def initialize(self):
"""
Set up the viewport.
"""
x, y = self.viewSize
# Hide things that are behind other things
glEnable(GL_DEPTH_TEST)
# Create the OpenGL viewport, setting the size of the window (in pixels)
# and defining how the scene is projected onto it.
glViewport(0, 0, x, y)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
# Field of view, aspect ratio, near clipping, far clipping
gluPerspective(45.0, x / y, 0.5, 1000.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
# This makes material color properties be defined by glColor calls,
# necessary to get the right colors when lighting is enabled.
glEnable(GL_COLOR_MATERIAL)
# This might be desirable at some point, who knows.
# glColorMaterial(GL_FRONT_AND_BACK, GL_EMISSION)
# Make lighting work, because we like lights.
glEnable(GL_LIGHTING)
# Make textures work too.
glEnable(GL_TEXTURE_2D)
def _init_GL(self):
'''
'''
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glEnable(GL_BLEND)
glEnable(GL_LINE_SMOOTH)
glLineWidth(2.0)
glEnable(GL_DEPTH_TEST)
# glEnable(GL_TEXTURE_2D)
# set the lighting
self._set_lighting()
# set the background color
# glClearColor(0.15, 0.15, 0.15, 1)
glClearDepth(1.0)
# set the camera
glMatrixMode(GL_PROJECTION)
# glPushMatrix()
glLoadIdentity()
self._set_view_volume()
glMatrixMode(GL_MODELVIEW)
return
def _setup_lighting(self):
"""
[private method]
Set up lighting in the model.
[Called from both initializeGL and paintGL.]
"""
# note: there is some duplicated code in this method
# in GLPane_lighting_methods (has more comments) and ThumbView,
# but also significant differences. Should refactor sometime.
# [bruce 060415/080912 comment]
glEnable(GL_NORMALIZE)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
#bruce 060415 moved following from ThumbView.initializeGL to this split-out method...
#bruce 051212 revised lighting code to share prefs and common code with GLPane
# (to fix bug 1200 and mitigate bugs 475 and 1158;
# fully fixing those would require updating lighting in all ThumbView widgets
# whenever lighting prefs change, including making .update calls on them,
# and is not planned for near future since it's easy enough to close & reopen them)
try:
lights = self.shareWidget._lights #bruce 060415 shareWidget --> self.shareWidget; presumably always failed before that
###@@@ will this fix some bugs about common lighting prefs??
except:
lights = _default_lights
setup_standard_lights(lights, self.glprefs)
return
def main():
moons = [Moon(pos) for pos in d12_input]
glutInit(sys.argv)
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH)
glutInitWindowSize(800, 800)
glutInitWindowPosition(350, 200)
glutCreateWindow('name')
glClearColor(0., 0., 0., 1.)
glShadeModel(GL_SMOOTH)
glEnable(GL_CULL_FACE)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
lightZeroPosition = [10., 4., 10., 1.]
lightZeroColor = [0.8, 1.0, 0.8, 1.0]
glLightfv(GL_LIGHT0, GL_POSITION, lightZeroPosition)
glLightfv(GL_LIGHT0, GL_DIFFUSE, lightZeroColor)
glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 0.1)
glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05)
glEnable(GL_LIGHT0)
glutDisplayFunc(lambda: display_scene(moons))
glutTimerFunc(0, timer, 0)
glMatrixMode(GL_PROJECTION)
gluPerspective(40., 1., 1., 40.)
glMatrixMode(GL_MODELVIEW)
gluLookAt(0, -10, 10, 0, 0, 0, 0, 1, 0)
glPushMatrix()
glutMainLoop()
def get_ray(self, x, y):
""" Generate a ray beginning at the near plane, in the direction that the x, y coordinates are facing
Consumes: x, y coordinates of mouse on screen
Return: start, direction of the ray """
self.init_view()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
# get two points on the line.
start = numpy.array(gluUnProject(x, y, 0.001))
end = numpy.array(gluUnProject(x, y, 0.999))
# convert those points into a ray
direction = end - start
direction = direction / norm(direction)
return (start, direction)
def InitGL(self, Width, Height):
self.view_port_xr = 1
self.view_port_yr = 1
self.original_x = Width
self.original_y = Height
glMatrixMode(GL_PROJECTION)
glPushMatrix()
glLoadIdentity()
glOrtho(0, Width, 0, Height, -1, 1)
glScalef(1, -1, 1)
glTranslatef(0, -Height, 0)
glMatrixMode(GL_MODELVIEW)
glDisable(GL_DEPTH_TEST) # Disables Depth Testing
glShadeModel(GL_SMOOTH) # Enables Smooth Color Shading
# Anti-aliasing/prettyness stuff
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glEnable(GL_BLEND)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST)
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST)
glEnable(GL_LINE_SMOOTH)
glEnable(GL_POINT_SMOOTH)
glEnable(GL_POLYGON_SMOOTH)
glClearColor(background_color()[0],
background_color()[1],
background_color()[2], 1.0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
def _setup_lighting(self):
"""
[private method]
Set up lighting in the model (according to self._lights).
[Called from both initializeGL and paintGL.]
"""
# note: there is some duplicated code in this method
# in GLPane_lighting_methods (has more comments) and ThumbView,
# but also significant differences. Should refactor sometime.
# [bruce 060415/080912 comment]
glEnable(GL_NORMALIZE)
# bruce comment 050311: I don't know if this relates to lighting or not
# grantham 20051121: Yes, if NORMALIZE is not enabled (and normals
# aren't unit length or the modelview matrix isn't just rotation)
# then the lighting equation can produce unexpected results.
#bruce 050413 try to fix bug 507 in direction of lighting:
##k might be partly redundant now; not sure whether projection matrix needs to be modified here [bruce 051212]
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
#bruce 051212 moved most code from this method into new function, setup_standard_lights
setup_standard_lights(self._lights, self.glprefs)
# record what glprefs data was used by that, for comparison to see when we need to call it again
# (not needed for _lights since another system tells us when that changes)
self._last_glprefs_data_used_by_lights = glprefs_data_used_by_setup_standard_lights(
self.glprefs)
return
def render(self):
""" The render pass for the scene """
self.init_view()
# Enable lighting and color
glEnable(GL_LIGHTING)
glClearColor(0.4, 0.4, 0.4, 0.0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# Load the modelview matrix from the current state of the trackball
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
loc = self.interaction.translation
glTranslated(-loc[0], -loc[1], -loc[2])
glMultMatrixf(self.interaction.trackball.matrix)
# store the inverse of the current modelview.
currentModelView = numpy.array(glGetFloatv(GL_MODELVIEW_MATRIX))
self.modelView = numpy.transpose(currentModelView)
self.inverseModelView = inv(numpy.transpose(currentModelView))
# render the scene. This will call the render function for each object in the scene
self.scene.render()
# draw the grid
glDisable(GL_LIGHTING)
glCallList(G_OBJ_PLANE)
glPopMatrix()
# flush the buffers so that the scene can be drawn
glFlush()
def draw_circle(
self,
circle_center,
circle_normal,
circle_radius,
color=RGBA(1.1, 0.2, 0.8),
num_segments=20,
):
vertices = []
vertices.append((0, 0, 0)) # circle center
# create circle vertices in the xy plane
for i in np.linspace(0.0, 2.0 * math.pi, num_segments):
x = math.sin(i)
y = math.cos(i)
z = 0
vertices.append((x, y, z))
glPushMatrix()
glMatrixMode(GL_MODELVIEW)
glLoadMatrixf(
self.get_pupil_transformation_matrix(circle_normal, circle_center,
circle_radius))
glutils.draw_polyline((vertices),
color=color,
line_type=GL_TRIANGLE_FAN) # circle
glutils.draw_polyline([(0, 0, 0), (0, 0, 4)],
color=RGBA(0, 0, 0),
line_type=GL_LINES) # normal
glPopMatrix()
def reshape_function(self, w, h):
# prevent dividing by zero if window height is 0
if h == 0:
h = 1
self.window_width = w
self.window_height = h
proportional_rate = float(w) / h
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(60.0, proportional_rate, 0.1, 100)
camera_settings_matrix = [0 for i in range(9)]
# calculate camera's point of view
camera_settings_matrix = self.recalculate_camera_settings(
camera_settings_matrix)
# set camera's point of view
gluLookAt(camera_settings_matrix[0], camera_settings_matrix[1],
camera_settings_matrix[2], camera_settings_matrix[3],
camera_settings_matrix[4], camera_settings_matrix[5],
camera_settings_matrix[6], camera_settings_matrix[7],
camera_settings_matrix[8])
glScalef(self.scale_factor, self.scale_factor, self.scale_factor)
glMatrixMode(GL_MODELVIEW)
def compile_total_list(self):
if self.total_list is not None:
glNewList(self.total_list, GL_COMPILE)
# reset a few things
glDisable(GL_DEPTH_TEST)
glDisable(GL_LIGHTING)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
# change the modelview to camera coordinates
viewport = glGetIntegerv(GL_VIEWPORT)
width = viewport[2] - viewport[0]
height = viewport[3] - viewport[1]
if width > height:
w = float(width) / float(height)
h = 1.0
else:
w = 1.0
h = float(height) / float(width)
glScalef(2 / w, 2 / h, 1.0)
glCallList(self.draw_list)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEndList()
def resizeGL(self, width, height):
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
aspect = width / height
gluPerspective(60.0, aspect, 1, 400)
glMatrixMode(GL_MODELVIEW)
def drawWheels():
global seconds
wheelXOff = 2
wheelZOff = 2
wheelSpreed = 10
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glTranslated(-wheelXOff, 0, wheelZOff + seconds - 10)
glRotated(seconds * wheelSpreed, 1, 0, 0)
glRotated(90, 0, 1, 0)
drawTire()
glPopMatrix()
glPushMatrix()
glTranslated(wheelXOff, 0, wheelZOff + seconds - 10)
glRotated(seconds * wheelSpreed, 1, 0, 0)
glRotated(90, 0, 1, 0)
drawTire()
glPopMatrix()
glPushMatrix()
glTranslated(-wheelXOff, 0, -wheelZOff + seconds - 10)
glRotated(seconds * wheelSpreed, 1, 0, 0)
glRotated(90, 0, 1, 0)
drawTire()
glPopMatrix()
glPushMatrix()
glTranslated(wheelXOff, 0, -wheelZOff + seconds - 10)
glRotated(seconds * wheelSpreed, 1, 0, 0)
glRotated(90, 0, 1, 0)
drawTire()
glPopMatrix()
def compile_total_list(self):
if self.total_list is not None:
glNewList(self.total_list, GL_COMPILE)
# reset a few things
glDisable(GL_DEPTH_TEST)
glDisable(GL_LIGHTING)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
# change the modelview to camera coordinates
viewport = glGetIntegerv(GL_VIEWPORT)
width = viewport[2] - viewport[0]
height = viewport[3] - viewport[1]
if width > height:
w = float(width) / float(height)
h = 1.0
else:
w = 1.0
h = float(height) / float(width)
glScalef(2/w, 2/h, 1.0)
glCallList(self.draw_list)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEndList()
def render(self):
#init shadow matrix
self.init_view()
#open light
glEnable(GL_LIGHTING)
#clear color and depth caches
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
#set model view matrix(danwei matrix is ok)
#set trackball's rotate matrix as Modelview
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
#replace now-matrix with hengdeng matrix
glLoadIdentity()
glMultMatrixf(self.interaction.trackball.matrix)
#save Modelview matrix, later change system with anti-matrix
currentModelView = numpy.array(glGetFloatv(GL_MODELVIEW_MATRIX))
self.modelView = numpy.transpose(currentModelView)
self.inverseModelView = inv(numpy.transpose(currentModelView))
#rend the scene
self.scene.render()
#after each shadow , huifu light state
glDisable(GL_LIGHTING)
glPopMatrix()
glFlush()
def reshape(self, width, height):
glClearColor(0.0, 0.0, 0.0, 1.0)
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(60, width / height, 1.0, 10000.0)
glMatrixMode(GL_MODELVIEW)
def _setup_lighting(self):
"""
[private method]
Set up lighting in the model.
[Called from both initializeGL and paintGL.]
"""
# note: there is some duplicated code in this method
# in GLPane_lighting_methods (has more comments) and ThumbView,
# but also significant differences. Should refactor sometime.
# [bruce 060415/080912 comment]
glEnable(GL_NORMALIZE)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
#bruce 060415 moved following from ThumbView.initializeGL to this split-out method...
#bruce 051212 revised lighting code to share prefs and common code with GLPane
# (to fix bug 1200 and mitigate bugs 475 and 1158;
# fully fixing those would require updating lighting in all ThumbView widgets
# whenever lighting prefs change, including making .update calls on them,
# and is not planned for near future since it's easy enough to close & reopen them)
try:
lights = self.shareWidget._lights #bruce 060415 shareWidget --> self.shareWidget; presumably always failed before that
###@@@ will this fix some bugs about common lighting prefs??
except:
lights = _default_lights
setup_standard_lights( lights, self.glprefs)
return
def do_configure_event(self, event):
ClientWindow.do_configure_event(self, event)
drawable = self.glarea.get_gl_drawable()
context = self.glarea.get_gl_context()
self.yuv420_shader = None
# Re-create textures
self.current_mode = GLClientWindow.MODE_UNINITIALIZED
if not drawable.gl_begin(context):
raise Exception("** Cannot create OpenGL rendering context!")
w, h = self.get_size()
log("Configure widget size: %d x %d" % (w, h))
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glDisable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(3)
drawable.gl_end()
def render(self):
""" The render pass for the scene """
self.init_view()
# Enable lighting and color
glEnable(GL_LIGHTING)
glClearColor(0.4, 0.4, 0.4, 0.0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# Load the modelview matrix from the current state of the trackball
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
loc = self.interaction.translation
glTranslated(-loc[0], -loc[1], -loc[2])
glMultMatrixf(self.interaction.trackball.matrix)
# store the inverse of the current modelview.
currentModelView = numpy.array(glGetFloatv(GL_MODELVIEW_MATRIX))
self.modelView = numpy.transpose(currentModelView)
self.inverseModelView = inv(numpy.transpose(currentModelView))
# render the scene. This will call the render function for each object in the scene
self.scene.render()
# draw the grid
glDisable(GL_LIGHTING)
glCallList(G_OBJ_PLANE)
glPopMatrix()
# flush the buffers so that the scene can be drawn
glFlush()
def do_configure_event(self, event):
ClientWindow.do_configure_event(self, event)
drawable = self.glarea.get_gl_drawable()
context = self.glarea.get_gl_context()
self.yuv420_shader = None
# Re-create textures
self.current_mode = GLClientWindow.MODE_UNINITIALIZED
if not drawable.gl_begin(context):
raise Exception("** Cannot create OpenGL rendering context!")
w, h = self.get_size()
log("Configure widget size: %d x %d" % (w, h))
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glDisable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(3)
drawable.gl_end()
def _setup_lighting(self):
"""
[private method]
Set up lighting in the model (according to self._lights).
[Called from both initializeGL and paintGL.]
"""
# note: there is some duplicated code in this method
# in GLPane_lighting_methods (has more comments) and ThumbView,
# but also significant differences. Should refactor sometime.
# [bruce 060415/080912 comment]
glEnable(GL_NORMALIZE)
# bruce comment 050311: I don't know if this relates to lighting or not
# grantham 20051121: Yes, if NORMALIZE is not enabled (and normals
# aren't unit length or the modelview matrix isn't just rotation)
# then the lighting equation can produce unexpected results.
#bruce 050413 try to fix bug 507 in direction of lighting:
##k might be partly redundant now; not sure whether projection matrix needs to be modified here [bruce 051212]
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
#bruce 051212 moved most code from this method into new function, setup_standard_lights
setup_standard_lights( self._lights, self.glprefs)
# record what glprefs data was used by that, for comparison to see when we need to call it again
# (not needed for _lights since another system tells us when that changes)
self._last_glprefs_data_used_by_lights = glprefs_data_used_by_setup_standard_lights( self.glprefs)
return
def draw_colour_legend(self):
menubar_height = self.logo.size[1] + 4
width = glutGet(GLUT_WINDOW_WIDTH)
height = glutGet(GLUT_WINDOW_HEIGHT)
# Colour legend
left_x = width - 20
right_x = width - 10
min_y = menubar_height + 5
max_y = height - 20
time_step_size = math.ceil(self.max_hit_time / 20 / 50) * 50
hit_times = list(range(int(self.min_hit_time), int(self.max_hit_time), int(time_step_size)))
if len(hit_times) > 1:
segment_height = int((max_y - min_y) / len(hit_times))
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glDisable(GL_LIGHTING)
glBegin(GL_QUADS)
for hit_time in hit_times:
segment_nr = hit_times.index(hit_time)
glColor3f(*self.spectrum(hit_time))
glVertex2f(left_x, max_y - segment_height * segment_nr)
glVertex2f(right_x, max_y - segment_height * segment_nr)
glColor3f(*self.spectrum(hit_time + time_step_size))
glVertex2f(left_x, max_y - segment_height * (segment_nr + 1))
glVertex2f(right_x, max_y - segment_height * (segment_nr + 1))
glEnd()
# Colour legend labels
self.colourist.now_text()
for hit_time in hit_times:
segment_nr = hit_times.index(hit_time)
draw_text_2d("{0:>5}ns".format(hit_time), width - 80, (height - max_y) + segment_height * segment_nr)
def SetupProjection(self, width = 640,
height = 480,
zNear = 5.,
zFar = 300.):
""" Sets up the projection matrix for opengl.
"""
# set the projection transformation
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
#TODO: replace the glu call with something else.
#gluPerspective(45.0, float(width) / height, scale * 50.0, scale * 1000.0)
#gluPerspective(45.0, float(self.width) / float(self.height), 5.0, 1000.0)
self.zNear = zNear
self.zFar = zFar
self.buffer_calc_a = self.zFar / ( self.zFar - self.zNear )
self.buffer_calc_b = self.zFar * self.zNear / ( self.zNear - self.zFar )
gluPerspective(45.0,
float(width) / float(height),
self.zNear,
self.zFar)
self.gl_projection_matrix = glGetFloatv(GL_PROJECTION_MATRIX)
# set the model transformation
glMatrixMode(GL_MODELVIEW)
def make_coord_system_eye_camera_based(window_size, focal_length):
camera_fov = math.degrees(2.0 * math.atan(window_size[1] / (2.0 * focal_length)))
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(camera_fov, float(window_size[0]) / window_size[1], 0.1, 2000.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def drawFilledCircle(color, center, radius, normal):
"""
Scale, rotate/translate the unit circle properly.
Added a filled circle variant, piotr 080405
"""
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glColor3fv(color)
glDisable(GL_LIGHTING)
glTranslatef(center[0], center[1], center[2])
rQ = Q(V(0, 0, 1), normal)
rotAngle = rQ.angle*180.0/pi
#This may cause problems as proved before in Linear motor display.
#rotation around (0, 0, 0)
#if vlen(V(rQ.x, rQ.y, rQ.z)) < 0.00005:
# rQ.x = 1.0
glRotatef(rotAngle, rQ.x, rQ.y, rQ.z)
glScalef(radius, radius, 1.0)
glCallList(drawing_globals.filledCircleList)
glEnable(GL_LIGHTING)
glPopMatrix()
return
def render(self):
#初始化投影矩阵
self.init_view()
#启动光照
glEnable(GL_LIGHTING)
#清空颜色缓存与深度缓存
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
#设置模型视图矩阵，这节课先用单位矩阵就行了。
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
glMultMatrixf(self.interaction.trackball.matrix)
# 存储ModelView矩阵与其逆矩阵之后做坐标系转换用
currentModelView = numpy.array(glGetFloatv(GL_MODELVIEW_MATRIX))
self.modelView = numpy.transpose(currentModelView)
self.inverseModelView = inv(numpy.transpose(currentModelView))
#渲染场景
self.scene.render()
#每次渲染后复位光照状态
glDisable(GL_LIGHTING)
glCallList(G_OBJ_PLANE)
glPopMatrix()
#把数据刷新到显存上
glFlush()
def drawFilledCircle(color, center, radius, normal):
"""
Scale, rotate/translate the unit circle properly.
Added a filled circle variant, piotr 080405
"""
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glColor3fv(color)
glDisable(GL_LIGHTING)
glTranslatef(center[0], center[1], center[2])
rQ = Q(V(0, 0, 1), normal)
rotAngle = rQ.angle * 180.0 / pi
#This may cause problems as proved before in Linear motor display.
#rotation around (0, 0, 0)
#if vlen(V(rQ.x, rQ.y, rQ.z)) < 0.00005:
# rQ.x = 1.0
glRotatef(rotAngle, rQ.x, rQ.y, rQ.z)
glScalef(radius, radius, 1.0)
glCallList(drawing_globals.filledCircleList)
glEnable(GL_LIGHTING)
glPopMatrix()
return
def keyboard(key, x, y):
global mat, rot, animTrans, animRot
if key == chr(27):
import sys
sys.exit(0)
#Your Code Here
if key == b'a':
mat[2] = mat[2] - math.cos(math.radians(rot[0] + 90))
mat[0] = mat[0] + math.sin(math.radians(rot[0] + 90))
if key == b'd':
mat[2] = mat[2] + math.cos(math.radians(rot[0] + 90))
mat[0] = mat[0] - math.sin(math.radians(rot[0] + 90))
if key == b'w':
mat[2] = mat[2] + math.cos(math.radians(rot[0]))
mat[0] = mat[0] - math.sin(math.radians(rot[0]))
if key == b's':
mat[2] = mat[2] - math.cos(math.radians(rot[0]))
mat[0] = mat[0] + math.sin(math.radians(rot[0]))
if key == b'q':
rot[0] = rot[0] - 1
if key == b'e':
rot[0] = rot[0] + 1
if key == b'r':
mat[1] = mat[1] - 1
if key == b'f':
mat[1] = mat[1] + 1
if key == b'h':
mat = [0, -5, -35]
rot = [0, 0, 0]
animTrans = [0, 0, 0]
animRot = [0, 0, 0]
if key == b'o':
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-50, 50, -50, 50, .1, 50)
#glOrtho()
if key == b'p':
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(50, DISPLAY_HEIGHT / DISPLAY_WIDTH, .1, 200)
if key == b'z':
import sys
sys.exit(0)
glutPostRedisplay()
class GLPixmapBacking(PixmapBacking):
def __init__(self, wid, w, h, old_backing, mmap_enabled, mmap):
Backing.__init__(self, wid, mmap_enabled, mmap)
display_mode = (gtk.gdkgl.MODE_RGB |
gtk.gdkgl.MODE_SINGLE)
# We use single buffer because double doesn't work, figure out why
try:
self.glconfig = gtk.gdkgl.Config(mode=display_mode)
except gtk.gdkgl.NoMatches, e:
raise Exception("could not find matching mode for %s: %s" % (display_mode, e))
self._backing = gtk.gdkgl.ext(gdk.Pixmap(gdk.get_default_root_window(), w, h))
log.info("Creating GL pixmap size %d %d " % (w, h))
self.gldrawable = self._backing.set_gl_capability(self.glconfig)
log.info("drawable ok")
# Then create an indirect OpenGL rendering context.
self.glcontext = gtk.gdkgl.Context(self.gldrawable,
direct=True)
log.info("context ok")
if not self.glcontext:
raise Exception("** Cannot create OpenGL rendering context!")
log.info("OpenGL rendering context is created.")
self.texture = None
self.textures = [ 0 ]
self.use_openGL_CSC = True
self.yuv420_shader = None
# OpenGL begin
if not self.gldrawable.gl_begin(self.glcontext):
return False
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
self.gldrawable.gl_end()
cr = self._backing.cairo_create()
if old_backing is not None and old_backing._backing is not None:
# Really we should respect bit-gravity here but... meh.
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.set_source_pixmap(old_backing._backing, 0, 0)
cr.paint()
old_w, old_h = old_backing._backing.get_size()
cr.move_to(old_w, 0)
cr.line_to(w, 0)
cr.line_to(w, h)
cr.line_to(0, h)
cr.line_to(0, old_h)
cr.line_to(old_w, old_h)
cr.close_path()
else:
cr.rectangle(0, 0, w, h)
cr.set_source_rgb(1, 1, 1)
cr.fill()
def reshape(self, width, height):
r = float(width) / float(height)
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(60.0, r, 1., 50.)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def _set_view(self):
log.info("_set_view()")
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
w, h = self.size
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def enable(self):
# setup projection and model view matrix
glMatrixMode (GL_PROJECTION)
glLoadMatrixf (self.projectionCropMatrix)
glMatrixMode (GL_MODELVIEW)
glLoadMatrixf (self.modelViewMatrix)
self._projectionUpdatedThisFrame = False
def initGL(self):
"""
initialize GL
"""
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluOrtho2D(self.clipping_area[0], self.clipping_area[1],
self.clipping_area[2], self.clipping_area[3])
def _set_view(self):
log.info("_set_view()")
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
w, h = self.size
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def setupViewport(self, width, height):
side = min(width, height)
glViewport((width - side) // 2, (height - side) // 2, side, side)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0)
glMatrixMode(GL_MODELVIEW)
def setupViewport(self, width, height):
side = min(width, height)
glViewport((width - side) // 2, (height - side) // 2, side, side)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0)
glMatrixMode(GL_MODELVIEW)
def render(self):
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glTranslated(self.center[0], self.center[1], self.center[2])
glCallList(G_OBJ_CUBE)
glPopMatrix()
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
def resizeGL(self, width, height):
glViewport(0, 0, width, height if height else 1)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
self.aspect = width / float(height)
gluPerspective(45., self.aspect, 1., 100.)
glMatrixMode(GL_MODELVIEW)
def viewport_changed(self):
"""This method is called when the view's size has changed, with
the view's OpenGL context as the current context, and the OpenGL
viewport set to (0, 0, width, height). The default implementation
loads an identity projection matrix and calls init_projection()."""
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
self.init_projection()
def viewport_changed(self):
"""This method is called when the view's size has changed, with
the view's OpenGL context as the current context, and the OpenGL
viewport set to (0, 0, width, height). The default implementation
loads an identity projection matrix and calls init_projection()."""
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
self.init_projection()
def draw(self):
# this code is modified from GLPane.drawcompass
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
glMatrixMode(
GL_PROJECTION
) # WARNING: we're now in nonstandard matrixmode (for sake of gluPickMatrix and glOrtho -- needed??##k)
glPushMatrix()
glLoadIdentity()
try:
glpane = self.env.glpane
## aspect = 1.0 ###WRONG -- should use glpane.aspect (which exists as of 070919)
aspect = glpane.aspect # revised by bruce 070919, UNTESTED
corner = self.corner
delegate = self.delegate
###e should get glpane to do this for us (ie call a method in it to do this if necessary)
# (this code is copied from it)
glselect = glpane.current_glselect
if glselect:
# print "%r (ipath %r) setting up gluPickMatrix" % (self, self.ipath)
x, y, w, h = glselect
gluPickMatrix(
x, y, w, h, glGetIntegerv(GL_VIEWPORT) # k is this arg needed? it might be the default...
)
# the first three cases here are still ###WRONG
if corner == UPPER_RIGHT:
glOrtho(-50 * aspect, 5.5 * aspect, -50, 5.5, -5, 500) # Upper Right
elif corner == UPPER_LEFT:
glOrtho(-5 * aspect, 50.5 * aspect, -50, 5.5, -5, 500) # Upper Left
elif corner == LOWER_LEFT:
glOrtho(-5 * aspect, 50.5 * aspect, -5, 50.5, -5, 500) # Lower Left
else:
## glOrtho(-50*aspect, 5.5*aspect, -5, 50.5, -5, 500) # Lower Right
## glOrtho(-50*aspect, 0, 0, 50, -5, 500) # Lower Right [used now] -- x from -50*aspect to 0, y (bot to top) from 0 to 50
glOrtho(-glpane.width * PIXELS, 0, 0, glpane.height * PIXELS, -5, 500)
# approximately right for the checkbox, but I ought to count pixels to be sure (note, PIXELS is a pretty inexact number)
glMatrixMode(GL_MODELVIEW) ###k guess 061210 at possible bugfix (and obviously needed in general) --
# do this last to leave the matrixmode standard
# (status of bugs & fixes unclear -- hard to test since even Highlightable(projection=True) w/o any change to
# projection matrix (test _9cx) doesn't work!)
offset = (-delegate.bright, delegate.bbottom) # only correct for LOWER_RIGHT
glTranslatef(offset[0], offset[1], 0)
self.drawkid(delegate) ## delegate.draw()
finally:
glMatrixMode(GL_PROJECTION)
glPopMatrix()
glMatrixMode(GL_MODELVIEW) # be sure to do this last, to leave the matrixmode standard
glPopMatrix()
return
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s",
self, w, h, drawable)
if not drawable:
return None
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
self.gl_marker("Initializing GL context for window size %d x %d" %
(w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0,
self.texture_pixel_format, w, h, 0,
self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,
self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
return drawable
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("GL Pixmap backing size: %d x %d, drawable=%s", w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR() == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY() == True:
log.info("Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame.")
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY() == True:
glFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("textures for wid=%s of size %s : %s", self.wid, self.size, self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
self.gl_setup = True
return drawable
def draw(self):
# this code is modified from GLPane.drawcompass
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
glMatrixMode(GL_PROJECTION) # WARNING: we're now in nonstandard matrixmode (for sake of gluPickMatrix and glOrtho -- needed??##k)
glPushMatrix()
glLoadIdentity()
try:
glpane = self.env.glpane
## aspect = 1.0 ###WRONG -- should use glpane.aspect (which exists as of 070919)
aspect = glpane.aspect # revised by bruce 070919, UNTESTED
corner = self.corner
delegate = self.delegate
###e should get glpane to do this for us (ie call a method in it to do this if necessary)
# (this code is copied from it)
glselect = glpane.current_glselect
if glselect:
# print "%r (ipath %r) setting up gluPickMatrix" % (self, self.ipath)
x,y,w,h = glselect
gluPickMatrix(
x,y,
w,h,
glGetIntegerv( GL_VIEWPORT ) #k is this arg needed? it might be the default...
)
# the first three cases here are still ###WRONG
if corner == UPPER_RIGHT:
glOrtho(-50*aspect, 5.5*aspect, -50, 5.5, -5, 500) # Upper Right
elif corner == UPPER_LEFT:
glOrtho(-5*aspect, 50.5*aspect, -50, 5.5, -5, 500) # Upper Left
elif corner == LOWER_LEFT:
glOrtho(-5*aspect, 50.5*aspect, -5, 50.5, -5, 500) # Lower Left
else:
## glOrtho(-50*aspect, 5.5*aspect, -5, 50.5, -5, 500) # Lower Right
## glOrtho(-50*aspect, 0, 0, 50, -5, 500) # Lower Right [used now] -- x from -50*aspect to 0, y (bot to top) from 0 to 50
glOrtho(-glpane.width * PIXELS, 0, 0, glpane.height * PIXELS, -5, 500)
# approximately right for the checkbox, but I ought to count pixels to be sure (note, PIXELS is a pretty inexact number)
glMatrixMode(GL_MODELVIEW) ###k guess 061210 at possible bugfix (and obviously needed in general) --
# do this last to leave the matrixmode standard
# (status of bugs & fixes unclear -- hard to test since even Highlightable(projection=True) w/o any change to
# projection matrix (test _9cx) doesn't work!)
offset = (-delegate.bright, delegate.bbottom) # only correct for LOWER_RIGHT
glTranslatef(offset[0], offset[1], 0)
self.drawkid( delegate) ## delegate.draw()
finally:
glMatrixMode(GL_PROJECTION)
glPopMatrix()
glMatrixMode(GL_MODELVIEW) # be sure to do this last, to leave the matrixmode standard
glPopMatrix()
return
def render(self):
""" render the AABB. This can be useful for debugging purposes """
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glTranslated(self.center[0], self.center[1], self.center[2])
glCallList(G_OBJ_CUBE)
glPopMatrix()
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
def draw_line(x1, y1, x2, y2):
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, 730, 0, 650, 0, 1)
glMatrixMode(GL_MODELVIEW)
glBegin(GL_LINES)
glVertex2f(x1, y1)
glVertex2f(x2, y2)
glEnd()
def render(self):
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glRotate(self.pitch, 1, 0, 0)
glRotate(self.yaw, 0, 1, 0)
x, y, z = self.position
glTranslate(-x, -y, -z)
def render(self):
""" 渲染显示包围盒，可在调试的时候使用 """
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glTranslated(self.center[0], self.center[1], self.center[2])
glCallList(G_OBJ_CUBE)
glPopMatrix()
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
def resizeGL(self, width, height):
if height == 0:
height = 1
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(45.0, float(width) / float(height), 0.1, 100.0)
glMatrixMode(GL_MODELVIEW)
def resizeGL(self, width, height):
if height == 0:
height = 1
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(45.0, float(width)/float(height), 0.1, 100.0)
glMatrixMode(GL_MODELVIEW)
def translate(self, trans):
# translate the object
self.makeCurrent()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslated(trans[0], trans[1], trans[2])
glMultMatrixd(self._modelview_matrix)
# update _modelview_matrix
self._modelview_matrix = glGetDoublev(GL_MODELVIEW_MATRIX)
def resize(self):
pygame.display.set_mode((self.W, self.H), pygame.OPENGL | pygame.DOUBLEBUF | pygame.RESIZABLE)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluOrtho2D(0, self.W, self.H, 0)
glViewport(0, 0, self.W, self.H)
# gluOrtho2D(self.L * (self.W / self.H), self.R * (self.W / self.H), self.B, self.T)
# gluOrtho2D(self.L, self.R, self.B, self.T)
pygame.display.flip()
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
log("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s", self, w, h, drawable)
if not drawable:
return None
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
return drawable
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
w, h = self.size
self.gl_marker("Initializing GL context for window size %d x %d", w, h)
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
def set_projection(self, near, far, fovy):
self._near = near
self._far = far
self._fovy = fovy
self.makeCurrent()
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
height = max(self.height(), 1)
gluPerspective(self._fovy, float(self.width()) / float(height), self._near, self._far)
self.updateGL()
def initializeGL(self):
glClearColor(*self.color_background)
glClearDepth(1.0)
glDepthFunc(GL_LESS)
glEnable(GL_DEPTH_TEST)
glShadeModel(GL_SMOOTH)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glMatrixMode(GL_MODELVIEW)
def reshape(w, h):
glViewport(0, 0, w, h)
ratio = float(w) / h
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
viewport_center = HEIGHT * ratio / 2
photo_center = HEIGHT * mosaic_factory.ratio / 2
left = photo_center - viewport_center
right = photo_center + viewport_center
glOrtho(left, right, 0.0, HEIGHT, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def draw_rect(x, y, width, height):
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, 730, 0, 650, 0, 1)
glMatrixMode(GL_MODELVIEW)
glColor4f(0.71, 0.83, 1, 0.3)
glBegin(GL_QUADS)
glVertex2f(x, y)
glVertex2f(x + width, y)
glVertex2f(x + width, y + height)
glVertex2f(x, y + height)
glEnd()
def rotate(self, axis, angle):
# rotate the object
self.makeCurrent()
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
t = [self._modelview_matrix[3][0], self._modelview_matrix[3][1], self._modelview_matrix[3][2]]
glTranslatef(t[0], t[1], t[2])
glRotated(angle, axis[0], axis[1], axis[2])
glTranslatef(-t[0], -t[1], -t[2])
glMultMatrixd(self._modelview_matrix)
# update _modelview_matrix
self._modelview_matrix = glGetDoublev(GL_MODELVIEW_MATRIX)
def init_view(self):
""" initialize the projection matrix """
xSize, ySize = glutGet(GLUT_WINDOW_WIDTH), glutGet(GLUT_WINDOW_HEIGHT)
aspect_ratio = float(xSize) / float(ySize)
# load the projection matrix. Always the same
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glViewport(0, 0, xSize, ySize)
gluPerspective(70, aspect_ratio, 0.1, 1000.0)
glTranslated(0, 0, -15)