def __init__(self):
# Create two lists: one with vertex positions, and normals, and the
# other one with the indices that indicate which vertices should be
# used for each triangle (two per face of the cube)
pos = []
for i in xrange(8):
pos.append([
1.0 if i & 1 else -1.0,
1.0 if i & 2 else -1.0,
1.0 if i & 4 else -1.0,
])
faces = [[0,1,3,2],[1,5,7,3],[2,3,7,6],[0,4,5,1],[0,2,6,4],[4,6,7,5]]
vertices = []
indices = []
i = 0
for f in faces:
p_arr = map(lambda i:floatArray(pos[i]), f)
n = list(planeNormal(p_arr[0], p_arr[1], p_arr[2]))
indices.extend([i,i+1,i+3,i+1,i+2,i+3])
i +=4
for j,v in enumerate(f):
# notice vertices is a list of lists. Each row holds the data of a single vertex
# and each column is a float
vertices.append(list(p_arr[j]) + n)
# convert the list of lists into a Numpy array of floats
vertices = floatArray(vertices)
# create two VBO, one for the data of each vertex (a GL_ARRAY_BUFFER),
# and one for the indices into that array (a GL_ELEMENT_ARRAY_BUFFER)
self._data_vbo = DataVbo(vertices)
self._indices_vbo = IndexVbo(indices)
# we specify what is stored in each record (a rown in vertices) in the data_vbo mean
# we do this so sPyGlass can automatically bind the attributes in the shaders. That means
# the names we specify here, must match both in name and dimension with the attributes
# of the shaders that make use of this vbo
self._data_vbo.defineFields(("position",3),("normal",3))
# now that we have the VBOs, we call the superclass constructor
super(Cube,self).__init__(self._data_vbo, self._indices_vbo)
# we're going to specify a "Batch". a "Batch" is a combination of VBOs, indices range,
# a shader, and a material
# load the shader program (vertex and fragment shaders)
shader = R.loadShaderProgram("phong")
# load the material red_plastic from the file default.mat
mat = R.loadMaterial("default:red_plastic")
# 0 - start this batch at index 0
# 12 - use enough indices for 12 primitives (GL_TRIANGLES in this case)
self.addBatch(shader, mat, 0, 12)
def __init__(self):
super(MainScene,self).__init__()
# use font "test-font" (.zip)
self._fnt = R.loadFont("test-font")
self._cube = Cube()
cam = PerspectiveCamera()
self.setCamera(cam)
cam.setPosition(floatArray((0,0,5)),floatArray((0,0,0)))
self._text = Text()
self._text.setFont(self._fnt)
self._text.setText("This is\na test")
