Viz artist advanced script video tutorial -- stringmap use and vertex operation

The ultimate effect of our video tutorial today is like this

What you see is a small one loops In a big circle Bumping around , Pass your own color to the one you hit circle .

Scripts mainly involve ： Angular mirroring , Vector and StringMap

1. Angle mirror and vector , These two are mainly used to calculate small loops The direction of movement , Calculate the opposite path when you hit something , Otherwise, keep the previous direction of travel .

2. StringMap, It is mainly used to store each small loops The direction of movement , With each container Of ID As Key.

Artist About... In the script document StringMap Introduction to ：

stringMap The simple usage is as follows ：

dim dir_Map as stringMap ' Statement stringmap
dir_map["001"]="DAVID"   ' assignment 
dim name=(String)dir_map["001"] ’ Value 

Excuse me , Take a video tutorial ：

height="498" width="510" src="http://player.youku.com/embed/XMTQ1MTM4ODUwMA==" frameborder="0" allowfullscreen="">

Youku's video quality is not good , You can go Vimeo watch Clearer video ： Click to open the link

Download the scene in the video via file , Please take a look at the QR code of the avatar in the video or on the left of this article , Pay attention to my micro signal , send out SM*（* No. is replaced by the red appearing in this article circle The number of words , Be careful if you are not good at math ） Get the scene download address , Math is not good Or students who like to read the code directly , So please see ：

dim ori,hitc as StringMap
dim ring_c as container=scene.findcontainer("Ring")
sub OnExecPerField()
	dim dot_c as container=childcontainer
	do while dot_c<> null
		if not dot_c.active then exit do
		dim c_id as string=(string)dot_c.vizid
		if not ori.ContainsKey(c_id) then ori[c_id]=cvertex(2.0,1.0,0.0)
		dim hit=hitc[c_id]
		dim dir = (vertex)ori[c_id]
		dim dot_c_pos,ring_c_pos as vertex
		dot_c_pos=dot_c.position.xyz
		
		
		dot_c_pos+=dir
		dot_c_pos.z=0
		
		dim dot_c_radius=dot_c.scaling.x*50.0
		ring_c_pos=ring_c.position.xyz
		if distance(ring_c_pos,dot_c_pos)>140-dot_c_radius then
			dir=-dir.MirrorAroundVector(ring_c_pos-dot_c_pos)
			hitc[c_id]=ring_c
			ring_c.material=dot_c.material
		end if
		
		dim tc as container=scene.findcontainer("CIRCLE").childcontainer
		do while tc<> null
			if not tc.active then exit do
			dim tc_radius = tc.scaling.x*50
			dim tc_position= tc.position.xyz
			if distance(tc_position,dot_c_pos)<tc_radius+dot_c_radius and tc<>hit then
				dir=-dir.MirrorAroundVector(tc_position-dot_c_pos)
				hitc[c_id]=tc
				tc.material=dot_c.material
			end if
			tc=tc.nextcontainer
		loop
		
		
		dir.z=0.0
		dir.Normalize()
		dir *=2.5
		ori[c_id]=dir
		dot_c.position.xyz=dot_c_pos
		dot_c=dot_c.nextcontainer
	loop
	
end sub