Circular primitive editor complete

replaced overloads with a new 'xyz' function

replaced GLRotationMatrix with QMatrix4x4

replaced the Matrix class with QMatrix4x4

some rework in description

fixed bugs regarding circular primitives

refactored LDPolygon

added the disc and disc negative to the circular primitive type

changed LDCylinder to LDCircularPrimitive and moved circles to it

cleaned up LDColor constructors

show the color index in the color button

separated the color button into a new widget

fixed cylinder rendering

changed rotation matrix to quaternion in GLRenderer

fix compiler warnings

added work done on cylinders

added draw plane feature (doesn't work with circle draw quite right yet)

refactored signal blocking

fixed that scaling factors could be negative

added a doublespinbox variant that uses "." as the decimal point and omits trailing zeros

added scaling vector editing into the subfile editing dialog

added vertex rendering

some fixes

fixed vertex cache spontaneously clearing

refactored the quick color toolbar

removed dead code

added a status bar and moved printed messages there

removed dead code

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mercurial