local ig = require "imgui.love"

local instance
love.load = function(args)
    instance = ig.love_load{use_imgui_docking = true, use_imgui_viewport = false}
end

love.textinput = function(text)
    instance.textinput(text)
end

love.keypressed = function(key,scancode,isrepeat)
     instance.update_key(scancode, true)
end

love.keyreleased = function(key,scancode)
    instance.update_key(scancode, false)
end

love.wheelmoved = function(x,y)
    instance.wheelmoved(x,y)
end

local ffi = require"ffi"
local val = ffi.new("float[1]")
local padval = ffi.new("float[2]")
local curve = ig.Curve("mycurve",12,100)
local Quat = ffi.new("quat",{1,0,0,0})
local v3 = ffi.new("vec3",{1,0,0})
local mat4 = ig.mat4_cast(Quat)

love.draw = function()
    instance:NewFrame()
    
    instance.MainDockSpace()
    
    if ig.Begin("widgets",nil, ig.lib.ImGuiWindowFlags_AlwaysAutoResize) then
        if ig.TreeNode"dial" then
            ig.dial("turns",val,nil,0.5/math.pi)
            ig.SameLine()
            ig.dial("radians",val)
            ig.TreePop();
            ig.Separator();
        end
        if ig.TreeNode"pad" then
            ig.pad("mypad", padval)
            ig.InputFloat2("vals",padval)
            ig.TreePop();
            ig.Separator();
        end
        if ig.TreeNode"curve" then
            if curve:draw(ig.ImVec2(400,300)) then
            --do something with curve.LUT array of 100 floats
            end
            ig.InputFloat2("first two",curve.LUT, nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.TreePop();
            ig.Separator();
        end
        if ig.TreeNode"gizmoquat" then

            if ig.gizmo3D("###guizmo0",v3,Quat,150) then 
                mat4 = ig.mat4_pos_cast(Quat,v3)
            end
            
            ig.SameLine()
            ig.BeginGroup()
            ig.InputFloat4("##1",mat4.f, nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.InputFloat4("##2",mat4.f+4, nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.InputFloat4("##3",mat4.f+8, nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.InputFloat4("##4",mat4.f+12, nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.EndGroup()
            ig.imguiGizmo_setDirectionColor(ig.ImVec4(1,0,0,1))
            ig.gizmo3D("guizmo3",v3,150)
            ig.imguiGizmo_restoreDirectionColor()
            ig.InputFloat3("dir",ffi.new("float[3]",{v3.x,v3.y,v3.z}), nil, ig.lib.ImGuiInputTextFlags_ReadOnly)
            ig.TreePop();
            ig.Separator();
        end
    end
    ig.End()
    
    ig.ShowDemoWindow()
    
    instance:Render()
end
