def draw_axis(self, axis, label):
if self.minimum_covering_sphere is None:
self.update_minimum_covering_sphere()
s = self.minimum_covering_sphere
scale = max(max(s.box_max()), abs(min(s.box_min())))
gltbx.fonts.ucs_bitmap_8x13.setup_call_lists()
gl.glDisable(gl.GL_LIGHTING)
if self.settings.black_background:
gl.glColor3f(1.0, 1.0, 1.0)
else:
gl.glColor3f(0.0, 0.0, 0.0)
gl.glLineWidth(1.0)
gl.glBegin(gl.GL_LINES)
gl.glVertex3f(0.0, 0.0, 0.0)
gl.glVertex3f(axis[0] * scale, axis[1] * scale, axis[2] * scale)
gl.glEnd()
gl.glRasterPos3f(0.5 + axis[0] * scale, 0.2 + axis[1] * scale,
0.2 + axis[2] * scale)
gltbx.fonts.ucs_bitmap_8x13.render_string(label)
gl.glEnable(gl.GL_LINE_STIPPLE)
gl.glLineStipple(4, 0xAAAA)
gl.glBegin(gl.GL_LINES)
gl.glVertex3f(0.0, 0.0, 0.0)
gl.glVertex3f(-axis[0] * scale, -axis[1] * scale, -axis[2] * scale)
gl.glEnd()
gl.glDisable(gl.GL_LINE_STIPPLE)
def set_lights(self):
if self.flag_use_lights:
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glLoadIdentity()
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glLightfv(gl.GL_LIGHT0, gl.GL_POSITION, self.light0_position)
gl.glPopMatrix()
def enable(self, flag=True):
from gltbx import gl
if self.has_rescale_normal:
mode = self.GL_RESCALE_NORMAL
else:
assert self.fallback_to_normalize,\
"Rescale normals only available from OpenGL 1.2 onward"
mode = gl.GL_NORMALIZE
if flag:
gl.glEnable(mode)
else:
gl.glDisable(mode)
def enable(self, flag=True):
from gltbx import gl
if self.has_rescale_normal:
mode = self.GL_RESCALE_NORMAL
else:
assert self.fallback_to_normalize,\
"Rescale normals only available from OpenGL 1.2 onward"
mode = gl.GL_NORMALIZE
if flag:
gl.glEnable(mode)
else:
gl.glDisable(mode)
def setup_fog(self):
if self.flag_show_fog:
near, far = self.get_clipping_distances()
fog_start = near + self.fog_scale_factor * (far - near)
fog_end = max(fog_start + 5, far)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glEnable(gl.GL_FOG)
gl.glFogi(gl.GL_FOG_MODE, gl.GL_LINEAR)
gl.glFogf(gl.GL_FOG_START, fog_start)
gl.glFogf(gl.GL_FOG_END, fog_end)
b = self.background_rgb
gl.glFogfv(gl.GL_FOG_COLOR, [b[0], b[1], b[2], 1.0])
else:
gl.glDisable(gl.GL_FOG)
def draw_cell(self, axes, color):
astar, bstar, cstar = axes[0], axes[1], axes[2]
gltbx.fonts.ucs_bitmap_8x13.setup_call_lists()
gl.glDisable(gl.GL_LIGHTING)
gl.glColor3f(*color)
gl.glLineWidth(2.0)
gl.glBegin(gl.GL_LINES)
gl.glVertex3f(0.0, 0.0, 0.0)
gl.glVertex3f(*astar.elems)
gl.glVertex3f(0.0, 0.0, 0.0)
gl.glVertex3f(*bstar.elems)
gl.glVertex3f(0.0, 0.0, 0.0)
gl.glVertex3f(*cstar.elems)
gl.glEnd()
gl.glRasterPos3f(*(1.01 * astar).elems)
gltbx.fonts.ucs_bitmap_8x13.render_string("a*")
gl.glRasterPos3f(*(1.01 * bstar).elems)
gltbx.fonts.ucs_bitmap_8x13.render_string("b*")
gl.glRasterPos3f(*(1.01 * cstar).elems)
gltbx.fonts.ucs_bitmap_8x13.render_string("c*")
gl.glEnable(gl.GL_LINE_STIPPLE)
gl.glLineStipple(4, 0xAAAA)
farpoint = astar + bstar + cstar
# a* face
gl.glBegin(gl.GL_LINE_LOOP)
gl.glVertex3f(*farpoint.elems)
gl.glVertex3f(*(farpoint - bstar).elems)
gl.glVertex3f(*(farpoint - bstar - cstar).elems)
gl.glVertex3f(*(farpoint - cstar).elems)
gl.glEnd()
# b* face
gl.glBegin(gl.GL_LINE_LOOP)
gl.glVertex3f(*farpoint.elems)
gl.glVertex3f(*(farpoint - astar).elems)
gl.glVertex3f(*(farpoint - astar - cstar).elems)
gl.glVertex3f(*(farpoint - cstar).elems)
gl.glEnd()
# c* face
gl.glBegin(gl.GL_LINE_LOOP)
gl.glVertex3f(*farpoint.elems)
gl.glVertex3f(*(farpoint - bstar).elems)
gl.glVertex3f(*(farpoint - bstar - astar).elems)
gl.glVertex3f(*(farpoint - astar).elems)
gl.glEnd()
gl.glDisable(gl.GL_LINE_STIPPLE)
def draw_spheres(self, solid=False):
gl.glMatrixMode(gl.GL_MODELVIEW)
gray = 0.3
gl.glColor3f(gray, gray, gray)
if solid:
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glLightfv(gl.GL_LIGHT0, gl.GL_AMBIENT, [1, 1, 1, 1])
gl.glLightfv(gl.GL_LIGHT0, gl.GL_POSITION, [0, 0, 1, 0])
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glMaterialfv(gl.GL_FRONT, gl.GL_DIFFUSE, [1, 1, 1, 0.5])
sphere = gltbx.util.SolidSphere
grid = 50
else:
sphere = gltbx.util.WireSphere
grid = 20
for i, (x, r) in enumerate(self.spheres):
gl.glPushMatrix()
gl.glTranslated(*(x))
sphere(radius=r, slices=grid, stacks=grid)
gl.glPopMatrix()
if solid:
gl.glDisable(gl.GL_LIGHTING)
gl.glDisable(gl.GL_LIGHT0)
gl.glDisable(gl.GL_BLEND)
def setup_lighting(self):
if self.flag_use_lights:
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glEnable(gl.GL_BLEND)
# gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ZERO)
gl.glLightModeli(gl.GL_LIGHT_MODEL_TWO_SIDE, gl.GL_TRUE)
gl.glLightfv(gl.GL_LIGHT0, gl.GL_AMBIENT, [0.0, 0.0, 0.0, 1.0])
gl.glLightfv(gl.GL_LIGHT0, gl.GL_DIFFUSE, [1, 1, 1, 1])
gl.glLightfv(gl.GL_LIGHT0, gl.GL_SPECULAR, [0.5, 0.5, 0.5, 1.0])
