Physics draw mode not accurate??

Hi, ive been working on code to draw a STRAIGHT line when you swipe across the screen that has static physics attached to it. I wanted my physics bodies to be as precise on the object as possible so here's what i came up with ( the triangle is for reference)

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 local function drawLine(event)
local angle = 0
if (event.phase == "ended") then
        local a = event.x - event.xStart
        local b = event.y - event.yStart
        local c = (a^2 + b^2)^(1/2)
        local sideA = display.newLine(event.xStart,event.yStart,event.x,event.yStart)
        local sideB = display.newLine(event.x,event.yStart,event.x,event.y)
        local hyp = display.newLine(event.xStart,event.yStart,event.x,event.y)
        angle = math.deg(math.acos(a/c))
        newLine = display.newRect(event.xStart,event.yStart,c,3)
        newLine:setReferencePoint(display.TopLeftReferencePoint)
        if (event.y < event.yStart) then
        newLine.rotation = angle*-1
        physics.addBody(newLine,"static",{density = 1,friction = 0})
        end
        if (event.y > event.yStart) then
        newLine.rotation = angle
        physics.addBody(newLine,"static",{density = 1,friction = 0})
        end 
end

One problem I see in your code is trying to change the angle of a physics object (newLine). Once you do an physics.addBody on a Display Object, you can no longer change it properties with normal Display Objects APIs. The object is now a physics object and the physics engine does not track any property changes (e.g. rotation) you make.

-Tom

views:1159 update:2011/10/4 17:12:07
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