一、前言
2022年圣诞节到来啦，很高兴这次我们又能一起度过~
今年的圣诞节为大家分享用MAXScript脚本编写圣诞树建模插件的技术创意，喜欢的同学别忘记在下面点个赞！
二、创意名
一键圣诞树插件
三、效果展示
四、实现步骤
1.制作圣诞树的设计稿（模型）。
2.功能参数设定。在这个插件设计中我们设定两部分模块：参数和关于。
主要功能是“参数”部份，有4个简单的功能参数。
a.圣诞树的长度
b.圣诞树的宽度
c.圣诞树的高度
d.平滑组开关
“关于”部分显示版本及作者信息等。
我们将把它制作成3dMax命令面板中的标准命令，而不是浮动窗口。
3.根据功能参数设计插件界面：
4.代码编写。代码编写可以分两步进行。
第1步：插件界面的代码实现。
第2步：插件功能的代码实现。
5. 代码的调试和修改。
五、编码实现
第一步：编写插件要出现在3dMax命令面板中的位置。
plugin simpleObject ChristmasTree name:"ChristmasTree" category:"Christmas" classID:#(1102622742,1376421417)以上代码定义了插件的名称、分类、ID等信息。
第二步：界面的代码实现：
rollout params "Parameters" ( spinner length "Length" range:[0,10000,49.4051] align:#right fieldwidth:60 spinner width "Width" range:[0,10000,49.4051] align:#right fieldwidth:60 spinner height "Height" range:[0,10000,84.37] align:#right fieldwidth:60 checkbox check_smooth "Smoothing Groups" )以上代码定义一个“Parameters”卷展栏，并在卷展栏内定义了四个参数的输入界面。
“About”卷展栏定义方法同上。
第三步：功能代码编写。
圣诞树模型的实现，我们是通过脚本还原设计稿中圣诞树的模型来实现。
首先采集圣诞树模型数据：
-- Vertex data (165 verts)----------------------- vp = #( [10,0,0], [9.2388,3.82683,1.5], [7.07107,7.07107,0], [3.82683,9.2388,1.5], [-4.37114e-07,10,0], [-3.82684,9.2388,1.5], [-7.07107,7.07107,0], [-9.2388,3.82683,1.5], [-10,1.50996e-06,0], [-9.2388,-3.82683,1.5], ......根据数据还原模型：
-- Create mesh for buildMesh setMesh mesh vertices:vp faces:fl调节长宽高参数功能：
-- scaling vertex positions for i = 1 to 165 do ( oldpos = vp[i] vp[i] = point3 (oldpos.x * (width/49.4051)) (oldpos.y * (length/49.4051)) (oldpos.z * (height/84.37)) )平滑组功能实现：
for i = 1 to 308 do ( if not use_smooth then setFaceSmoothGroup mesh i fs[i] )最后完整代码：
plugin simpleObject ChristmasTree name:"ChristmasTree" category:"Christmas" classID:#(1102622742,1376421417) ( parameters main rollout:params ( length type:#float ui:length default:49.4051 width type:#float ui:width default:49.4051 height type:#float ui:height default:84.37 use_smooth type:#boolean ui:check_smooth default:false ) rollout params "Parameters" ( spinner length "Length" range:[0,10000,49.4051] align:#right fieldwidth:60 spinner width "Width" range:[0,10000,49.4051] align:#right fieldwidth:60 spinner height "Height" range:[0,10000,84.37] align:#right fieldwidth:60 checkbox check_smooth "Smoothing Groups" ) rollout aboutRO "About" ( label l1 "ChristmasTree" label l2 "v1.0.0" label l3 "WeChat:fengqicongrong" ) on buildMesh do ( -- Vertex data (165 verts)----------------------- vp = #( [10,0,0], [9.2388,3.82683,1.5], [7.07107,7.07107,0], [3.82683,9.2388,1.5], [-4.37114e-07,10,0], [-3.82684,9.2388,1.5], [-7.07107,7.07107,0], [-9.2388,3.82683,1.5], [-10,1.50996e-06,0], [-9.2388,-3.82683,1.5], [-7.07107,-7.07107,0], [-3.82684,-9.2388,1.5], [1.19249e-07,-10,0], [3.82684,-9.23879,1.5], [7.07107,-7.07107,0], [9.2388,-3.82683,1.5], [0,0,16.6343], [7.03397,2.91357,1.5], [7.61351,-3.73761e-07,1.5], [7.03397,-2.91356,1.5], [5.38357,-5.38356,1.5], [2.91357,-7.03397,1.5], [-1.52687e-07,-7.61351,1.5], [-2.91357,-7.03397,1.5], [-5.38357,-5.38356,1.5], [-7.03397,-2.91356,1.5], [-7.61351,1.1362e-06,1.5], [-7.03397,2.91357,1.5], [-5.38357,5.38357,1.5], [-2.91357,7.03397,1.5], [-4.37114e-07,7.61351,1.5], [2.91356,7.03397,1.5], [5.38357,5.38357,1.5], [14.6139,6.05326,-15], [15.8179,2.89962e-07,-13], [14.6139,-6.05326,-15], [11.185,-11.185,-13], [6.05327,-14.6139,-15], [9.69169e-07,-15.8179,-13], [-6.05327,-14.6139,-15], [-11.185,-11.185,-13], [-14.6139,-6.05326,-15], [-15.8179,1.92457e-06,-13], [-14.6139,6.05326,-15], [-11.185,11.185,-13], [-6.05327,14.6139,-15], [-4.37114e-07,15.8179,-13], [6.05326,14.6139,-15], [11.185,11.185,-13], [12.1071,5.01491,-13], [13.1046,0,-13], [12.1071,-5.01491,-13], [9.26635,-9.26634,-13], [5.01491,-12.1071,-13], [7.21824e-07,-13.1046,-13], [-5.01491,-12.1071,-13], [-9.26635,-9.26635,-13], [-12.1071,-5.01491,-13], [-13.1046,1.92457e-06,-13], [-12.1071,5.01491,-13], [-9.26635,9.26635,-13], [-5.01491,12.1071,-13], [-2.30993e-07,13.1046,-13], [5.01491,12.1071,-13], [9.26635,9.26635,-13], [22.0224,9.12197,-32.146], [23.8369,1.18779e-06,-34.646], [22.0224,-9.12196,-32.146], [16.8552,-16.8552,-34.646], [9.12197,-22.0224,-32.146], [1.95184e-06,-23.8369,-34.646], [-9.12197,-22.0224,-32.146], [-16.8552,-16.8552,-34.646], [-22.0224,-9.12197,-32.146], [-23.8369,2.26918e-06,-34.646], [-22.0224,9.12197,-32.146], [-16.8552,16.8552,-34.646], [-9.12197,22.0224,-32.146], [-7.8726e-07,23.8369,-34.646], [9.12197,22.0224,-32.146], [16.8552,16.8552,-34.646], [16.2695,6.73906,-32.146], [17.61,5.3289e-07,-32.146], [16.2695,-6.73906,-32.146], [12.4522,-12.4522,-32.146], [6.73906,-16.2695,-32.146], [1.24133e-06,-17.61,-32.146], [-6.73906,-16.2695,-32.146], [-12.4522,-12.4522,-32.146], [-16.2695,-6.73906,-32.146], [-17.61,1.78059e-06,-32.146], [-16.2695,6.73906,-32.146], [-12.4522,12.4522,-32.146], [-6.73906,16.2695,-32.146], [-4.20499e-07,17.61,-32.146], [6.73906,16.2695,-32.146], [12.4522,12.4522,-32.146], [22.8222,9.45326,-45.2459], [24.7026,1.87139e-06,-42.2459], [22.8222,-9.45326,-45.2459], [17.4674,-17.4673,-42.2459], [9.45327,-22.8222,-45.2459], [1.42615e-06,-24.7026,-42.2459], [-9.45327,-22.8222,-45.2459], [-17.4674,-17.4673,-42.2459], [-22.8222,-9.45326,-45.2459], [-24.7026,2.57905e-06,-42.2459], [-22.8222,9.45326,-45.2459], [-17.4674,17.4674,-42.2459], [-9.45327,22.8222,-45.2459], [-1.24236e-06,24.7026,-42.2459], [9.45326,22.8222,-45.2459], [17.4674,17.4674,-42.2459], [6.71316,2.78068,-42.2459], [7.26627,-5.79391e-07,-42.2459], [6.71316,-2.78068,-42.2459], [5.13803,-5.13803,-42.2459], [2.78068,-6.71316,-42.2459], [1.39228e-06,-7.26627,-42.2459], [-2.78068,-6.71316,-42.2459], [-5.13803,-5.13803,-42.2459], [-6.71316,-2.78068,-42.2459], [-7.26627,1.40376e-06,-42.2459], [-6.71316,2.78068,-42.2459], [-5.13803,5.13803,-42.2459], [-2.78068,6.71316,-42.2459], [1.86788e-06,7.26627,-42.2459], [2.78068,6.71316,-42.2459], [5.13803,5.13803,-42.2459], [8.44957,3.49993,-58.4307], [9.14575,0,-58.4307], [8.44957,-3.49992,-58.4307], [6.46702,-6.46702,-58.4307], [3.49993,-8.44957,-58.4307], [1.53506e-06,-9.14575,-58.4307], [-3.49993,-8.44957,-58.4307], [-6.46702,-6.46702,-58.4307], [-8.44957,-3.49992,-58.4307], [-9.14575,1.59201e-06,-58.4307], [-8.44957,3.49993,-58.4307], [-6.46702,6.46702,-58.4307], [-3.49993,8.44957,-58.4307], [1.66799e-06,9.14575,-58.4307], [3.49992,8.44957,-58.4307], [6.46702,6.46702,-58.4307], [3.80423,0.999998,23.1754], [1.17557,0.999998,23.5574], [1.95106e-06,0.999997,25.9393], [-1.17557,0.999998,23.5574], [-3.80422,0.999998,23.1754], [-1.90211,0.999998,21.3213], [-2.35114,0.999998,18.7032], [2.60671e-06,0.999998,19.9393], [2.35114,0.999999,18.7032], [1.90211,0.999998,21.3213], [3.80423,-1,23.1754], [1.17557,-1,23.5574], [2.05175e-06,-1,25.9393], [-1.17557,-1,23.5574], [-3.80422,-1,23.1754], [-1.90211,-1,21.3213], [-2.35114,-1,18.7032], [2.7074e-06,-1,19.9393], [2.35114,-1,18.7032], [1.90211,-1,21.3213]) -- Face data (308 faces) --------------------------- fl = #( [1,2,17], [2,3,17], [3,4,17], [4,5,17], [5,6,17], [6,7,17], [7,8,17], [8,9,17], [9,10,17], [10,11,17], [11,12,17], [12,13,17], [13,14,17], [14,15,17], [15,16,17], [16,1,17], [19,18,2], [2,1,19], [19,1,16], [16,20,19], [21,20,16], [16,15,21], [21,15,14], [14,22,21], [23,22,14], [14,13,23], [23,13,12], [12,24,23], [25,24,12], [12,11,25], [25,11,10], [10,26,25], [27,26,10], [10,9,27], [27,9,8], [8,28,27], [29,28,8], [8,7,29], [29,7,6], [6,30,29], [31,30,6], [6,5,31], [31,5,4], [4,32,31], [33,32,4], [4,3,33], [33,3,2], [2,18,33], [34,18,19], [19,35,34], [36,35,19], [19,20,36], [36,20,21], [21,37,36], [38,37,21], [21,22,38], [38,22,23], [23,39,38], [40,39,23], [23,24,40], [40,24,25], [25,41,40], [42,41,25], [25,26,42], [42,26,27], [27,43,42], [44,43,27], [27,28,44], [44,28,29], [29,45,44], [46,45,29], [29,30,46], [46,30,31], [31,47,46], [48,47,31], [31,32,48], [48,32,33], [33,49,48], [34,49,33], [33,18,34], [50,34,35], [35,51,50], [52,51,35], [35,36,52], [52,36,37], [37,53,52], [54,38,39], [39,55,54], [56,55,39], [39,40,56], [56,40,41], [41,57,56], [58,57,41], [41,42,58], [58,42,43], [43,59,58], [60,59,43], [43,44,60], [60,44,45], [45,61,60], [62,61,45], [45,46,62], [62,46,47], [47,63,62], [64,63,47], [47,48,64], [64,48,49], [49,65,64], [50,65,49], [49,34,50], [67,66,50], [50,51,67], [67,51,52], [52,68,67], [69,68,52], [52,53,69], [69,53,54], [54,70,69], [71,70,54], [54,55,71], [71,55,56], [56,72,71], [73,72,56], [56,57,73], [73,57,58], [58,74,73], [75,74,58], [58,59,75], [75,59,60], [60,76,75], [77,76,60], [60,61,77], [77,61,62], [62,78,77], [79,78,62], [62,63,79], [79,63,64], [64,80,79], [81,80,64], [64,65,81], [81,65,50], [50,66,81], [83,82,66], [66,67,83], [83,67,68], [68,84,83], [85,84,68], [68,69,85], [85,69,70], [70,86,85], [87,86,70], [70,71,87], [87,71,72], [72,88,87], [89,88,72], [72,73,89], [89,73,74], [74,90,89], [91,90,74], [74,75,91], [91,75,76], [76,92,91], [93,92,76], [76,77,93], [93,77,78], [78,94,93], [95,94,78], [78,79,95], [95,79,80], [80,96,95], [97,96,80], [80,81,97], [97,81,66], [66,82,97], [98,82,83], [83,99,98], [100,99,83], [83,84,100], [100,84,85], [85,101,100], [102,101,85], [85,86,102], [102,86,87], [87,103,102], [104,103,87], [87,88,104], [104,88,89], [89,105,104], [106,105,89], [89,90,106], [106,90,91], [91,107,106], [108,107,91], [91,92,108], [108,92,93], [93,109,108], [110,109,93], [93,94,110], [110,94,95], [95,111,110], [112,111,95], [95,96,112], [112,96,97], [97,113,112], [98,113,97], [97,82,98], [114,98,99], [99,115,114], [116,115,99], [99,100,116], [116,100,101], [101,117,116], [118,117,101], [101,102,118], [118,102,103], [103,119,118], [120,119,103], [103,104,120], [120,104,105], [105,121,120], [122,121,105], [105,106,122], [122,106,107], [107,123,122], [124,123,107], [107,108,124], [124,108,109], [109,125,124], [126,125,109], [109,110,126], [126,110,111], [111,127,126], [111,112,128], [128,127,111], [128,112,113], [113,129,128], [114,129,113], [113,98,114], [131,130,114], [114,115,131], [132,131,115], [115,116,132], [133,132,116], [116,117,133], [134,133,117], [117,118,134], [135,134,118], [118,119,135], [136,135,119], [119,120,136], [137,136,120], [120,121,137], [138,137,121], [121,122,138], [139,138,122], [122,123,139], [140,139,123], [123,124,140], [141,140,124], [124,125,141], [142,141,125], [125,126,142], [143,142,126], [126,127,143], [144,143,127], [127,128,144], [145,144,128], [128,129,145], [130,145,129], [129,114,130], [54,53,37], [37,38,54], [146,147,157], [146,157,156], [147,148,158], [147,158,157], [148,149,159], [148,159,158], [149,150,160], [149,160,159], [150,151,161], [150,161,160], [151,152,162], [151,162,161], [152,153,163], [152,163,162], [153,154,164], [153,164,163], [154,155,165], [154,165,164], [155,146,156], [155,156,165], [153,155,154], [149,151,150], [155,147,146], [151,153,152], [147,149,148], [149,153,151], [147,153,149], [155,153,147], [163,164,165], [159,160,161], [165,156,157], [161,162,163], [157,158,159], [159,161,163], [157,159,163], [165,157,163]) -- Smoothing data (308) --------------------------- fs = #( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16) -- scaling vertex positions for i = 1 to 165 do ( oldpos = vp[i] vp[i] = point3 (oldpos.x * (width/49.4051)) (oldpos.y * (length/49.4051)) (oldpos.z * (height/84.37)) ) -- Create mesh for buildMesh setMesh mesh vertices:vp faces:fl -- Apply additional face data for i = 1 to 308 do ( if not use_smooth then setFaceSmoothGroup mesh i fs[i] ) ) -- end on buildmesh tool create prompt:"Click and drag to begin creation process. Hold Ctrl for original object proportions." ( on mousePoint click do ( case click of ( 1: nodeTM.translation = gridPoint 3: #stop ) ) on mouseMove click do ( case click of ( 2: ( if ctrlKey then ( width = abs gridDist.x length = abs gridDist.y ) else ( old_width = 49.4051 width = sqrt ((gridDist.y)^2+(gridDist.x)^2) length = (width/old_width)*49.4051 height = (width/old_width)*84.37 ) ) 3: if ctrlKey then height = abs gridDist.z else #stop ) -- end on case ) -- end on mouseMove ) -- end create tool ) -- end Plug-O-Matic plugin测试使用方法：
复制完整代码到文本编辑器，保存为.ms文件，将.ms文件拖动到3dMax窗口执行，然后，点击3dMax命令面板->创建->几何体，从下拉列表中可以看到“Christmas”分类，选择后，可以看到“ChristmasTree”命令按钮，按下后，在视口中单击或按下拖动鼠标，从而创建圣诞树模型。
选择已创建的圣诞树模型，切换到“修改”面板，可以通过参数面板，重设选择的圣诞树的参数值。
结束语：
一个简单的MAXScript脚本编写的圣诞树建模插件就完成了，大家如果喜欢别忘记点赞哟！
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