ä½æ¥çš„。æ¤æ—¶ï¼Œæˆ‘æŽå‡ºäº†é‡è§’器，在å±å¹•ä¸Šæ¯”划了下。<br><img src="/assets/img/00093.jpg"><br>以水平线为零刻度线进行测é‡ï¼Œå¾—到结果：红盒≈0°；绿盒≈26.5°；黄盒≈45°；è“盒≈-35°。这时，我把测é‡ç»“果和第二个å‚数放在一起对比一下，使用肉眼å°è¯•å¯»æ‰¾ä¸€ä¸‹é€»è¾‘关系。</p>
<table><tr><th>四个盒å</th><td>红盒</td><td>绿盒</td><td>黄盒</td><td>è“ç›’</td></tr><tr><th>倾斜角度</th><td>0°</td><td>26.5°</td><td>45°</td><td>-35°</td></tr><tr><th>第二å‚æ•°</th><td>0</td><td>0.5</td><td>1</td><td>-0.7</td></tr><tr><th>我的猜想</th><td>tan0°=0</td><td>喵喵喵？</td><td>tan45°=1</td><td>喵喵喵？</td></tr></table>
æ¤æ—¶ï¼Œæˆ‘大胆å‡è®¾ç¬¬äºŒå‚数是倾斜角度的æ£åˆ‡å€¼ï¼Œç„¶åŽï¼Œæˆ‘å¤šç”¨å‡ ä¸ªè§’åº¦çš„æ£åˆ‡å€¼å°å¿ƒæ±‚è¯ä¸€ä¸‹ï¼štan30°=√3/3≈0.577， tan60°=√3≈1.732， tan22.5°=√2-1≈0.414。
<img src="/assets/img/00094.png">
我å†ä¸¾ä¸ªç‰¹æ®Šçš„例å，å‡è®¾æˆ‘ä»¬æŠŠå…ƒç´ çš„æ¨ªè¾¹çš„å€¾æ–œè§’åº¦æ‹‰åˆ°90°，这å¯èƒ½å—？这ä¸å°±æ˜¯å’Œtan90Â°ä¸€æ ·ï¼Œæ˜¯ä¸å˜åœ¨çš„呀。
所以，ç§ä»¥ä¸ºï¼Œæ¤ç•ªçŒœæƒ³æ²¡æ¯›ç—…。
**观察结果：**å…ƒç´ åž‚ç›´æ–¹å‘顺时针å‘生倾斜，æ¤å‚数控制倾斜幅度。
##### â‘¢å‚æ•°
**æ“作：**这次å°è¯•ä¿®æ”¹ç¬¬ä¸‰ä¸ªå‚æ•°
**观察结果：**ç†è§£ç¬¬äºŒä¸ªå‚数之åŽï¼Œç¬¬ä¸‰ä¸ªå‚æ•°å°±ä¸ç”¨è§£é‡Šäº†ã€‚
<img src="/assets/img/00095.png">
##### â‘¡&â‘¢å‚æ•°
之å‰ä¿®æ”¹è¿™ä¸¤ä¸ªå‚数，都是在å¦ä¸€ä¸ªå‚数完全ä¸åŠ¨çš„情况下进行，但是如果两个å‚æ•°åŒæ—¶æ”¹å˜å‘¢ï¼Ÿ
**æ“作：**这次å°è¯•åŒæ—¶ä¿®æ”¹ç¬¬äºŒå’Œç¬¬ä¸‰ä¸ªå‚æ•°
**观察结果：**当这两个å‚数互为相å数，å³ç›¸åŠ 为零，å¯ä»¥å®žçŽ°æ•´ä¸ªå…ƒç´ 的旋转。
<img src="/assets/img/00096.png">
ä½†æ˜¯è¿™æ ·çš„æ—‹è½¬ä¸æ˜¯æˆ‘们è¦çš„ç»“æžœï¼Œå› ä¸ºçŸ©å½¢æ”¹å˜äº†å°ºå¯¸ï¼Œé‚£è¦æ€Žä¹ˆä¿æŒåŽŸå§‹å°ºå¯¸å‘¢ï¼Ÿä¿ºä¸çŸ¥é“，先瞎JB旋转45°åšä¸ªå®žä¾‹ï¼Œè‚‰çœ¼è§‚察一下。
<img src="/assets/img/00097.png">
å†æ¬¡ååˆ†æ„šè ¢åœ°æŽå‡ºæˆ‘的度é‡è¡¡å·¥å…·ï¼
<img src="/assets/img/00098.jpg">
<table><tr><th>显示设备</th><td colspan="2">ipad mini显示器</td><td colspan="2">笔记本显示器</td><td colspan="2">24寸显示器</tr><tr><th>测é‡å¯¹è±¡</th><td>é•¿</td><td>宽</td><td>é•¿</td><td>宽</td><td>é•¿</td><td>宽</td></tr><tr><th>红色矩形</th><td>4.3cm</td><td>3.5cm</td><td>4cm</td><td>3cm</td><td>4.9cm</td><td>3.7cm</td></tr><tr><th>绿色矩形</th><td>6.1cm</td><td>4.95cm</td><td>5.7cm</td><td>4.2cm</td><td>6.9cm</td><td>5.2cm</td></tr><tr><th rowspan="2">我的è”想</th><td>4.3/6.1≈0.705</td><td>3.5/4.95≈0.707</td><td>4/5.7≈0.701</td><td>3/4.2≈0.714</td><td>4.9/6.9≈0.710</td><td>3.7/5.2≈0.711</td></tr><tr><td colspan="6">(0.705+0.707+0.701+0.714+0.710+0.711)/6=0.708≈0.707=<b>cos45°</b></td></tr></table>
我这一通分æžæ˜¯ä¸æ˜¯ç¨³å¦‚è€ç‹—
##### 实验3å°ç»“
â‘¡å‚æ•°=水平边界顺时针倾斜角度æ£åˆ‡å€¼ã€‚
â‘¢å‚æ•°=垂直边界逆时针倾斜角度æ£åˆ‡å€¼ã€‚
实现倾斜，效果åŒ**skew()**函数。
å‡è®¾æ°´å¹³å’Œåž‚直边线åŒæ—¶å€¾æ–œX°（也就是两数互为相å数），åŒæ—¶ç¼©æ”¾å‚数①和④都ç‰äºŽcosX°，效果åŒ**rotate()**函数。
<h4 id="激情实践"><a href="#激情实践" class="headerlink" title="激情实践"></a>激情实践</h4><p>分æžå®Œå…个å‚æ•°ï¼Œä½ æ˜¯ä¸æ˜¯è§‰å¾—我在扯淡，那么，æ¥ï¼Œè¯•ä¸€ä¸‹ã€‚<br>效果è¦æ±‚：å¤å¤ä»Žç”»é¢å·¦ä¸‹è§’ä½ç§»åˆ°ç”»é¢å³ä¸Šè§’，并缩å°æˆä¸€é¢—å°æ˜Ÿæ˜Ÿï¼Œè¿‡ç¨‹ä¸è¿›è¡Œå¤šåœˆæ—‹è½¬ï¼Œåˆ¶é€ 出动漫ä¸è¢«ä¸€æ‹³K到外太空的效果。<br>实践æ¥éª¤ï¼š<br>1ã€æ”¶é›†ç´ æ图片：å¤å¤ã€è“天ã€å°æ˜Ÿæ˜Ÿã€‚<br>2ã€æ•´ç†æ€è·¯ï¼šé¦–先，设置ä½ç§»å‚数，算好å³ä¸Šè§’çš„åƒç´ ä½ç½®ï¼›å…¶æ¬¡ï¼Œç¼©æ”¾åˆ°0.01ï¼›å†æ¬¡ï¼Œæ¥ä¸ª18圈å§ã€‚<br>3ã€æ¸å˜è®¾ç½®ï¼šè®¾ç½®transition属性好方便观察å˜åŒ–过程。</p>
<h4 id="实验总结"><a href="#实验总结" class="headerlink" title="实验总结"></a>实验总结</h4><p>实验åšå®Œï¼Œæˆ‘们æ¥æ€»ç»“一下：<br>matrix(1,0,0,1,0,0)，matrix(â‘ ,â‘¡,â‘¢,â‘£,⑤,â‘¥)</p>
<table><tr><td>å‚æ•°</td><td>åˆå§‹å€¼</td><td>å˜å½¢èµ·ç‚¹</td><td>æ•°æ®ç±»åž‹</td><td>å‚æ•°</td></tr><tr><td>â‘ </td><td>1</td><td>ä¸å¿ƒç‚¹</td><td>å€æ•°</td><td>å…ƒç´ æ°´å¹³æ–¹å‘缩放的å€æ•°</td></tr><tr><td>â‘¡</td><td>0</td><td>ä¸å¿ƒç‚¹</td><td>æ£åˆ‡å€¼</td><td>å…ƒç´ æ°´å¹³è¾¹ç•Œé¡ºæ—¶é’ˆå€¾æ–œè§’åº¦çš„æ£åˆ‡å€¼</td></tr><tr><td>â‘¢</td><td>0</td><td>ä¸å¿ƒç‚¹</td><td>æ£åˆ‡å€¼</td><td>å…ƒç´ åž‚ç›´è¾¹ç•Œé€†æ—¶é’ˆå€¾æ–œè§’åº¦çš„æ£åˆ‡å€¼</td></tr><tr><td>â‘£</td><td>1</td><td>ä¸å¿ƒç‚¹</td><td>å€æ•°</td><td>å…ƒç´ åž‚ç›´æ–¹å‘缩放的å€æ•°</td></tr><tr><td>⑤</td><td>0</td><td>左上角</td><td>åƒç´ 值</td><td>å…ƒç´ æ°´å¹³æ–¹å‘ä½ç§»çš„åƒç´ 值</td></tr><tr><td>â‘¥</td><td>0</td><td>左上角</td><td>åƒç´ 值</td><td>å…ƒç´ åž‚ç›´æ–¹å‘ä½ç§»çš„åƒç´ 值</td></tr></table>
<p>è‹¥è¦å®žçŽ°ä½ç§»æ•ˆæžœï¼Œmatrix(1,0,0,1,x,y)ï¼›<br>è‹¥è¦å®žçŽ°ç¼©æ”¾æ•ˆæžœï¼Œmatrix(x,0,0,y,0,0)ï¼›<br>è‹¥è¦å®žçŽ°å€¾æ–œæ•ˆæžœï¼Œmatrix(1,tanA,tanB,1,0,0)ï¼›<br>è‹¥è¦å®žçŽ°æ—‹è½¬æ•ˆæžœï¼Œmatrix(cosA,sinA,-sinA,cosA,0,0)ï¼›</p>
<h3 id="å‘æ•£æ€ç»´"><a href="#å‘æ•£æ€ç»´" class="headerlink" title="å‘æ•£æ€ç»´"></a>å‘æ•£æ€ç»´</h3><h4 id="matrix-å˜åœ¨çš„æ„义是什么？"><a href="#matrix-å˜åœ¨çš„æ„义是什么？" class="headerlink" title="matrix()å˜åœ¨çš„æ„义是什么？"></a>matrix()å˜åœ¨çš„æ„义是什么？</h4><p>我们已ç»æœ‰äº†translate()ã€scale()ã€skew()å’Œrotate()è¿™æ ·çš„å˜å½¢å‡½æ•°å¯ä»¥å®žçŽ°æˆ‘们è¦çš„效果，为什么还è¦å¦ä¹ matrix()这么晦涩难懂的函数？<br>首先，for 记性差的朋å‹ï¼Œè®°ä¸€ä¸ªmatrixå•è¯ï¼Œè¿˜æ˜¯æ¯”记四个英è¯å•è¯è¦ç®€å•çš„多；<br>其次，for 想显摆的朋å‹ï¼Œä¼šçŸ©é˜µå‡½æ•°å¥½åƒæ˜¯æ˜¾å¾—牛掰一点点；<br>最åŽï¼Œfor 喜欢抄近é“的朋å‹ï¼Œå¸Œæœ›è§£å†³é—®é¢˜çš„时候，使用最çŸè·¯å¾„，越çŸè¶Šå¥½ï¼Œå½“然，å‰ææ˜¯ä½ éœ€è¦ç»å¸¸ç”¨åˆ°è¿™äº›åŠŸèƒ½ã€‚</p>
<h4 id="å˜å½¢å‡½æ•°æ··å†™ç‰äºŽmatrix-么？"><a href="#å˜å½¢å‡½æ•°æ··å†™ç‰äºŽmatrix-么？" class="headerlink" title="å˜å½¢å‡½æ•°æ··å†™ç‰äºŽmatrix()么？"></a>å˜å½¢å‡½æ•°æ··å†™ç‰äºŽmatrix()么？</h4><p>已知transform的函数们是å¯ä»¥å†™åœ¨ä¸€èµ·çš„，那么混写的transformç‰åŒäºŽmatrix()么？好å§ï¼Œæˆ‘ä»¥ä¸ºæ˜¯ä¸€æ ·çš„ï¼Œå®žæ“了一下，呵呵。æ¤å¤„åº”è¯¥æœ‰ä¸€ç¯‡æ–‡ç« ï¼Œ<a href="/geek/matrix/">《å˜å½¢å‡½æ•°æ··å†™ä¸ç‰äºŽmatrix()》</a>。</p>
<h5 id="房贷房"><a href="#房贷房" class="headerlink" title="房贷房"></a>房贷房</h5><h4 id="怎么ç†è§£ä¸‰ç»´çŸ©é˜µå‡½æ•°matrix3d-？"><a href="#怎么ç†è§£ä¸‰ç»´çŸ©é˜µå‡½æ•°matrix3d-？" class="headerlink" title="怎么ç†è§£ä¸‰ç»´çŸ©é˜µå‡½æ•°matrix3d()？"></a>怎么ç†è§£ä¸‰ç»´çŸ©é˜µå‡½æ•°matrix3d()？</h4><p>进阶版<a href="/geek/matrix3d/">《用猴åæ€ç»´ç†è§£matrix3d()》</a>，了解一下。</p>
<h3 id="我的想法"><a href="#我的想法" class="headerlink" title="我的想法"></a>我的想法</h3><p>为了ç†è§£matrix()ï¼Œæˆ‘åœ¨ç½‘ä¸Šæ‰¾äº†ä¸¤ä¸‰ç¯‡æ–‡ç« è¿›è¡Œå‚考，都是以矩阵乘法æ¥è§£é‡Šmatrix()，我是看ä¸æ‡‚的，在这些算å¼é¢å‰ï¼Œæˆ‘å°±åƒä¸€åªåˆšä»Žå±±é‡Œå‡ºæ¥çš„猴å，瞅ç€å¥½æ–°é²œå¥½é«˜çº§å“Ÿã€‚当我把他们的结论放进代ç ä¸è¿è¡Œï¼Œå´æ— 一æ£ç¡®ï¼Œæ˜¯çš„，一个都ä¸å¯¹ï¼è¿™åˆ°åº•æ˜¯å“ªé‡Œå‡ºäº†é—®é¢˜ï¼Ÿæœ‰æ—¶é—´æŠŠé‚£ä¹ˆå¤æ‚çš„ç®—å¼ç®—清楚，没时间建个html实æ“一下？程åºå‘˜ä»¬å¯¹è‡ªå·±çš„智商是ä¸æ˜¯è¿‡äºŽè‡ªä¿¡äº†ç‚¹ï¼Ÿâ€œçŒ´åæ€ç»´â€æ˜¯æˆ‘自嘲且自谦的说法，我喜欢简å•ç²—暴地从结果å推过程的æ€ç»´æ–¹å¼ï¼Œæˆ‘认为明确了解目的地，æ‰èƒ½æŽ¨ç†å‡ºæœ€çŸè·¯å¾„。我们æ€è€ƒï¼Œæ˜¯ä¸ºäº†è§£å†³é—®é¢˜ï¼Œæ˜¯ä¸ºäº†èƒ½å¤ŸæŠŠå¤æ‚的东西进行简å•çš„输出，而ä¸åªæ˜¯ä¸ºäº†æ˜¾å¾—比别人èªæ˜Žç‚¹ï¼Œä¸æ˜¯ä¹ˆï¼Ÿ</p>
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