building apps with blend2d about blend2d HOT 4 CLOSED

local winman = require("WinMan")

local stopviews = require("STOP_views")
local spiroapp = require("STOP_spiroapp")
local framestatapp = require("STOP_framestat")

local function startup()
    spawn(framestatapp, {x=0, y=0, width=1920, height=20})
    spawn(stopviews,{x=100, y=100, width=1024, height=768})
    spawn(spiroapp,{x=800, y=300, width=640, height=480})
end

winman {width = 1920, height=1080, startup = startup}

local SpiroGraphic = require("SpiroGraphic")

local function app(params)
    local win1 = WMCreateWindow(params.x,params.y, params.width, params.height)

    local spg = SpiroGraphic:new({width = params.width, height=params.height})

    win1:add(spg)
    win1:show()

    while true do
        win1:draw()
        yield();
    end
end

return app

local Graphic = require("Graphic")

local floor = math.floor
local random = math.random
local sin = math.sin;
local cos = math.cos

local SpiroGraphic = Graphic:new()

function SpiroGraphic.new(self, obj)
    obj = obj or {}
    
    obj.N = 36;
    obj.theta = 3.14159 * 2 / obj.N;
    obj.centerX = obj.centerX or obj.width/2;
    obj.centerY = obj.centerY or obj.height/2;

    setmetatable(obj, self)
    self.__index = self;
    
    return obj;
end


function SpiroGraphic:draw(ctxt)
    ctxt:stroke(255, 0,0)
    ctxt:setStrokeWidth(1)
    local x = 0;
    local y = 0;


	local Radius = (self.height / 2) - 5;

    for p = 0, self.N-1 do
		local num = floor((p / self.N) * 254.0);
        local r = random(0, num);
		local g = random(0, num);
		local b = random(0, num);
        ctxt:stroke(r, g, b)

		for q = 0, p-1 do
		    ctxt:line(floor(self.centerX + Radius * sin(p * self.theta)), floor(self.centerY + Radius * cos(p * self.theta)),
		     floor(self.centerX + Radius * sin(q * self.theta)), floor(self.centerY + Radius * cos(q * self.theta)));
        end
    end
end

return SpiroGraphic