Source code for compass

"""
    compass
"""
import logging
from OpenGL import GL
from drawable import Drawable
from glutils import gl
from mceutils import loadPNGTexture
from config import config
import os

log = logging.getLogger(__name__)


[docs]def makeQuad(minx, miny, width, height):
    return [minx, miny, minx + width, miny, minx + width, miny + height, minx, miny + height]


[docs]class CompassOverlay(Drawable):
    _tex = None
    _yawPitch = (0., 0.)
    x, y = 0, 0

    def __init__(self):
        super(CompassOverlay, self).__init__()

    @property
    def yawPitch(self):
        return self._yawPitch

    @yawPitch.setter
    def yawPitch(self, value):
        self._yawPitch = value
        self.invalidate()

[docs]    def drawSelf(self):
        if self._tex is None:
            filename = os.path.join("toolicons", "compass.png")

            self._tex = loadPNGTexture(filename)
            
        self._tex.bind()
        size = 0.001 * config.settings.compassSize.get()

        with gl.glPushMatrix(GL.GL_MODELVIEW):
            GL.glLoadIdentity()

            yaw, pitch = self.yawPitch
            if config.settings.viewMode.get() == "Chunk":
                yaw = -180
            GL.glTranslatef(1. - (size + self.x), size + self.y, 0.0)  # position on upper right corner
            GL.glRotatef(180 - yaw, 0., 0., 1.)  # adjust to north
            GL.glColor3f(1., 1., 1.)

            with gl.glEnableClientState(GL.GL_TEXTURE_COORD_ARRAY):
                GL.glVertexPointer(2, GL.GL_FLOAT, 0, makeQuad(-size, -size, 2 * size, 2 * size))
                GL.glTexCoordPointer(2, GL.GL_FLOAT, 0, makeQuad(0, 0, 256, 256))

                with gl.glEnable(GL.GL_BLEND, GL.GL_TEXTURE_2D):
                    GL.glDrawArrays(GL.GL_QUADS, 0, 4)