{"id":"a03","course":"beginners-class","section":"basics","order":3,"code":"A03","title":"CHOP 時間動畫、參數控制","kind":"video","durationSec":2509,"duration":"41:49","freePreview":true,"families":["CHOP","TOP"],"loopwiseLectureId":"b69f891e","hasNotes":true,"notes":{"toc":[{"id":"s-1","text":"這個單元在做什麼","level":2},{"id":"s-2","text":"CHOP 是什麼：綠色的節點管數據","level":2},{"id":"s-3","text":"Constant：一組數字控制好幾個視覺","level":2},{"id":"s-4","text":"LFO 與 Math：先整理訊號，再綁上去","level":2},{"id":"s-5","text":"Noise 與 Rename：讓花亂數旋轉","level":2},{"id":"s-6","text":"Mouse In：用滑鼠移動花、換顏色","level":2},{"id":"s-7","text":"Select 與 Switch：點一下換一朵花","level":2},{"id":"s-8","text":"Filter 與 Lag：讓變化慢慢發生","level":2},{"id":"s-9","text":"Keyboard In：現場按鍵切換特效","level":2},{"id":"s-10","text":"Count：點一下，貓就變大","level":2},{"id":"s-11","text":"Speed：踩油門，數字一直累積","level":2},{"id":"s-12","text":"Timer：按下按鈕，魚游過去","level":2},{"id":"s-13","text":"Animation：自己畫動作曲線","level":2},{"id":"s-14","text":"時間軸：同一組參數，渲染出一樣的影片","level":2},{"id":"s-15","text":"MIDI In：接上實體控制器","level":2},{"id":"s-16","text":"常見問題","level":2},{"id":"s-17","text":"卡住的時候","level":2}],"segments":[{"html":"<h2 id=\"s-1\">這個單元在做什麼</h2>\n<p class=\"has-ts\"><span class=\"tsg\"><a class=\"ts\" href=\"#t=13\" data-t=\"13\" title=\"播放錄影 00:13\">00:13</a></span>在 TD 裡，只要牽涉到數據，不管是從外面輸入進來、隨著時間變化，還是好幾個訊號合在一起，都交給 CHOP 處理，也就是那些綠色的節點。</p>\n<p>這個單元從 CHOP 的分類開始，接著一個一個節點實際做。先用 <code class=\"op\" data-family=\"CHOP\">Constant CHOP</code> 把要控制的數字集中在一個地方，再用 <code class=\"op\" data-family=\"CHOP\">LFO CHOP</code>、<code class=\"op\" data-family=\"CHOP\">Noise CHOP</code> 讓數字自己動起來。然後是一連串小例子。用滑鼠移動一朵花，點一下換顏色、換一朵花。用鍵盤在馬賽克和發光之間切換。點一下，貓就變大一點，一邊還在轉圈。按下按鈕，一條魚從左邊游過去，後面拖著殘影。一根香蕉從時間軸的開頭播到結尾，剛好轉完一圈。最後接上 MIDI 控制器和打擊板。</p>\n<p class=\"has-ts\"><span class=\"tsg\"><a class=\"ts\" href=\"#t=2461\" data-t=\"2461\" title=\"播放錄影 41:01\">41:01</a></span>每個例子都是同一個做法：選出要的訊號，整理成想要的範圍，再套用到視覺上。哲宇說，熟悉這些之後，「你就已經熟悉了幾乎 TD 裡面所有的訊號源，以及硬體操作了」。</p>\n<aside class=\"callout callout-key\" aria-label=\"這個單元帶走\"><p class=\"callout-title\">這個單元帶走</p><ol>\n<li>CHOP 管 TD 裡所有的數據。名字裡有 In 的是外部輸入（麥克風、音檔、MIDI、滑鼠、鍵盤），<code class=\"op\" data-family=\"CHOP\">LFO CHOP</code>、<code class=\"op\" data-family=\"CHOP\">Noise CHOP</code>、<code class=\"op\" data-family=\"CHOP\">Pattern CHOP</code> 自己產生訊號，其他的負責處理。</li>\n<li>先把要控制的數字集中到 <code class=\"op\" data-family=\"CHOP\">Constant CHOP</code>，訊號處理完再指定給它，最後才綁到視覺上。流程清楚，一組數字還能同時控制好幾個視覺。</li>\n<li><code class=\"op\" data-family=\"CHOP\">Math CHOP</code> 換範圍、<code class=\"op\" data-family=\"CHOP\">Filter CHOP</code> 和 <code class=\"op\" data-family=\"CHOP\">Lag CHOP</code> 讓變化慢慢發生、<code class=\"op\" data-family=\"CHOP\">Rename CHOP</code> 幫頻道取看得懂的名字，幾乎每個例子都用得到。</li>\n<li><code class=\"op\" data-family=\"CHOP\">Count CHOP</code> 數次數、<code class=\"op\" data-family=\"CHOP\">Speed CHOP</code> 累積速度、<code class=\"op\" data-family=\"CHOP\">Timer CHOP</code> 從按下的那一刻開始計時、<code class=\"op\" data-family=\"COMP\">Animation COMP</code> 讓你自己畫動作曲線。</li>\n<li>跟著時間軸跑的動畫，參數一樣就能渲染出一模一樣的影片。東西不會動的時候，先看時間軸有沒有在播放。</li>\n</ol>\n</aside>"},{"locked":true,"id":"s-2","title":"CHOP 是什麼：綠色的節點管數據"},{"locked":true,"id":"s-3","title":"Constant：一組數字控制好幾個視覺"},{"locked":true,"id":"s-4","title":"LFO 與 Math：先整理訊號，再綁上去"},{"locked":true,"id":"s-5","title":"Noise 與 Rename：讓花亂數旋轉"},{"locked":true,"id":"s-6","title":"Mouse In：用滑鼠移動花、換顏色"},{"locked":true,"id":"s-7","title":"Select 與 Switch：點一下換一朵花"},{"locked":true,"id":"s-8","title":"Filter 與 Lag：讓變化慢慢發生"},{"locked":true,"id":"s-9","title":"Keyboard In：現場按鍵切換特效"},{"locked":true,"id":"s-10","title":"Count：點一下，貓就變大"},{"locked":true,"id":"s-11","title":"Speed：踩油門，數字一直累積"},{"locked":true,"id":"s-12","title":"Timer：按下按鈕，魚游過去"},{"locked":true,"id":"s-13","title":"Animation：自己畫動作曲線"},{"locked":true,"id":"s-14","title":"時間軸：同一組參數，渲染出一樣的影片"},{"locked":true,"id":"s-15","title":"MIDI In：接上實體控制器"},{"locked":true,"id":"s-16","title":"常見問題"},{"locked":true,"id":"s-17","title":"卡住的時候"}],"sections":17},"courseName":"TouchDesigner 入門必修課","buyUrl":"https://education.monolab.world/courses/beginners-class","sectionTitle":"基礎知識","prev":{"id":"a02","course":"beginners-class","section":"basics","order":2,"code":"A02","title":"TOP 基礎圖像處理與合成","kind":"video","durationSec":2464,"duration":"41:04","freePreview":false,"families":["TOP"]},"next":{"id":"a04","course":"beginners-class","section":"basics","order":4,"code":"A04","title":"音訊輸入、聲音視覺互動","kind":"video","durationSec":2651,"duration":"44:11","freePreview":false,"families":["CHOP","TOP"]}}