コード例 #1
0
ファイル: paint.py プロジェクト: Markitox/pymt
def paintLine(points, numsteps=None, **kwargs):
    '''Paint a line with current brush
    ::

        set_brush("mybrush.png", 10)
        paintLine((0, 0, 20, 50))
        paintLine((1, 2, 1, 5, 4, 6, 8, 7))

    '''
    if not __brush_texture:
        pymt.pymt_logger.warning('Graphx: No brush set to paint line, abort')
        return
    if len(points) % 2 == 1:
        raise Exception('Points list must be a pair length number (not impair)')
    kwargs.setdefault('sfactor', GL_SRC_ALPHA)
    kwargs.setdefault('dfactor', GL_ONE_MINUS_SRC_ALPHA)
    blending = GlBlending(sfactor=kwargs.get('sfactor'),
                          dfactor=kwargs.get('dfactor'))
    with DO(blending, gx_enable(GL_POINT_SPRITE_ARB),
            gx_enable(__brush_texture.target)):

        # prepare env
        set_texture(__brush_texture.id, target=__brush_texture.target)
        glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)
        glPointSize(__brush_size)

        # initialize outputList
        outputList = []

        # extract 4 points each 2 points
        for x1, y1, x2, y2 in zip(points[::2], points[1::2],
                                  points[2::2], points[3::2]):

            # calculate vector and distance
            dx, dy = x2 - x1, y2 - y1
            dist = sqrt(dx * dx + dy * dy)

            # determine step
            steps = numsteps
            if steps is None:
                steps = max(1, int(dist) / 4)

            # construct pointList
            for i in xrange(steps):
                outputList.extend([x1 + dx * (float(i) / steps),
                                   y1 + dy * (float(i) / steps)])

        # draw !
        if len(outputList) < 2:
            return
        with gx_begin(GL_POINTS):
            for x, y in zip(outputList[::2], outputList[1::2]):
                glVertex2f(x, y)
コード例 #2
0
ファイル: bezier.py プロジェクト: Markitox/pymt
 def draw_filled_path(self):
     for style, points in self.filled_path:
         with gx_begin(style):
             for x, y in zip(points[::2], points[1::2]):
                 glVertex2f(x, y)