def make_vao(self):
self.vao = glGenVertexArrays(1)
glBindVertexArray(self.vao)
self.shader_program = OurShaderProgram(vert='texture.vert', frag='texture.frag')
self.shader_program.use()
self.vbo = make_buffer_object(data=self.vertices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ARRAY_BUFFER')
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 7*sizeof(GLfloat), self.vbo)
glEnableVertexAttribArray(0)
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 7*sizeof(GLfloat), self.vbo+2*sizeof(GLfloat))
glEnableVertexAttribArray(1)
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 7*sizeof(GLfloat), self.vbo+5*sizeof(GLfloat))
glEnableVertexAttribArray(2)
self.ebo = make_buffer_object(data=self.indices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ELEMENT_ARRAY_BUFFER')
self.vbo.unbind()
glBindVertexArray(0)
def start_slicing_stl(stl_filename, layer_thickness, slice_save_path):
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
if platform.system() == 'Darwin': # for Mac OS
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, GL_TRUE)
window = glfw.create_window(SCR_WIDTH, SCR_HEIGHT, 'STL Slicer', None,
None)
glfw.make_context_current(window)
glfw.set_framebuffer_size_callback(window, framebuffer_size_callback)
glfw.set_input_mode(window, glfw.CURSOR, glfw.CURSOR_NORMAL)
loadMesh(stl_filename)
glBindVertexArray(params.maskVAO)
sliceShader = OurShaderProgram('shaders/slice.vert', 'shaders/slice.frag')
prepareSlice()
i, height = 0, 0.
while not glfw.window_should_close(window):
processInput(window)
if height >= params.total_thickness - EPSILON:
break
else:
height += layer_thickness
i += 1
draw(sliceShader, height - EPSILON)
renderSlice(
sliceShader, height - EPSILON,
os.path.join(slice_save_path, 'out{:04d}.png'.format(i - 1)))
glfw.swap_buffers(window)
glfw.poll_events()
glfw.terminate()
def main():
init_glfw()
window = prepare_window()
vertices = np.array(
[[-0.5, -0.5, -0.5, 0.0, 0.0], [0.5, -0.5, -0.5, 1.0, 0.0],
[0.5, 0.5, -0.5, 1.0, 1.0], [0.5, 0.5, -0.5, 1.0, 1.0],
[-0.5, 0.5, -0.5, 0.0, 1.0], [-0.5, -0.5, -0.5, 0.0, 0.0],
[-0.5, -0.5, 0.5, 0.0, 0.0], [0.5, -0.5, 0.5, 1.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 1.0], [0.5, 0.5, 0.5, 1.0, 1.0],
[-0.5, 0.5, 0.5, 0.0, 1.0], [-0.5, -0.5, 0.5, 0.0, 0.0],
[-0.5, 0.5, 0.5, 1.0, 0.0], [-0.5, 0.5, -0.5, 1.0, 1.0],
[-0.5, -0.5, -0.5, 0.0, 1.0], [-0.5, -0.5, -0.5, 0.0, 1.0],
[-0.5, -0.5, 0.5, 0.0, 0.0], [-0.5, 0.5, 0.5, 1.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 0.0], [0.5, 0.5, -0.5, 1.0, 1.0],
[0.5, -0.5, -0.5, 0.0, 1.0], [0.5, -0.5, -0.5, 0.0, 1.0],
[0.5, -0.5, 0.5, 0.0, 0.0], [0.5, 0.5, 0.5, 1.0, 0.0],
[-0.5, -0.5, -0.5, 0.0, 1.0], [0.5, -0.5, -0.5, 1.0, 1.0],
[0.5, -0.5, 0.5, 1.0, 0.0], [0.5, -0.5, 0.5, 1.0, 0.0],
[-0.5, -0.5, 0.5, 0.0, 0.0], [-0.5, -0.5, -0.5, 0.0, 1.0],
[-0.5, 0.5, -0.5, 0.0, 1.0], [0.5, 0.5, -0.5, 1.0, 1.0],
[0.5, 0.5, 0.5, 1.0, 0.0], [0.5, 0.5, 0.5, 1.0, 0.0],
[-0.5, 0.5, 0.5, 0.0, 0.0], [-0.5, 0.5, -0.5, 0.0, 1.0]],
dtype=GLfloat)
cubePositions = np.array(
[[0.0, 0.0, 0.0], [2.0, 5.0, -15.0], [-1.5, -2.2, -2.5],
[-3.8, -2.0, -12.3], [2.4, -0.4, -3.5], [-1.7, 3.0, -7.5],
[1.3, -2.0, -2.5], [1.5, 2.0, -2.5], [1.5, 0.2, -1.5],
[-1.3, 1.0, -1.5]],
dtype=GLfloat)
VAO = glGenVertexArrays(1)
glBindVertexArray(VAO)
VBO = vbo.VBO(data=vertices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ARRAY_BUFFER')
VBO.bind()
VBO.copy_data()
ourShader = OurShaderProgram('camera.vert', 'camera.frag')
# position attribute
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), VBO)
glEnableVertexAttribArray(0)
# texture coord attribute
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat),
VBO + 3 * sizeof(GLfloat))
glEnableVertexAttribArray(1)
texture1 = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texture1)
# set the texture wrapping parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
# set texture filtering parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
# load image, create texture and generate mipmaps
im = Image.open('../images/container.jpg')
w, h = im.size
try:
im_bytes = im.tobytes("raw", "RGBA", 0, -1)
except ValueError:
im_bytes = im.tobytes("raw", "RGBX", 0, -1)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE,
im_bytes)
glGenerateMipmap(GL_TEXTURE_2D)
texture2 = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texture2)
# set the texture wrapping parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
# set texture filtering parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
# load image, create texture and generate mipmaps
im = Image.open('../images/awesomeface.png')
w, h = im.size
try:
im_bytes = im.tobytes("raw", "RGBA", 0, -1)
except ValueError:
im_bytes = im.tobytes("raw", "RGBX", 0, -1)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE,
im_bytes)
glGenerateMipmap(GL_TEXTURE_2D)
# tell opengl for each sampler to which texture unit it belongs
# to (only has to be done once)
ourShader.use()
ourShader.setInt('texture1', 0)
ourShader.setInt('texture2', 1)
# render loop
global deltaTime
global lastFrame
while not glfw.window_should_close(window):
# pre-frame time logic
currentFrame = glfw.get_time()
deltaTime = currentFrame - lastFrame
lastFrame = currentFrame
# input
processInput(window)
# render
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# bind textures on corresponding texture units
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_2D, texture1)
glActiveTexture(GL_TEXTURE1)
glBindTexture(GL_TEXTURE_2D, texture2)
# camera/view transformation
projection = glm_mt.perspective(np.radians(camera.Zoom),
SCR_WIDTH / SCR_HEIGHT, 0.1, 100.0)
ourShader.setMat4('projection', np.array(projection, dtype=GLfloat))
# render boxes
view = camera.GetViewMatrix()
ourShader.setMat4('view', np.array(view, dtype=GLfloat))
for i in range(10):
# calculate the model matrix for each object and pass
# it to shader before drawing
model = glm_mt.translate(glm.mat4(), cubePositions[i])
angle = 20.0 * i
model = glm_mt.rotate(model, np.radians(angle),
np.array([1, 0.3, 0.5]))
ourShader.setMat4('model', np.array(model, dtype=GLfloat))
glDrawArrays(GL_TRIANGLES, 0, 36)
# glfw: swap buffers and poll IO events (keys pressed/released,
# mouse moved etc.)
glfw.swap_buffers(window)
glfw.poll_events()
# optional: de-allocate all resources once they've outlived their purpose:
ourShader.unuse()
glBindVertexArray(0)
ourShader.delete()
glDeleteVertexArrays(1, (VAO, ))
glDeleteBuffers(1, (VBO, ))
# glfw: terminate, clearing all previously allocated GLFW resources.
glfw.terminate()
class Triangle:
def __init__(self):
self.window = prepare_window()
# Positions # Colors # Texture Coords
self.vertices = np.array(
[
[-0.5, 0.5, 1.0, 0.0, 0.0, 0.0, 1.0], # Top left
[0.5, 0.5, 0.0, 1.0, 0.0, 1.0, 1.0], # Top right
[0.5, -0.5, 0.0, 0.0, 1.0, 1.0, 0.0], # Bottom right
[-0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 0.0]
], # Bottom left
dtype=GLfloat)
self.indices = np.array([[0, 1, 2], [2, 3, 0]], dtype=GLuint)
self.make_vao()
self.texture1 = self.make_texture('../../images/sample.png',
unit=GL_TEXTURE0)
self.shader_program.setInt('ourTexture1', 0)
self.texture2 = self.make_texture('../../images/sample2.png',
unit=GL_TEXTURE1)
self.shader_program.setInt('ourTexture2', 1)
self.shader_program.unuse()
def __enter__(self):
glBindVertexArray(self.vao)
self.shader_program.use()
return self
def __exit__(self, type, value, traceback):
self.shader_program.unuse()
glBindVertexArray(0)
self.shader_program.delete()
glDeleteVertexArrays(1, (self.vao, ))
glDeleteBuffers(1, (self.ebo, ))
glDeleteBuffers(1, (self.vbo, ))
def make_vao(self):
self.vao = glGenVertexArrays(1)
glBindVertexArray(self.vao)
self.shader_program = OurShaderProgram(vert='texture.vert',
frag='texture.frag')
self.shader_program.use()
self.vbo = make_buffer_object(data=self.vertices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ARRAY_BUFFER')
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 7 * sizeof(GLfloat),
self.vbo)
glEnableVertexAttribArray(0)
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 7 * sizeof(GLfloat),
self.vbo + 2 * sizeof(GLfloat))
glEnableVertexAttribArray(1)
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 7 * sizeof(GLfloat),
self.vbo + 5 * sizeof(GLfloat))
glEnableVertexAttribArray(2)
self.ebo = make_buffer_object(data=self.indices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ELEMENT_ARRAY_BUFFER')
self.vbo.unbind()
glBindVertexArray(0)
def make_texture(self, image, unit=GL_TEXTURE0):
im = Image.open(image)
w, h = im.size
try:
im_bytes = im.tobytes("raw", "RGBA", 0, -1)
except ValueError:
im_bytes = im.tobytes("raw", "RGBX", 0, -1)
texture = glGenTextures(1)
with bindTexture(unit, GL_TEXTURE_2D, texture):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
GL_UNSIGNED_BYTE, im_bytes)
glGenerateMipmap(GL_TEXTURE_2D)
return texture
def draw(self):
glClear(GL_COLOR_BUFFER_BIT)
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, None)
glfw.swap_buffers(self.window)
class Triangle:
def __init__(self):
self.window = prepare_window()
# Positions # Colors # Texture Coords
self.vertices = np.array([[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[-0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[-0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[-0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[-0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[-0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[-0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[-0.5, -0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[-0.5, -0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 1.0, 1.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 0.0],
[-0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 0.0, 0.0],
[-0.5, 0.5, -0.5, 1.0, 1.0, 1.0, 0.0, 1.0],
[-1.0, -1.0, -0.5, 0.0, 0.0, 0.0, 0.0, 0.0],
[1.0, -1.0, -0.5, 0.0, 0.0, 0.0, 1.0, 0.0],
[1.0, 1.0, -0.5, 0.0, 0.0, 0.0, 1.0, 1.0],
[1.0, 1.0, -0.5, 0.0, 0.0, 0.0, 1.0, 1.0],
[-1.0, 1.0, -0.5, 0.0, 0.0, 0.0, 0.0, 1.0],
[-1.0, -1.0, -0.5, 0.0, 0.0, 0.0, 0.0, 0.0]],
dtype=GLfloat)
self.make_vao()
self.texture1 = self.make_texture('../images/sample.png',
unit=GL_TEXTURE0)
self.shader_program.setInt('texKitten', 0)
self.texture2 = self.make_texture('../images/sample2.png',
unit=GL_TEXTURE1)
self.shader_program.setInt('texPuppy', 1)
self.shader_program.unuse()
def __enter__(self):
glBindVertexArray(self.vao)
self.shader_program.use()
return self
def __exit__(self, type, value, traceback):
self.shader_program.unuse()
glBindVertexArray(0)
self.shader_program.delete()
glDeleteVertexArrays(1, (self.vao, ))
glDeleteBuffers(1, (self.vbo, ))
def make_vao(self):
self.vao = glGenVertexArrays(1)
glBindVertexArray(self.vao)
self.shader_program = OurShaderProgram(vert='texture.vert',
frag='texture.frag')
self.shader_program.use()
self.vbo = make_buffer_object(data=self.vertices.tostring(),
usage='GL_STATIC_DRAW',
target='GL_ARRAY_BUFFER')
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat),
self.vbo)
glEnableVertexAttribArray(0)
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat),
self.vbo + 3 * sizeof(GLfloat))
glEnableVertexAttribArray(1)
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat),
self.vbo + 6 * sizeof(GLfloat))
glEnableVertexAttribArray(2)
self.vbo.unbind()
glBindVertexArray(0)
def make_texture(self, image, unit=GL_TEXTURE0):
im = Image.open(image)
w, h = im.size
try:
im_bytes = im.tobytes("raw", "RGBA", 0, -1)
except ValueError:
im_bytes = im.tobytes("raw", "RGBX", 0, -1)
texture = glGenTextures(1)
with bindTexture(unit, GL_TEXTURE_2D, texture):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
GL_UNSIGNED_BYTE, im_bytes)
glGenerateMipmap(GL_TEXTURE_2D)
return texture
def draw(self):
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glDrawArrays(GL_TRIANGLES, 0, 36)
glEnable(GL_STENCIL_TEST)
# Draw floor
glStencilFunc(GL_ALWAYS, 1, 0xFF)
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE)
glStencilMask(0xFF)
glDepthMask(GL_FALSE)
glClear(GL_STENCIL_BUFFER_BIT)
glDrawArrays(GL_TRIANGLES, 36, 6)
# Draw cube reflection
glStencilFunc(GL_EQUAL, 1, 0xFF)
glStencilMask(0x00)
glDepthMask(GL_TRUE)