vb.net - Find Bounds of GDI+ Shape -

vb.net - Find Bounds of GDI+ Shape -

hi i'm trying rectangle surrounds shape drawn via gdi+ when pen thick.

this test code demo added mybase.load test out..

dim bmp new bitmap(500, 500) dim g graphics = graphics.fromimage(bmp) g.clear(color.transparent) g.smoothingmode = smoothingmode.highquality g.pixeloffsetmode = pixeloffsetmode.default ' setup matrix dim mat new matrix mat.translate(100, 100) g.transform = mat ' draw lines , fill dim gp new graphicspath gp.addlines({new point(50, 0), new point(100, 100), new point(0, 100)}) gp.closeallfigures() ' closes open path (ie bring together origin) g.fillpath(new solidbrush(color.beige), gp) ' add together border graphics path g.drawpath(new pen(new solidbrush(color.black), 20), gp) g.drawrectangle(new pen(new solidbrush(color.red), 1), rectangle.truncate(gp.getbounds)) ' tidy g.resettransform() mat.dispose() ' set picturebox value picturebox1.image = bmp

i'd post image forum doesn't allow me.

i want bounding rectangle include pen width too. used above triangle demo cant add together penwidth/2.

any ideas?

julian

if sufficient needs can set pen's .alignment property inset so:

g.drawpath(new pen(new solidbrush(color.black), 20) {.alignment = penalignment.inset}, gp)

this tells pen draw on within of path @ times. default draws on middle leads situation outside width @ edges dependant on angle of edge.

result is:

vb.net