shader = require 'shader'

local function drawLabel(str, x, y, z)
  lovr.graphics.setColor(1, 1, 1)
  lovr.graphics.print(str, x, y, z, .1)
end

function lovr.draw()
  lovr.graphics.setBackgroundColor(.1, .1, .1)
  lovr.graphics.setShader(shader)

  local hx, hy, hz = lovr.headset.getPosition()
  local x, y, z

  -- Point
  x, y, z = -.6, 1.1, -1
  lovr.graphics.setPointSize(5)
  lovr.graphics.setColor(1, 1, 1)
  lovr.graphics.points(x, y, z)

  -- Line
  x, y, z = 0, 1.1, -1
  local points = {
    x - .1, y, z,
    x + .1, y, z
  }
  lovr.graphics.setColor(1, 1, 1)
  lovr.graphics.line(points)

  -- Triangle
  local x, y, z = .6, 1.1, -1
  local p1 = { x, y + .2, z }
  local p2 = { x - .2, y - .2, z }
  local p3 = { x + .2, y - .2, z }
  lovr.graphics.setColor(.36, .41, .75)
  lovr.graphics.triangle('fill', p1[1], p1[2], p1[3], p2[1], p2[2], p2[3], p3[1], p3[2], p3[3])

  -- Plane
  local x, y, z = -.6, 1.7, -1.5
  lovr.graphics.setColor(.94, .33, .31)
  lovr.graphics.plane('fill', x, y, z, .4, .4, lovr.timer.getTime())

  -- Cube
  local x, y, z = 0, 1.7, -1.5
  lovr.graphics.setColor(.49, .34, .76)
  lovr.graphics.cube('fill', x, y, z, .3, lovr.timer.getTime())

  -- Box
  local x, y, z = .6, 1.7, -1.5
  lovr.graphics.setColor(1, .65, .18)
  lovr.graphics.box('fill', x, y, z, .4, .2, .3, lovr.timer.getTime())

  -- Cylinder
  local x, y, z = -.6, 2.4, -2
  lovr.graphics.setColor(.4, .73, .42)
  lovr.graphics.cylinder(x, y, z, .4, lovr.timer.getTime(), 0, 1, 0, .1, .1)

  -- Cone
  local x, y, z = 0, 2.4, -2
  lovr.graphics.setColor(1, .95, .46)
  lovr.graphics.cylinder(x, y, z, .4, math.pi / 2, 1, 0, 0, 0, .18)

  -- Sphere
  local x, y, z = .6, 2.4, -2
  lovr.graphics.setColor(.3, .82, 1)
  lovr.graphics.sphere(x, y, z, .2)

  lovr.graphics.setShader()
  drawLabel('Point', -.6, 1.4, -1)
  drawLabel('Line', 0, 1.4, -1)
  drawLabel('Triangle', .6, 1.4, -1)
  drawLabel('Plane', -.6, 2.0, -1.5)
  drawLabel('Cube', 0, 2.0, -1.5)
  drawLabel('Box', .6, 2.0, -1.5)
  drawLabel('Cylinder', -.6, 2.7, -2)
  drawLabel('Cone', 0, 2.7, -2)
  drawLabel('Sphere', .6, 2.7, -2)
end