Near, Far that control how far the camera will render
Size that control how wide the camera is. it also works a zooming lens.
during the game control only position and rotation to avoid any errors.
-- Author : AbdElAziz Mofath
-- Date: 4th of April 2018 at 8:10 PM
"""
from OpenGL.GL import glTranslate, glRotatef
from Kernel.Utilities import Vector3
__swr, __shr = 0, 0
size, near, far = 5, 0.1, 100.
clearColor = Vector3(1, 1, 1)
position = Vector3(0, 0, -10)
rotation = Vector3(0, 0, 0)
def applyTransformation(screenWidthRatio, screenHeightRatio):
"""
This function is used to apply the camera transformation to the game.
it must be used only before calling every object in the game.
it only do transformation and rotation. so scaling.
"""
global position, __swr, __shr
__swr, __shr = screenWidthRatio, screenHeightRatio
def screenToWorld(vec):
global position, __swr, __shr
x, y = vec.x * __swr * size, vec.y * __shr * size
return Vector3(position.x + x, position.y + y, 0)
def MousePosition():
"""
:return: the position of the mouse referenced to the drawing window in range (-1, 1) in both x, y.
"""
return Vector3(__mouse_x, __mouse_y, 0)