diff options
| -rwxr-xr-x | share/extensions/dxf_input.py | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/share/extensions/dxf_input.py b/share/extensions/dxf_input.py index 9fa9f2769..94f80aa84 100755 --- a/share/extensions/dxf_input.py +++ b/share/extensions/dxf_input.py @@ -80,24 +80,26 @@ def export_LINE(): def export_SPLINE(): # see : http://www.mactech.com/articles/develop/issue_25/schneider.html # mandatory group codes : (10, 20, 40, 70) (x[], y[], knots[], flags) - if vals[groups['70']] and not (vals[groups['70']][0] & 3) and len(vals[groups['10']]) == len(vals[groups['20']]) and vals[groups['10']] and vals[groups['20']] and vals[groups['40']]: + if vals[groups['70']] and len(vals[groups['10']]) == len(vals[groups['20']]) and vals[groups['10']] and vals[groups['20']] and vals[groups['40']]: knots = len(vals[groups['40']]) ctrls = len(vals[groups['10']]) if ctrls > 3 and knots == ctrls + 4: # cubic if ctrls > 4: for i in range (knots - 5, 3, -1): - a0 = (vals[groups['40']][i] - vals[groups['40']][i-2])/(vals[groups['40']][i+1] - vals[groups['40']][i-2]) - a1 = (vals[groups['40']][i] - vals[groups['40']][i-1])/(vals[groups['40']][i+2] - vals[groups['40']][i-1]) - vals[groups['10']].insert(i-1, (1.0 - a1)*vals[groups['10']][i-2] + a1*vals[groups['10']][i-1]) - vals[groups['20']].insert(i-1, (1.0 - a1)*vals[groups['20']][i-2] + a1*vals[groups['20']][i-1]) - vals[groups['10']][i-2] = (1.0 - a0)*vals[groups['10']][i-3] + a0*vals[groups['10']][i-2] - vals[groups['20']][i-2] = (1.0 - a0)*vals[groups['20']][i-3] + a0*vals[groups['20']][i-2] - vals[groups['40']].insert(i, vals[groups['40']][i]) + if vals[groups['40']][i] != vals[groups['40']][i-1] and vals[groups['40']][i] != vals[groups['40']][i+1]: + a0 = (vals[groups['40']][i] - vals[groups['40']][i-2])/(vals[groups['40']][i+1] - vals[groups['40']][i-2]) + a1 = (vals[groups['40']][i] - vals[groups['40']][i-1])/(vals[groups['40']][i+2] - vals[groups['40']][i-1]) + vals[groups['10']].insert(i-1, (1.0 - a1)*vals[groups['10']][i-2] + a1*vals[groups['10']][i-1]) + vals[groups['20']].insert(i-1, (1.0 - a1)*vals[groups['20']][i-2] + a1*vals[groups['20']][i-1]) + vals[groups['10']][i-2] = (1.0 - a0)*vals[groups['10']][i-3] + a0*vals[groups['10']][i-2] + vals[groups['20']][i-2] = (1.0 - a0)*vals[groups['20']][i-3] + a0*vals[groups['20']][i-2] + vals[groups['40']].insert(i, vals[groups['40']][i]) knots = len(vals[groups['40']]) for i in range (knots - 6, 3, -2): - a1 = (vals[groups['40']][i] - vals[groups['40']][i-1])/(vals[groups['40']][i+2] - vals[groups['40']][i-1]) - vals[groups['10']].insert(i-1, (1.0 - a1)*vals[groups['10']][i-2] + a1*vals[groups['10']][i-1]) - vals[groups['20']].insert(i-1, (1.0 - a1)*vals[groups['20']][i-2] + a1*vals[groups['20']][i-1]) + if vals[groups['40']][i] != vals[groups['40']][i+2] and vals[groups['40']][i-1] != vals[groups['40']][i+1] and vals[groups['40']][i-2] != vals[groups['40']][i]: + a1 = (vals[groups['40']][i] - vals[groups['40']][i-1])/(vals[groups['40']][i+2] - vals[groups['40']][i-1]) + vals[groups['10']].insert(i-1, (1.0 - a1)*vals[groups['10']][i-2] + a1*vals[groups['10']][i-1]) + vals[groups['20']].insert(i-1, (1.0 - a1)*vals[groups['20']][i-2] + a1*vals[groups['20']][i-1]) ctrls = len(vals[groups['10']]) path = 'M %f,%f' % (vals[groups['10']][0], vals[groups['20']][0]) for i in range (0, (ctrls - 1)/3): |