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-- Use of isMirrored assumes normalized points. Might add support for non-normalized points later
if(index == 3 and isMirrored) then
points[index] = { x = p.x, y = 1 - p.y }
else
points[index] = { x = p.x, y = p.y }
end
end
return x1 * x2 + y1 * y2
end
--[[ ZO_Triangle:
A simple collection of 3 verts that allows point testing to determine if a user-supplied point is inside or outside
the triangle and facilities to clamp a user-supplied point to the nearest edge.
--]]
triangle.m_isMirrored = isMirrored
return triangle
end
-- Points are defined in CCW order starting at lower left
end
end
end
local v0 = { x = b.x - a.x, y = b.y - a.y }
local v2 = { x = x - a.x, y = y - a.y }
local denominator = v0.x * v1.y - v1.x * v0.y
local factor = 1 / denominator
--Calculate each value and clamp between 0 and 1
return left, right, top
end
local minDist = nil
local closestX, closestY
for i=1, 3 do
local edgeX, edgeY = currentPoint.x - lastPoint.x, currentPoint.y - lastPoint.y
local edgeNormalX, edgeNormalY = -edgeY, edgeX
local differenceX, differenceY = x - lastPoint.x, y - lastPoint.y
local pointOnEdgeX, pointOnEdgeY = lastPoint.x + (edgeX * edgeProjection), lastPoint.y + (edgeY * edgeProjection)
local diffToEdgeX, diffToEdgeY = pointOnEdgeX - x, pointOnEdgeY - y
if not minDist or diffToEdgeLength < minDist then
minDist = diffToEdgeLength
closestX = pointOnEdgeX
closestY = pointOnEdgeY
end
end
end
if minDist then
--Outside
return closestX, closestY, false
end
--Inside
return x, y, true
end
y = 1 - y
end
end
local userX = x - vTop.x
local userY = y - vTop.y
local rX = vRight.x - vTop.x
local rY = vRight.y - vTop.y
local lX = vLeft.x - vTop.x
local lY = vLeft.y - vTop.y
local b = (userY * rX - userX * rY) / (lY * rX - lX * rY)
local a = (userX - b * lX) / rX
a, b = b, a
end
if(a < 0) then
b = b + a
elseif(b < 0) then
a = a + b
end
return a, b
end
a, b = b, a
end
local xTop, yTop = vTop.x, vTop.y
local xLeft, yLeft = vLeft.x, vLeft.y
local xRight, yRight = vRight.x, vRight.y
local x = xTop + (xRight - xTop) * a + (xLeft - xTop) * b
local y = yTop + (yRight - yTop) * a + (yLeft - yTop) * b
y = 1 - y
end
return x, y
end
--[[ ZO_TrianglePicker:
Wraps a single triangle object and a gui control so that a thumb button can be positioned within the triangle
--]]
return picker
end
do
local currentPickerId = 0
else
currentPickerId = currentPickerId + 1
self.control = CreateControlFromVirtual("ZO_TrianglePickerControl", parent or GuiRoot, "ZO_TrianglePickerTemplate", currentPickerId)
end
end
end
local points = {
}
else
end
end
end
if(thumb) then
else
end
end
end
end
end
end
if(thumb) then
end
end
end
end
end
else
end
if(lastX ~= closestPointX or lastY ~= closestPointY) then
end
end
end
end
end
if(enableUpdates) then
end
end
else
end
end
end
end
return
end
end
-- Ok, the mouse wasn't over the actual triangle, but we may need to keep running the
-- update handler because it's still over the control...
end
end
end
end
end
--[[ XML Handlers ]]--
end
end
end
end |