sfml_arrays.py

import time, sfml as sf

def time_stuff():
    setup_times = []
    for i in xrange(passes):
        start = time.time()
        create_va(W, H)
        end = time.time()
        setup_times.append(end - start)

    usage_times = []
    for i in xrange(passes):
        start = time.time()
        update_va(W, H)
        end = time.time()
        usage_times.append(end - start)

    print ("setup_times - min %.3fs, max %.3fs" % (min(setup_times), max(setup_times)))
    print ("usage_times - min %.3fs, max %.3fs" % (min(usage_times), max(usage_times)))

def create_va(W, H):
    global va
    va.resize(W*H*4)

    for i in xrange(W):
        for j in xrange(H):
            INDEX = (i+j*W) *4

            va[INDEX + 0].position = sf.Vector2(  i   *W,    j   *H )
            va[INDEX + 1].position = sf.Vector2( (i+1)*W,    j   *H )
            va[INDEX + 2].position = sf.Vector2( (i+1)*W,   (j+1)*H )
            va[INDEX + 3].position = sf.Vector2(  i   *W,   (j+1)*H )

            va[INDEX + 0].tex_coords = sf.Vector2()
            va[INDEX + 1].tex_coords = sf.Vector2()
            va[INDEX + 2].tex_coords = sf.Vector2()
            va[INDEX + 3].tex_coords = sf.Vector2()

            va[INDEX + 0].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 1].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 2].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 3].color = sf.Color(0, 0, 0, 0)

def update_va(W, H):
    global va
    for i in xrange(W):
        for j in xrange(H):
            INDEX = (i+j*W) *4

            va[INDEX + 0].tex_coords = sf.Vector2()
            va[INDEX + 1].tex_coords = sf.Vector2()
            va[INDEX + 2].tex_coords = sf.Vector2()
            va[INDEX + 3].tex_coords = sf.Vector2()

            va[INDEX + 0].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 1].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 2].color = sf.Color(0, 0, 0, 0)
            va[INDEX + 3].color = sf.Color(0, 0, 0, 0)


if __name__ == '__main__':
    W, H = 80, 50
    passes = 7
    va = sf.VertexArray( sf.PrimitiveType.QUADS )

    time_stuff()
    raw_input()