def resize(self, width, height):
glViewport(0, 0, width, height)
self.perspective_mat = hm.perspective(hm.identity(),
60,
float(width) / height,
0.1,
6.0)
self.modelview_mat = hm.lookat(hm.identity(),
self.campos,
self.center)
self.mvp = np.dot(self.perspective_mat, self.modelview_mat)
def loadsquirrel(self):
# When loading the data, pad the normals to 4 floats (16bytes) since GPUs hate unaligned memory.
obj = wf.ObjFileParser("squirrel.obj", padnormals = 4)
self.objscale = 1 / np.max(obj.scale / 2)
self.objcenter = obj.minpos + (obj.scale / 2)
self.obj_mat = hm.scale(hm.identity(),
[self.objscale * 0.2] * 3)
self.obj_mat = hm.translation(self.obj_mat,
-self.objcenter)
# Generate a GL compatible indexed vertex buffer for the object
self.vbdata, ibdata = obj.generateIndexedBuffer([0,1], np.uint16)
vbdata = self.vbdata
self.elementnum = np.shape(ibdata)[0]
# VAO
self.vertobj = glGenVertexArrays(1)
glBindVertexArray(self.vertobj)
# Setup the VBO for the vertex data.
self.vertbuf = VBO(vbdata, GL_STATIC_DRAW, GL_ARRAY_BUFFER)
self.vertbuf.bind()
glVertexAttribPointer(self.positionloc, 4, GL_FLOAT, GL_TRUE, 8 * 4, ctypes.c_void_p(0))
glVertexAttribPointer(self.normalloc, 4, GL_FLOAT, GL_TRUE, 8 * 4, ctypes.c_void_p(16))
glEnableVertexAttribArray(self.positionloc)
glEnableVertexAttribArray(self.normalloc)
# Indexbuffer
self.indexbuf = VBO(ibdata, GL_STATIC_DRAW, GL_ELEMENT_ARRAY_BUFFER)
self.indexbuf.bind()
glBindVertexArray(0)
self.vertbuf.unbind()
self.indexbuf.unbind()
#Animation init...
self.rotation = 0
def display(self, timediff):
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
self.shader.use()
glUniformMatrix4fv(self.objploc, 1, GL_TRUE,
np.dot(hm.rotation(hm.identity(), self.rotation, [0,1,0]), self.obj_mat).tolist())
glUniformMatrix4fv(self.mvploc, 1, GL_TRUE,
hm.rotation(self.mvp, self.rotation / 4, [0.577350269189626] * 3).tolist())
glBindVertexArray(self.vertobj)
glDrawElementsInstanced(GL_TRIANGLES, self.elementnum, GL_UNSIGNED_SHORT, ctypes.c_void_p(0), 125)
glBindVertexArray(0)
self.rotation += timediff / 5 * 360