In case anybody is interested: I adapted the adjustPrimLength from groom.h to work in the other direction: “`void adjustPrimLengthInv(const int geo, prim; const float currentlength, targetlength) { float diff = targetlength – currentlength; int points[] = primpoints(geo, prim); if(diff < 0) { vector lastpos = 0; float length = 0; int numpt = len(points);\n for(int idx = numpt-1; idx >= 0; idx–) { int pt = points[idx]; vector pos = point(geo, “P”, pt); if(idx < numpt-1) { float seglength = distance(pos, lastpos);\n if(length+seglength > targetlength) { float frac = (targetlength-length)\/seglength;
\n vector newpos = lerp(lastpos, pos, frac); setpointattrib(0, ‘P’, pt, newpos, ‘set’); for(int i=idx-1; i>=0; i–) { removepoint(geo, points[i]); }
\n break; }
\n length += seglength; }
\n lastpos = pos; } } }“`<\/p>\n
So between the normal version and this one I can scale polylines smoothly from both sides.<\/p>\n
Oh and I removed the extension part, I never want the lines to become longer. So below is the modified and simplified standard version:<\/p>\n
“`void adjustPrimLength(const int geo, prim; const float currentlength, targetlength) { float diff = targetlength – currentlength; int points[] = primpoints(geo, prim); if(diff < 0) { vector lastpos = 0; float length = 0;\n foreach(int idx; int pt; points) { vector pos = point(geo, \"P\", pt); if(idx > 0) { float seglength = distance(pos, lastpos); Just put it in a primitive wrangle, grab your currentlength with: `float currentlength = primintrinsic(0, ‘measuredperimeter’, @primnum);` and cut away… \ud83d\ude42<\/p>\n Oh and this is in actual lengths, so if you want to cut away half your line, targetlength would be currentlength * 0.5…<\/p>\n I love doing all this in a wrangle since it’s more flexible than carve<\/p>\n","protected":false},"excerpt":{"rendered":" In case anybody is interested: I adapted the adjustPrimLength from groom.h to work in the other direction: “`void adjustPrimLengthInv(const int geo, prim; const float currentlength, targetlength) { float diff = targetlength – currentlength; int points[] = primpoints(geo, prim); if(diff < 0) { vector lastpos = 0; float length = 0; int numpt = len(points); for(int … Continue reading Archived post by Thomas Helzle<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts\/429"}],"collection":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/comments?post=429"}],"version-history":[{"count":0,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts\/429\/revisions"}],"wp:attachment":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/media?parent=429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/categories?post=429"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/tags?post=429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n if(length+seglength > targetlength) { float frac = (targetlength-length)\/seglength;
\n vector newpos = lerp(lastpos, pos, frac);
\n int ptnum = addpoint(geo, newpos);
\n for(int i=idx; i