-- 显示鼠标当前位置（客户端窗口位置、坐标系的位置、GLView的位置）
-- 处理按下鼠标中键移动场景的功能

require("CSharpConstants")
local Camera2DControllerTool = class("Camera2DControllerTool")

function Camera2DControllerTool:moveTo(endPos)
	local offset = cc.pSub(endPos , self.startPos);
	local scale = app.setting.ScreenScale;

	offset.x = -offset.x / scale;
	offset.y = -offset.y / scale;
	local newWorld = cc.pAdd(self.originPos , offset);
	app.mainCamera:getNode():setTranslation(newWorld);
end	

function Camera2DControllerTool:MouseMove(button , x , y)
	local glViewPos = app.visibleRect:convertScreenToGLView(x, y);
	if self.startPos then
		-- 计算结束点
		self:moveTo(glViewPos);
	end		
	local point = app.visibleRect:convertScreenToCoordinate(x, y);

	local strMapCoord = "";
	if app.editor and app.editor.Map then
		local tilePos = app.editor.Map:getTilePosition(point.x , point.y);
		strMapCoord = string.format(" TilePos:%d,%d" , tilePos.x , tilePos.y);
	end
	return string.format("Mouse:%d,%d Coordinate:%d,%d GLView:%d,%d" .. strMapCoord , x , y , point.x , point.y , glViewPos.x , glViewPos.y);
end

function Camera2DControllerTool:MoveDown(button, x, y)
	-- 鼠标中键按下可以移动场景
	if button ~= MouseButtons.Middle then return end
		
	-- 鼠标的按下位置
	self.startPos = app.visibleRect:convertScreenToGLView(x, y);
	-- 场景的位置
	self.originPos = app.mainCamera:getNode():getTranslation();	
end

function Camera2DControllerTool:MoveUp(button, x, y)
	if not self.startPos then return end
	-- 计算结束点
	self:moveTo(app.visibleRect:convertScreenToGLView(x, y));
	self.startPos = nil;
	self.originPos = nil;
end

function Camera2DControllerTool:KeyDown(Control , Alt , Shift , KeyCode)

end

function Camera2DControllerTool:update()

end

-- 摆放物件时使用这个函数计算物件应该放在什么位置
function Camera2DControllerTool:convertScreenToWorldPos(mouseX , mouseY)
	return app.visibleRect:convertScreenToWorldPos2D(mouseX , mouseY);
end

-- 刷新设置时调用
function Camera2DControllerTool:refreshSetting()
	app.setting.ScreenScale = cc.clampf(app.setting.ScreenScale , app.setting.ScreenScaleMin , app.setting.ScreenScaleMax);
	-- 设置相机缩放
	app.mainCamera:getNode():setScale(1 / app.setting.ScreenScale);

	app.background:removeAllChildren();
	-- 设置OpenGL背景颜色
	gl.clearColor(0,0,0,0);

	-- 画手机外壳
	if app.setting.ShowIPhone5 then
		local bgIphone5 = cc.Sprite:create("Editor/iphone5.png");
		app.background:addChild(bgIphone5)
	end

	-- 设置背景颜色
	local bgColor = cc.LayerColor:create(app.setting.BackgroundColor);
	bgColor:setContentSize(cc.size(app.setting.ResourceSize.width,app.setting.ResourceSize.height))
	bgColor:setAnchorPoint(app.setting.OriginAnchor)
	bgColor:ignoreAnchorPointForPosition(false);
	bgColor:setGlobalZOrder(-100000000);
	--app.background:addChild(bgColor)
	
	-- 创建背景图
	if app.setting.BackgroundImage ~= "" then
		local bg = cc.Sprite:create(app.setting.BackgroundImage);
		local size = bg:getContentSize();
		bg:setAnchorPoint(app.setting.OriginAnchor)
		app.background:addChild(bg)
	end	

	if app.setting.ShowGrid then
		-- 创建网格
		local vertices = {};
		local viewSize = cc.size(app.setting.ResourceSize.width,app.setting.ResourceSize.height);
			
		local gridWidth = app.setting.GridSize.width
		local gridHeight = app.setting.GridSize.height
		
		local gridCountY = math.floor(viewSize.height / gridHeight);

		local vertexFormat = {};
		table.insert(vertexFormat , {size = 3 , usage = cc.VertexFormatUsage.POSITION});
		table.insert(vertexFormat , {size = 4 , usage = cc.VertexFormatUsage.COLOR});
		local vertices = ManualVertices:new(vertexFormat);
		vertices:setColor(app.setting.GridColor);

		-- 画横向网格
		for i = -gridCountY , gridCountY do
			vertices:drawLine(cc.vec3(-viewSize.width , i * gridHeight , 0) , cc.vec3(viewSize.width , i * gridHeight , 0));
		end

		-- 画竖向网格
		local gridCountX = math.floor(viewSize.width / gridWidth);
		for i = -gridCountX , gridCountX do
			vertices:drawLine(cc.vec3(i * gridWidth , -viewSize.height , 0) , cc.vec3(i * gridWidth , viewSize.height , 0))
		end
		
		vertices:setColor(app.setting.AxisColor);
		-- 画轴
		vertices:drawLine(cc.vec3(-viewSize.width , 0 , 0) , cc.vec3(viewSize.width , 0 , 0))
		vertices:drawLine(cc.vec3(0 , -viewSize.height , 0) , cc.vec3(0 , viewSize.height , 0))

		local mesh = cc.Mesh:createMesh(vertexFormat , vertices:getVertexCount());
		mesh:setPrimitiveType(cc.PrimitiveType.LINES);
		mesh:setVertexData(vertices:getVertices() , 0 , vertices:getVertexCount());
		mesh:setBoundingBox(vertices:getBoundingBox());

		local model = cc.Model:create(mesh);
		local material = cc.Material:create("core/preload/shaders/ccDefault.material#ShaderPositionColor");
		material:setParameterAutoBinding("CC_MVPMatrix" , "WORLD_VIEW_PROJECTION_MATRIX");
		model:setMaterialPointer(material);
		
		local node = cc.Node3D:create();
		node:addComponent(model);
		app.background:addChild(node);
	end
	
end

return Camera2DControllerTool;