def __init__(self, src, actor=None):
Component.__init__(self, actor)
# TODO Include a mesh name (e.g. 'Dragon') as ID as well as src (e.g. '../res/models/Dragon.obj')
self.src = src
self.filepath = Context.getInstance().getResourcePath('models', src)
# OpenGL version-dependent code (NOTE assumes major version = 3)
self.vao = None
if Context.getInstance().GL_version_minor > 0: # 3.1 (or greater?)
self.vao = glGenVertexArrays(1)
else: # 3.0 (or less?)
self.vao = GLuint(0)
glGenVertexArrays(1, self.vao)
glBindVertexArray(self.vao)
self.loadModel(self.filepath)
self.vbo = VBO(self.meshData, GL_STATIC_DRAW)
self.vbo.bind()
glEnableVertexAttribArray(0)
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6*4, self.vbo+0)
glEnableVertexAttribArray(1)
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6*4, self.vbo+12)
self.ebo = glGenBuffers(1)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self.ebo)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, len(self.elements)*4, self.elements, GL_STATIC_DRAW)
def __init__(self, src, actor=None):
Component.__init__(self, actor)
# TODO Include a mesh name (e.g. 'Dragon') as ID as well as src (e.g. '../res/models/Dragon.obj')
self.src = src
self.filepath = Context.getInstance().getResourcePath('models', src)
# OpenGL version-dependent code (NOTE assumes major version = 3)
self.vao = None
if Context.getInstance().GL_version_minor > 0: # 3.1 (or greater?)
self.vao = glGenVertexArrays(1)
else: # 3.0 (or less?)
self.vao = GLuint(0)
glGenVertexArrays(1, self.vao)
glBindVertexArray(self.vao)
self.loadModel(self.filepath)
self.vbo = VBO(self.meshData, GL_STATIC_DRAW)
self.vbo.bind()
glEnableVertexAttribArray(0)
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * 4, self.vbo + 0)
glEnableVertexAttribArray(1)
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * 4, self.vbo + 12)
self.ebo = glGenBuffers(1)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self.ebo)
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
len(self.elements) * 4, self.elements, GL_STATIC_DRAW)
def make_solid_obj(self, fn, spacing):
mesh_object = MeshObject(fn, spacing)
glBindVertexArray(mesh_object.vao)
glEnableVertexAttribArray(self.shader.get_attrib("position"))
glVertexAttribPointer(self.shader.get_attrib("position"),
3,
GL_FLOAT,
False,
self.stride,
mesh_object.vtVBO)
glEnableVertexAttribArray(self.shader.get_attrib("normal"))
glVertexAttribPointer(
self.shader.get_attrib("normal"),
3, GL_FLOAT, False, self.stride, mesh_object.vtVBO+12
)
glEnableVertexAttribArray(self.shader.get_attrib("color"))
glVertexAttribPointer(
self.shader.get_attrib("color"),
3, GL_FLOAT, False, self.stride, mesh_object.vtVBO+24
)
glBindVertexArray(0)
self.solid_objects.append(mesh_object)
def make_volume_obj(self, stack, spacing):
volume_object = VolumeObject(stack, spacing)
glEnableVertexAttribArray(self.b_shader.get_attrib("position"))
glVertexAttribPointer(self.b_shader.get_attrib("position"),
3,
GL_FLOAT,
False,
self.volume_stride,
volume_object.vtVBO)
glEnableVertexAttribArray(self.b_shader.get_attrib("texcoord"))
glVertexAttribPointer(
self.b_shader.get_attrib("texcoord"),
3, GL_FLOAT, False, self.volume_stride, volume_object.vtVBO+12
)
glBindVertexArray(0)
glDisableVertexAttribArray(self.b_shader.get_attrib("position"))
glDisableVertexAttribArray(self.b_shader.get_attrib("texcoord"))
glBindBuffer(GL_ARRAY_BUFFER, 0)
self.volume_objects.append(volume_object)
def __init__(self, stack, spacing):
self.active = True
self.stack_object = StackObject(stack, spacing)
shape = self.stack_object.shape
self.vao = glGenVertexArrays(1)
glBindVertexArray(self.vao)
tl = np.array((shape[2]*spacing[0], # x
shape[1]*spacing[1], # y
shape[0]*spacing[2])) # z
# Vertex buffer: corners of cube.
# x, y, z, texture_x, texture_y, texture_z
vb = [[0.0, 0.0, 0.0, 0.0, 0.0, 0.0], # Corner 0.
[tl[0], 0.0, 0.0, 1.0, 0.0, 0.0],
[0.0, tl[1], 0.0, 0.0, 1.0, 0.0],
[tl[0], tl[1], 0.0, 1.0, 1.0, 0.0],
[0.0, 0.0, tl[2], 0.0, 0.0, 1.0],
[tl[0], 0.0, tl[2], 1.0, 0.0, 1.0],
[0.0, tl[1], tl[2], 0.0, 1.0, 1.0],
[tl[0], tl[1], tl[2], 1.0, 1.0, 1.0]] # Corner 7.
vb = np.array(vb, dtype=np.float32)
vb = vb.flatten()
# Triangles of cube.
idx_out = np.array([[0, 2, 1], [2, 3, 1], # Triangle 0, triangle 1.
[1, 4, 0], [1, 5, 4],
[3, 5, 1], [3, 7, 5],
[2, 7, 3], [2, 6, 7],
[0, 6, 2], [0, 4, 6],
[5, 6, 4], [5, 7, 6]], # Triangle 10, triangle 11.
dtype=np.uint32)
self.vtVBO = VBO(vb)
self.vtVBO.bind()
sc = 1.0/la.norm(tl)
c = 0.5*tl
self.transform = np.array(((sc, 0.0, 0.0, -sc*c[0]),
(0.0, sc, 0.0, -sc*c[1]),
(0.0, 0.0, sc, -sc*c[2]),
(0.0, 0.0, 0.0, 1.0)))
self.tex_transform = np.array(((1.0/tl[0], 0.0, 0.0, 0.0),
(0.0, 1.0/tl[1], 0.0, 0.0),
(0.0, 0.0, 1.0/tl[2], 0.0),
(0.0, 0.0, 0.0, 1.0)))
glBindVertexArray(0)
self.elVBO = VBO(idx_out, target=GL_ELEMENT_ARRAY_BUFFER)
self.elCount = len(idx_out.flatten())
def __init__(self, fn, spacing):
self.active = True
m = GLMesh()
self.mesh = m
sc = m.load_ply(fn)
v_out, n_out, col_out, idx_out = m.generate_arrays()
vb = np.concatenate((v_out, n_out, col_out), axis=1)
self.elVBO = VBO(idx_out, target=GL_ELEMENT_ARRAY_BUFFER)
self.elCount = len(idx_out.flatten())
self.vao = glGenVertexArrays(1)
glBindVertexArray(self.vao)
self.vtVBO = VBO(vb)
self.vtVBO.bind()
glBindVertexArray(0)
c = np.array((0, 0, 0))
self.transform = np.array(((sc, 0.0, 0.0, -sc*c[0]),
(0.0, sc, 0.0, -sc*c[1]),
(0.0, 0.0, sc, -sc*c[2]),
(0.0, 0.0, 0.0, 1.0)))
def _render_solid_obj(self, solid_object, width, height, VMatrix, PMatrix):
glEnable(GL_DEPTH_TEST)
glUseProgram(self.shader.program)
glBindVertexArray(solid_object.vao)
solid_object.elVBO.bind()
mv_matrix = np.dot(VMatrix, solid_object.transform)
glUniformMatrix4fv(self.shader.get_uniform("mv_matrix"),
1, True, mv_matrix.astype('float32'))
glUniformMatrix4fv(self.shader.get_uniform("p_matrix"),
1, True, PMatrix.astype('float32'))
glDisable(GL_CULL_FACE)
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
# glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
glDrawElements(GL_TRIANGLES, solid_object.elCount,
GL_UNSIGNED_INT, solid_object.elVBO)
solid_object.elVBO.unbind()
glBindVertexArray(0)
glUseProgram(0)
def make_volume_obj(self, fn, spacing):
volume_object = VolumeObject(fn, spacing)
volume_object.threshold = 15
glBindVertexArray(volume_object.vao)
glEnableVertexAttribArray(self.b_shader.get_attrib("position"))
glVertexAttribPointer(self.b_shader.get_attrib("position"),
3,
GL_FLOAT,
False,
self.volume_stride,
volume_object.vtVBO)
glEnableVertexAttribArray(self.b_shader.get_attrib("texcoord"))
glVertexAttribPointer(
self.b_shader.get_attrib("texcoord"),
3, GL_FLOAT, False, self.volume_stride, volume_object.vtVBO+12
)
glBindVertexArray(0)
self.volume_objects.append(volume_object)
def init():
initialize_program()
initialize_vertex_buffer()
glBindVertexArray( glGenVertexArray() )
def render(self):
glBindVertexArray(self.vao)
glDrawElements(GL_TRIANGLES, self.elements.size, GL_UNSIGNED_INT, None)
def init():
initialize_program()
initialize_vertex_buffer()
glBindVertexArray(glGenVertexArray())
def _render_volume_obj(self, volume_object, width, height, VMatrix, PMatrix):
glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
glViewport(0, 0, width, height)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, volume_object.stack_object.stack_texture)
glClear(GL_COLOR_BUFFER_BIT) # Clear back buffer.
glEnable(GL_CULL_FACE)
glCullFace(GL_FRONT) # NB flipped
# glValidateProgram(self.b_shader.program)
# logging.debug("b_valid ", glGetProgramiv(self.b_shader.program,
# GL_VALIDATE_STATUS))
# logging.debug(glGetProgramInfoLog(self.b_shader.program).decode())
glUseProgram(self.b_shader.program)
glBindVertexArray(volume_object.vao)
volume_object.elVBO.bind()
mv_matrix = np.dot(VMatrix, volume_object.transform)
glUniformMatrix4fv(self.b_shader.get_uniform("mv_matrix"),
1, True, mv_matrix.astype('float32'))
glUniformMatrix4fv(self.b_shader.get_uniform("p_matrix"),
1, True, PMatrix.astype('float32'))
glDrawElements(GL_TRIANGLES, volume_object.elCount,
GL_UNSIGNED_INT, volume_object.elVBO)
volume_object.elVBO.unbind()
glBindVertexArray(0)
glUseProgram(0)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glActiveTexture(GL_TEXTURE0 + 1)
glBindTexture(GL_TEXTURE_2D, self.bfTex)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, volume_object.stack_object.stack_texture)
glUseProgram(self.f_shader.program)
glUniform1i(self.f_shader.get_uniform("texture3s"), 0)
glUniform1i(self.f_shader.get_uniform("backfaceTex"), 1)
glEnable(GL_CULL_FACE)
glCullFace(GL_BACK)
glBindVertexArray(volume_object.vao)
volume_object.elVBO.bind()
glUniformMatrix4fv(self.f_shader.get_uniform("mv_matrix"),
1, True, mv_matrix.astype('float32'))
glUniformMatrix4fv(self.f_shader.get_uniform("p_matrix"),
1, True, PMatrix.astype('float32'))
glDrawElements(GL_TRIANGLES, volume_object.elCount,
GL_UNSIGNED_INT, volume_object.elVBO)
glActiveTexture(GL_TEXTURE0+1)
glBindTexture(GL_TEXTURE_2D, 0)
glCullFace(GL_BACK)
volume_object.elVBO.unbind()
glBindVertexArray(0)
glUseProgram(0)
def _render_volume_obj(self, volume_object, width, height, VMatrix, PMatrix):
glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
glViewport(0, 0, width, height)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, volume_object.stack_object.stack_texture)
glClear(GL_COLOR_BUFFER_BIT) # Clear back buffer.
glEnable(GL_CULL_FACE)
glCullFace(GL_BACK)
glUseProgram(self.b_shader.program)
glBindVertexArray(volume_object.vao)
volume_object.elVBO.bind()
mv_matrix = np.dot(VMatrix, volume_object.transform)
glUniformMatrix4fv(self.b_shader.get_uniform("mv_matrix"),
1, True, mv_matrix.astype('float32'))
glUniformMatrix4fv(self.b_shader.get_uniform("p_matrix"),
1, True, PMatrix.astype('float32'))
glDrawElements(GL_TRIANGLES, volume_object.elCount,
GL_UNSIGNED_INT, volume_object.elVBO)
volume_object.elVBO.unbind()
glBindVertexArray(0)
glUseProgram(0)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glActiveTexture(GL_TEXTURE0 + 1)
glBindTexture(GL_TEXTURE_2D, self.bfTex)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, volume_object.stack_object.stack_texture)
glUseProgram(self.f_shader.program)
glUniform1i(self.f_shader.get_uniform("texture3s"), 0)
glUniform1i(self.f_shader.get_uniform("backfaceTex"), 1)
tex_inv_matrix = np.dot(PMatrix,
np.dot(mv_matrix,
la.inv(volume_object.tex_transform)))
glUniformMatrix4fv(self.f_shader.get_uniform('tex_inv_matrix'),
1,
True,
tex_inv_matrix.astype('float32'))
glUniform1f(self.f_shader.get_uniform('isolevel'),
volume_object.threshold/255.0)
glEnable(GL_CULL_FACE)
glCullFace(GL_FRONT)
glBindVertexArray(volume_object.vao)
volume_object.elVBO.bind()
glUniformMatrix4fv(self.f_shader.get_uniform("mv_matrix"),
1, True, mv_matrix.astype('float32'))
glUniformMatrix4fv(self.f_shader.get_uniform("p_matrix"),
1, True, PMatrix.astype('float32'))
glDrawElements(GL_TRIANGLES, volume_object.elCount,
GL_UNSIGNED_INT, volume_object.elVBO)
glActiveTexture(GL_TEXTURE0+1)
glBindTexture(GL_TEXTURE_2D, 0)
glCullFace(GL_BACK)
volume_object.elVBO.unbind()
glBindVertexArray(0)
glUseProgram(0)
def render(self):
glBindVertexArray(self.vao)
glDrawElements(GL_TRIANGLES, self.elements.size, GL_UNSIGNED_INT, None)