def draw_internal(self, gl):
if self.render_state.night_vision_mode:
return
gl.glEnableClientState(gl.GL_VERTEX_ARRAY)
gl.glEnableClientState(gl.GL_COLOR_ARRAY)
gl.glDisableClientState(gl.GL_TEXTURE_COORD_ARRAY)
gl.glEnable(gl.GL_CULL_FACE)
gl.glFrontFace(gl.GL_CW)
gl.glCullFace(gl.GL_BACK)
gl.glShadeModel(gl.GL_SMOOTH)
gl.glPushMatrix()
# Rotate the sky box to the position of the sun.
cp = cross_product(Vector3(0, 1, 0), self.sun_pos)
cp = normalized(cp)
angle = 180.0 / math.pi * math.acos(self.sun_pos.y)
gl.glRotatef(angle, cp.x, cp.y, cp.z)
self.vertex_buffer.set(gl)
self.color_buffer.set(gl)
self.index_buffer.draw(gl, gl.GL_TRIANGLES)
gl.glPopMatrix()
def draw_internal(self, gl):
if self.render_state.night_vision_mode:
return
gl.glEnableClientState(gl.GL_VERTEX_ARRAY)
gl.glEnableClientState(gl.GL_COLOR_ARRAY)
gl.glDisableClientState(gl.GL_TEXTURE_COORD_ARRAY)
gl.glEnable(gl.GL_CULL_FACE)
gl.glFrontFace(gl.GL_CW)
gl.glCullFace(gl.GL_BACK)
gl.glShadeModel(gl.GL_SMOOTH)
gl.glPushMatrix()
# Rotate the sky box to the position of the sun.
cp = cross_product(Vector3(0, 1, 0), self.sun_pos)
cp = normalized(cp)
angle = 180.0 / math.pi * math.acos(self.sun_pos.y)
gl.glRotatef(angle, cp.x, cp.y, cp.z)
self.vertex_buffer.set(gl)
self.color_buffer.set(gl)
self.index_buffer.draw(gl, gl.GL_TRIANGLES)
gl.glPopMatrix()
def set_view_up_direction(self, viewer_up):
if abs(viewer_up.y) < 0.999:
cp = cross_product(viewer_up, Vector3(0, 0, 0))
cp = normalized(cp)
self.geo_to_viewer_transform = create_rotation(math.acos(viewer_up.y), cp)
else:
self.geo_to_viewer_transform = create_identity()
self.must_update_transformed_orientation = True
def set_up_vector(self, up_v):
p = self.geocentric_coords
u = negate(normalized(cross_product(p, up_v)))
v = cross_product(u, p)
v.scale(self.image_scale)
u.scale(self.image_scale)
self.ux = u.x
self.uy = u.y
self.uz = u.z
self.vx = v.x
self.vy = v.y
self.vz = v.z
def update_objects(self, lines, update_type):
# We only care about updates to positions, ignore any other updates.
if not (self.update_type.Reset in update_type) and \
not (self.update_type.UpdatePositions in update_type):
return
num_line_segments = 0
for l_source in lines:
num_line_segments += len(l_source.gc_vertices) - 1
# To render everything in one call, we render everything as a line list
# rather than a series of line strips.
num_vertices = 4 * num_line_segments
num_indices = 6 * num_line_segments
vb = self.vertex_buffer
vb.reset(4 * num_line_segments)
cb = self.color_buffer
cb.reset(4 * num_line_segments)
tb = self.text_coord_buffer
tb.reset(num_vertices)
ib = self.index_buffer
ib.reset(num_indices)
# See comment in PointObjectManager for justification of this calculation.
fovy_in_radians = 60 * math.pi / 180.0
size_factor = math.tan(fovy_in_radians * 0.5) / 480.0
bool_opaque = True
vertex_index = 0
for l_source in lines:
coords_list = l_source.gc_vertices
if len(coords_list) < 2:
continue
# If the color isn't fully opaque, set opaque to false.
color = l_source.color
bool_opaque &= int(color & 0xff000000) == 0xff000000
# Add the vertices.
for i in range(0, len(coords_list) - 1):
p1 = coords_list[i]
p2 = coords_list[i + 1]
u = difference(p2, p1)
# The normal to the quad should face the origin at its midpoint.
avg = sum_vectors(p1, p2)
avg.scale(0.5)
# I'm assum_vectorsing that the points will already be on a unit sphere. If this is not the case,
# then we should normalize it here.
v = normalized(cross_product(u, avg))
v.scale(size_factor * l_source.line_width)
# Add the vertices
# Lower left corner
vb.add_point(difference(p1, v))
cb.add_color(color)
tb.add_text_coord(0, 1)
# Upper left corner
vb.add_point(sum_vectors(p1, v))
cb.add_color(color)
tb.add_text_coord(0, 0)
# Lower left corner
vb.add_point(difference(p2, v))
cb.add_color(color)
tb.add_text_coord(1, 1)
# Upper left corner
vb.add_point(sum_vectors(p2, v))
cb.add_color(color)
tb.add_text_coord(1, 0)
# Add the indices
bottom_left = vertex_index
top_left = vertex_index + 1
bottom_right = vertex_index + 2
top_right = vertex_index + 3
vertex_index += 4
# First triangle
ib.add_index(bottom_left)
ib.add_index(top_left)
ib.add_index(bottom_right)
# Second triangle
ib.add_index(bottom_right)
ib.add_index(top_left)
ib.add_index(top_right)
self.opaque = bool_opaque
def update_objects(self, points, update_type):
#only_update_points = True
# We only care about updates to positions, ignore any other updates.
if self.update_type.Reset in update_type:
#only_update_points = False
pass
elif self.update_type.UpdatePositions in update_type:
# Sanity check: make sure the number of points is unchanged.
if len(points) != self.num_points:
return
else:
return
self.num_points = len(points)
self.sky_regions.clear()
if Debug.ALLREGIONS == "YES": self.COMPUTE_REGIONS = False
region = SkyRegionMap.CATCHALL_REGION_ID
if self.COMPUTE_REGIONS:
# Find the region for each point, and put it in a separate list
# for that region.
for point in points:
if len(points) < self.MINIMUM_NUM_POINTS_FOR_REGIONS:
region = SkyRegionMap.CATCHALL_REGION_ID
else:
region = self.sky_regions.get_object_region(point.geocentric_coords)
# self.sky_regions.get_region_data(region) is a RegionData instance
data_for_region = self.sky_regions.get_region_data(region)
data_for_region.sources.append(point)
else:
self.sky_regions.get_region_data(region).sources = points
# Generate the resources for all of the regions.
for data in self.sky_regions.region_data.values():
num_vertices = 4 * len(data.sources)
num_indices = 6 * len(data.sources)
data.vertex_buffer.reset(num_vertices)
data.color_buffer.reset(num_vertices)
data.text_coord_buffer.reset(num_vertices)
data.index_buffer.reset(num_indices)
up = Vector3(0, 1, 0)
# By inspecting the perspective projection matrix, you can show that,
# to have a quad at the center of the screen to be of size k by k
# pixels, the width and height are both:
# k * tan(fovy / 2) / screenHeight
# This is not difficult to derive. Look at the transformation matrix
# in SkyRenderer if you're interested in seeing why this is true.
# I'm arbitrarily deciding that at a 60 degree field of view, and 480
# pixels high, a size of 1 means "1 pixel," so calculate size_factor
# based on this. These numbers mostly come from the fact that that's
# what I think looks reasonable.
fovy_in_radians = 60 * math.pi / 180.0
size_factor = math.tan(fovy_in_radians * 0.5) / 480
bottom_left_pos = Vector3(0, 0, 0)
top_left_pos = Vector3(0, 0, 0)
bottom_right_pos = Vector3(0, 0, 0)
top_right_pos = Vector3(0, 0, 0)
su = Vector3(0, 0, 0)
sv = Vector3(0, 0, 0)
index = 0
star_width_in_texels = 1.0 / self.NUM_STARS_IN_TEXTURE
for p_source in data.sources:
color = 0xFF000000 | int(p_source.color) # Force alpha to 0xff
if Debug.COLOR == "WHITE ONLY":
color = 0xFFFFFFFF
bottom_left = index
top_left = index + 1
bottom_right = index + 2
top_right = index + 3
index += 4
# First triangle
data.index_buffer.add_index(bottom_left)
data.index_buffer.add_index(top_left)
data.index_buffer.add_index(bottom_right)
# Second triangle
data.index_buffer.add_index(top_right);
data.index_buffer.add_index(bottom_right);
data.index_buffer.add_index(top_left);
# PointSource.getPointShape().getImageIndex(); is always 0
star_index = 0
tex_offset_u = star_width_in_texels * star_index
data.text_coord_buffer.add_text_coord(tex_offset_u, 1);
data.text_coord_buffer.add_text_coord(tex_offset_u, 0);
data.text_coord_buffer.add_text_coord(tex_offset_u + star_width_in_texels, 1);
data.text_coord_buffer.add_text_coord(tex_offset_u + star_width_in_texels, 0);
pos = p_source.geocentric_coords
u = normalized(cross_product(pos, up))
v = cross_product(u, pos)
s = p_source.size * size_factor
su.assign(s*u.x, s*u.y, s*u.z)
sv.assign(s*v.x, s*v.y, s*v.z)
bottom_left_pos.assign(pos.x - su.x - sv.x, pos.y - su.y - sv.y, pos.z - su.z - sv.z)
top_left_pos.assign(pos.x - su.x + sv.x, pos.y - su.y + sv.y, pos.z - su.z + sv.z)
bottom_right_pos.assign(pos.x + su.x - sv.x, pos.y + su.y - sv.y, pos.z + su.z - sv.z)
top_right_pos.assign(pos.x + su.x + sv.x, pos.y + su.y + sv.y, pos.z + su.z + sv.z)
# Add the vertices
data.vertex_buffer.add_point(bottom_left_pos)
data.color_buffer.add_color(color)
data.vertex_buffer.add_point(top_left_pos)
data.color_buffer.add_color(color)
data.vertex_buffer.add_point(bottom_right_pos)
data.color_buffer.add_color(color)
data.vertex_buffer.add_point(top_right_pos)
data.color_buffer.add_color(color)
data.sources = None
def update_objects(self, lines, update_type):
# We only care about updates to positions, ignore any other updates.
if not (self.update_type.Reset in update_type) and \
not (self.update_type.UpdatePositions in update_type):
return
num_line_segments = 0;
for l_source in lines:
num_line_segments += len(l_source.gc_vertices) - 1
# To render everything in one call, we render everything as a line list
# rather than a series of line strips.
num_vertices = 4 * num_line_segments
num_indices = 6 * num_line_segments
vb = self.vertex_buffer
vb.reset(4 * num_line_segments)
cb = self.color_buffer
cb.reset(4 * num_line_segments)
tb = self.text_coord_buffer
tb.reset(num_vertices)
ib = self.index_buffer
ib.reset(num_indices)
# See comment in PointObjectManager for justification of this calculation.
fovy_in_radians = 60 * math.pi / 180.0
size_factor = math.tan(fovy_in_radians * 0.5) / 480.0
bool_opaque = True
vertex_index = 0
for l_source in lines:
coords_list = l_source.gc_vertices
if len(coords_list) < 2:
continue
# If the color isn't fully opaque, set opaque to false.
color = l_source.color
bool_opaque &= int(color & 0xff000000) == 0xff000000
# Add the vertices.
for i in range(0, len(coords_list) - 1):
p1 = coords_list[i]
p2 = coords_list[i+1]
u = difference(p2, p1)
# The normal to the quad should face the origin at its midpoint.
avg = sum_vectors(p1, p2)
avg.scale(0.5)
# I'm assum_vectorsing that the points will already be on a unit sphere. If this is not the case,
# then we should normalize it here.
v = normalized(cross_product(u, avg))
v.scale(size_factor * l_source.line_width)
# Add the vertices
# Lower left corner
vb.add_point(difference(p1, v))
cb.add_color(color)
tb.add_text_coord(0, 1)
# Upper left corner
vb.add_point(sum_vectors(p1, v))
cb.add_color(color)
tb.add_text_coord(0, 0)
# Lower left corner
vb.add_point(difference(p2, v))
cb.add_color(color)
tb.add_text_coord(1, 1)
# Upper left corner
vb.add_point(sum_vectors(p2, v))
cb.add_color(color)
tb.add_text_coord(1, 0)
# Add the indices
bottom_left = vertex_index
top_left = vertex_index + 1
bottom_right = vertex_index +2
top_right = vertex_index + 3
vertex_index += 4
# First triangle
ib.add_index(bottom_left)
ib.add_index(top_left)
ib.add_index(bottom_right)
# Second triangle
ib.add_index(bottom_right)
ib.add_index(top_left)
ib.add_index(top_right)
self.opaque = bool_opaque
