def _draw(self):
p = self.parameters
side = p.side
height = side * numpy.sqrt(3) / 2.
center = VisionEgg._get_center(p.position, p.anchor, (side, height))
position = numpy.array(center)
hh = height / 2
ll = position - (hh, hh)
lr = position - (-hh, hh)
u = position + (0., hh)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
gl.glColor(p.color)
gl.glBegin(gl.GL_TRIANGLES)
self._draw_vertices(ll, lr, u)
gl.glEnd()
gl.glColor(p.color_edge)
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glLineWidth(p.width)
gl.glBegin(gl.GL_LINE_STRIP)
self._draw_vertices(ll, lr, u, ll)
gl.glEnd()
gl.glDisable(gl.GL_LINE_SMOOTH)
def draw_dots(xs,ys,zs):
"""Python method for drawing dots. May be replaced by a faster C version."""
if not (len(xs) == len(ys) == len(zs)):
raise ValueError("All input arguments must be same length")
gl.glBegin(gl.GL_POINTS)
for i in xrange(len(xs)):
gl.glVertex3f(xs[i],ys[i],zs[i])
gl.glEnd()
def _draw(self):
p = self.parameters
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
gl.glColor(p.color)
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glLineWidth(p.width)
gl.glBegin(gl.GL_LINES)
gl.glVertex(p.position)
gl.glVertex(p.end)
gl.glEnd()
gl.glDisable(gl.GL_LINE_SMOOTH)
def draw(self):
p = self.parameters
if p.on:
self._gl_color(*self._color)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if p.blending_enabled:
gl.glEnable(gl.GL_BLEND)
else:
gl.glDisable(gl.GL_BLEND)
gl.glLineWidth(self._line_width)
gl.glBegin(gl.GL_LINE_LOOP)
for vertex in self._vertices:
gl.glVertex(*vertex)
gl.glEnd()
def draw(self):
p = self.parameters # shorthand
width = self.size[0]
height = self.size[1]
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glPushMatrix()
gl.glLoadIdentity()
gl.glOrtho(-width, width, -height, height, -200, 200)
gl.glScalef(2, -2, 2)
gl.glMatrixMode(gl.GL_MODELVIEW)
if len(p.color)==3:
gl.glColor3f(*p.color)
elif len(p.color)==4:
gl.glColor4f(*p.color)
# this is necessary for the antialiasing
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
gl.glLineWidth(p.line_width)
# draw the polygon
gl.glBegin(gl.GL_POLYGON)
for point in p.points:
gl.glVertex3f(point[0], point[1], 0.0)
gl.glVertex3f(p.points[0][0], p.points[0][1], 0.0)
gl.glEnd() # GL_LINE_STRIP
gl.glDisable(gl.GL_LINE_SMOOTH)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.on:
if len(p.color) == 3:
gl.glColor3f(*p.color)
elif len(p.color) == 4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if p.blending_enabled:
gl.glEnable(gl.GL_BLEND)
else:
gl.glDisable(gl.GL_BLEND)
gl.glBegin(gl.GL_QUADS)
gl.glVertex(*p.vertex1)
gl.glVertex(*p.vertex2)
gl.glVertex(*p.vertex3)
gl.glVertex(*p.vertex4)
gl.glEnd() # GL_QUADS
def draw(self):
p = self.parameters # shorthand
if p.on:
if len(p.color)==3:
gl.glColor3f(*p.color)
elif len(p.color)==4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if p.blending_enabled:
gl.glEnable(gl.GL_BLEND)
else:
gl.glDisable(gl.GL_BLEND)
gl.glBegin(gl.GL_QUADS)
gl.glVertex(*p.vertex1)
gl.glVertex(*p.vertex2)
gl.glVertex(*p.vertex3)
gl.glVertex(*p.vertex4)
gl.glEnd() # GL_QUADS
def _draw(self):
p = self.parameters
center = VisionEgg._get_center(p.position, p.anchor,
(p.radius, p.radius))
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
gl.glColor(p.color)
start, end = p.start, p.end
if end < start:
start -= 360.
start, end = map(numpy.deg2rad, (start, end))
frac = (end - start) / (2 * numpy.pi)
num_triangles = float(p.num_triangles) * frac
angles = numpy.linspace(start, end, num_triangles)
verts = numpy.zeros((num_triangles, 2))
verts[:, 0] = center[0] + p.radius * numpy.cos(angles)
verts[:, 1] = center[1] + p.radius * numpy.sin(angles)
if p.disk:
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex(center)
self._draw_vertices(*verts)
gl.glEnd()
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex(center)
self._draw_vertices(*verts)
gl.glEnd()
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
if p.circle:
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glColor(p.color_edge)
gl.glLineWidth(p.circle_width)
gl.glBegin(gl.GL_LINES)
for i in range(verts.shape[0] - 1):
self._draw_vertices(verts[i], verts[i + 1])
gl.glEnd()
gl.glDisable(gl.GL_LINE_SMOOTH)
def _draw(self):
p = self.parameters
center = VisionEgg._get_center(p.position, p.anchor, (p.radius, p.radius))
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
gl.glColor(p.color)
start, end = p.start, p.end
if end < start:
start -= 360.
start, end = map(numpy.deg2rad, (start, end))
frac = (end - start) / (2 * numpy.pi)
num_triangles = float(p.num_triangles) * frac
angles = numpy.linspace(start, end, num_triangles)
verts = numpy.zeros((num_triangles, 2))
verts[:,0] = center[0] + p.radius * numpy.cos(angles)
verts[:,1] = center[1] + p.radius * numpy.sin(angles)
if p.disk:
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex(center)
self._draw_vertices(*verts)
gl.glEnd()
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex(center)
self._draw_vertices(*verts)
gl.glEnd()
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
if p.circle:
if p.anti_aliasing:
gl.glEnable(gl.GL_LINE_SMOOTH)
gl.glColor(p.color_edge)
gl.glLineWidth(p.circle_width)
gl.glBegin(gl.GL_LINES)
for i in range(verts.shape[0]-1):
self._draw_vertices(verts[i], verts[i+1])
gl.glEnd()
gl.glDisable(gl.GL_LINE_SMOOTH)
def draw(self):
p = self.parameters # shorthand
if p.center is not None:
if not hasattr(VisionEgg.config,"_GAVE_CENTER_DEPRECATION"):
logger = logging.getLogger('VisionEgg.MoreStimuli')
logger.warning("Specifying Target2D by deprecated "
"'center' parameter deprecated. Use "
"'position' parameter instead. (Allows "
"use of 'anchor' parameter to set to "
"other values.)")
VisionEgg.config._GAVE_CENTER_DEPRECATION = 1
p.anchor = 'center'
p.position = p.center[0], p.center[1] # copy values (don't copy ref to tuple)
if p.on:
# calculate center
center = VisionEgg._get_center(p.position,p.anchor,p.size)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glTranslate(center[0],center[1],0.0)
gl.glRotate(p.orientation,0.0,0.0,1.0)
if len(p.color)==3:
gl.glColor3f(*p.color)
elif len(p.color)==4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
w = p.size[0]/2.0
h = p.size[1]/2.0
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f(-w,-h, 0.0)
gl.glVertex3f( w,-h, 0.0)
gl.glVertex3f( w, h, 0.0)
gl.glVertex3f(-w, h, 0.0)
gl.glEnd() # GL_QUADS
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.MoreStimuli')
logger.warning("The parameter anti_aliasing is "
"set to true in the Target2D "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now
# redraw the outline of the polygon (with
# anti-aliasing). (Using GL_POLYGON_SMOOTH results in
# artifactual lines where triangles were joined to
# create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_LINE)
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f(-w,-h, 0.0);
gl.glVertex3f( w,-h, 0.0);
gl.glVertex3f( w, h, 0.0);
gl.glVertex3f(-w, h, 0.0);
gl.glEnd() # GL_QUADS
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.center is not None:
if not hasattr(VisionEgg.config, "_GAVE_CENTER_DEPRECATION"):
logger = logging.getLogger('VisionEgg.MoreStimuli')
logger.warning("Specifying Target2D by deprecated "
"'center' parameter deprecated. Use "
"'position' parameter instead. (Allows "
"use of 'anchor' parameter to set to "
"other values.)")
VisionEgg.config._GAVE_CENTER_DEPRECATION = 1
p.anchor = 'center'
p.position = p.center[0], p.center[
1] # copy values (don't copy ref to tuple)
if p.on:
# calculate center
center = VisionEgg._get_center(p.position, p.anchor, p.size)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glTranslate(center[0], center[1], 0.0)
gl.glRotate(p.orientation, 0.0, 0.0, 1.0)
if len(p.color) == 3:
gl.glColor3f(*p.color)
elif len(p.color) == 4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
w = p.size[0] / 2.0
h = p.size[1] / 2.0
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f(-w, -h, 0.0)
gl.glVertex3f(w, -h, 0.0)
gl.glVertex3f(w, h, 0.0)
gl.glVertex3f(-w, h, 0.0)
gl.glEnd() # GL_QUADS
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.MoreStimuli')
logger.warning("The parameter anti_aliasing is "
"set to true in the Target2D "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now
# redraw the outline of the polygon (with
# anti-aliasing). (Using GL_POLYGON_SMOOTH results in
# artifactual lines where triangles were joined to
# create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f(-w, -h, 0.0)
gl.glVertex3f(w, -h, 0.0)
gl.glVertex3f(w, h, 0.0)
gl.glVertex3f(-w, h, 0.0)
gl.glEnd() # GL_QUADS
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
gl.glPopMatrix()
def draw(self):
p = self.parameters # Shorthand
if p.on:
# Calculate center
center = VisionEgg._get_center(p.position,p.anchor,p.size)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glTranslate(center[0],center[1],0.0)
gl.glRotate(-p.orientation,0.0,0.0,1.0)
if len(p.color)==3:
gl.glColor3f(*p.color)
elif len(p.color)==4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
w = p.size[0]/2.0
h = p.size[1]/2.0
gl.glBegin(gl.GL_QUADS) # Draw Rectangle
gl.glVertex3f( 0.25*w, h, 0.0)
gl.glVertex3f(-w, h, 0.0)
gl.glVertex3f(-w,-h, 0.0)
gl.glVertex3f( 0.25*w, -h, 0.0)
gl.glEnd() # GL_QUADS
gl.glBegin(gl.GL_TRIANGLES) # Draw Triangle
gl.glVertex3f( 1.00*w, 0.0*h, 0.0) # Top
gl.glVertex3f( 0.25*w,-3.0*h, 0.0)
gl.glVertex3f( 0.25*w, 3.0*h, 0.0)
gl.glEnd() # GL_QUADS
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.Arrow')
logger.warning("The parameter anti_aliasing is "
"set to true in the Arrow "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now redraw
# the outline of the polygon (with anti-aliasing). (Using
# GL_POLYGON_SMOOTH results in artifactual lines where
# triangles were joined to create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_LINE)
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f( 0.25*w, h, 0.0) # Draw Rectangle
gl.glVertex3f(-w, h, 0.0)
gl.glVertex3f(-w,-h, 0.0)
gl.glVertex3f( 0.25*w, -h, 0.0)
gl.glVertex3f( 1.00*w, 0.0*h, 0.0) # Draw Triangle
gl.glVertex3f( 0.25*w,-3.0*h, 0.0)
gl.glVertex3f( 0.25*w, 3.0*h, 0.0)
gl.glEnd() # GL_QUADS
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.on:
# calculate center
center = VisionEgg._get_center(p.position,p.anchor,(p.radius, p.radius))
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
if len(p.color)==3:
gl.glColor3f(*p.color)
elif len(p.color)==4:
gl.glColor4f(*p.color)
# Build filled circle from points
# gl.glBegin(gl.GL_POINTS)
# radius = int(math.ceil(p.radius))
# for i in range(-radius, radius):
# for j in range(-radius, radius):
# if(i * i + j * j < radius * radius):
# gl.glVertex3f(p.position[0] + i, p.position[1] + j, 0.0)
# gl.glEnd() # GL_POINTS
# Build filled circle from triangles (this is typically faster
# then the commented code above with the points)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex3f(p.position[0], p.position[1], 0.0)
angles = Numeric.arange(p.num_triangles)/float(p.num_triangles)*2.0*math.pi
verts = Numeric.zeros( (p.num_triangles,2), Numeric.Float )
verts[:,0] = p.position[0] + p.radius * Numeric.cos(angles)
verts[:,1] = p.position[1] + p.radius * Numeric.sin(angles)
for i in range(verts.shape[0]):
gl.glVertex2fv(verts[i])
gl.glVertex2fv(verts[0])
gl.glEnd() # GL_TRIANGLE_FAN
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.Arrow')
logger.warning("The parameter anti_aliasing is "
"set to true in the Arrow "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now redraw
# the outline of the polygon (with anti-aliasing). (Using
# GL_POLYGON_SMOOTH results in artifactual lines where
# triangles were joined to create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA,gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_LINE)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex3f(p.position[0], p.position[1], 0.0)
angles = Numeric.arange(p.num_triangles)/float(p.num_triangles)*2.0*math.pi
verts = Numeric.zeros( (p.num_triangles,2), Numeric.Float )
verts[:,0] = p.position[0] + p.radius * Numeric.cos(angles)
verts[:,1] = p.position[1] + p.radius * Numeric.sin(angles)
for i in range(verts.shape[0]):
gl.glVertex2fv(verts[i])
gl.glVertex2fv(verts[0])
gl.glEnd() # GL_TRIANGLE_FAN
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
def draw(self):
p = self.parameters # shorthand
if p.on:
# calculate center
center = VisionEgg._get_center(p.position, p.anchor, p.size)
if p.mask:
gl.glActiveTextureARB(gl.GL_TEXTURE0_ARB)
gl.glBindTexture(gl.GL_TEXTURE_1D, self._texture_object_id)
gl.glEnable(gl.GL_TEXTURE_1D)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.bit_depth != self.cached_bit_depth:
self.calculate_bit_depth_dependencies()
# Clear the modeview matrix
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
# Rotate about the center of the texture
gl.glTranslate(center[0], center[1], 0)
gl.glRotate(p.orientation, 0, 0, 1)
if p.depth is None:
gl.glDisable(gl.GL_DEPTH_TEST)
depth = 0.0
else:
gl.glEnable(gl.GL_DEPTH_TEST)
depth = p.depth
# allow max_alpha value to control blending
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
if p.color2:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_BLEND)
gl.glTexEnvfv(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_COLOR, p.color2)
## alpha is ignored because the texture base internal format is luminance
else:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_MODULATE)
if p.t0_time_sec_absolute is None and not p.ignore_time:
p.t0_time_sec_absolute = VisionEgg.time_func()
w = p.size[0]
inc = w / float(p.num_samples)
if p.ignore_time:
phase = p.phase_at_t0
else:
t_var = VisionEgg.time_func() - p.t0_time_sec_absolute
phase = t_var * p.temporal_freq_hz * -360.0 + p.phase_at_t0
if p.recalculate_phase_tolerance is None or abs(self._last_phase - phase) > p.recalculate_phase_tolerance:
self._last_phase = phase # we're re-drawing the phase at this angle
floating_point_sin = (
numpy.sin(
2.0 * math.pi * p.spatial_freq * numpy.arange(0.0, w, inc, dtype=numpy.float)
+ (phase / 180.0 * math.pi)
)
* 0.5
* p.contrast
+ p.pedestal
)
floating_point_sin = numpy.clip(
floating_point_sin, 0.0, 1.0
) # allow square wave generation if contrast > 1
texel_data = (floating_point_sin * self.max_int_val).astype(self.numpy_dtype)
# PyOpenGL 2.0.1.09 has a bug, so use our own wrapper
_vegl.veglTexSubImage1D(
gl.GL_TEXTURE_1D, # target
0, # level
0, # x offset
p.num_samples, # width
self.format, # format of new texel data
self.gl_type, # type of new texel data
texel_data,
) # new texel data
if 0:
compare_array = numpy.empty(texel_data.shape, dtype=texel_data.dtype)
pixels = _vegl.veglGetTexImage(
gl.GL_TEXTURE_1D, # target
0, # level
self.format, # format
self.gl_type, # type
compare_array,
)
assert numpy.allclose(compare_array, texel_data)
h_w = p.size[0] / 2.0
h_h = p.size[1] / 2.0
l = -h_w
r = h_w
b = -h_h
t = h_h
# in the case of only color1,
# the texel data multiplies color1 to produce a color
# with color2,
# the texel data linearly interpolates between color1 and color2
gl.glColor4f(p.color1[0], p.color1[1], p.color1[2], p.max_alpha)
if p.mask:
p.mask.draw_masked_quad(
0.0,
1.0,
0.0,
1.0, # l,r,b,t for texture coordinates
l,
r,
b,
t, # l,r,b,t in eye coordinates
depth,
) # also in eye coordinates
else:
# draw unmasked quad
gl.glBegin(gl.GL_QUADS)
gl.glTexCoord2f(0.0, 0.0)
gl.glVertex3f(l, b, depth)
gl.glTexCoord2f(1.0, 0.0)
gl.glVertex3f(r, b, depth)
gl.glTexCoord2f(1.0, 1.0)
gl.glVertex3f(r, t, depth)
gl.glTexCoord2f(0.0, 1.0)
gl.glVertex3f(l, t, depth)
gl.glEnd() # GL_QUADS
gl.glDisable(gl.GL_TEXTURE_1D)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.on:
if p.mask:
gl.glActiveTextureARB(gl.GL_TEXTURE0_ARB)
if p.depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if p.polygon_offset_enabled:
gl.glEnable(gl.GL_POLYGON_OFFSET_EXT)
gl.glPolygonOffset(p.polygon_offset_factor, p.polygon_offset_units)
gl.glBindTexture(gl.GL_TEXTURE_1D, self._texture_object_id)
gl.glEnable(gl.GL_TEXTURE_1D)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.bit_depth != self.cached_bit_depth:
self.calculate_bit_depth_dependencies()
# allow max_alpha value to control blending
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
if p.color2:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_BLEND)
gl.glTexEnvfv(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_COLOR, p.color2)
## alpha is ignored because the texture base internal format is luminance
else:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_MODULATE)
if p.t0_time_sec_absolute is None and not p.ignore_time:
p.t0_time_sec_absolute = VisionEgg.time_func()
w = p.size[0]
inc = w / float(p.num_samples)
if p.ignore_time:
phase = p.phase_at_t0
else:
t_var = VisionEgg.time_func() - p.t0_time_sec_absolute
phase = t_var * p.temporal_freq_hz * -360.0 + p.phase_at_t0
if p.recalculate_phase_tolerance is None or abs(self._last_phase - phase) > p.recalculate_phase_tolerance:
self._last_phase = phase # we're re-drawing the phase at this angle
floating_point_sin = (
numpy.sin(
2.0 * math.pi * p.spatial_freq * numpy.arange(0.0, w, inc, dtype=numpy.float)
+ (phase / 180.0 * math.pi)
)
* 0.5
* p.contrast
+ p.pedestal
)
floating_point_sin = numpy.clip(
floating_point_sin, 0.0, 1.0
) # allow square wave generation if contrast > 1
texel_data = (floating_point_sin * self.max_int_val).astype(self.numpy_dtype).tostring()
gl.glTexSubImage1D(
gl.GL_TEXTURE_1D, # target
0, # level
0, # x offset
p.num_samples, # width
self.format, # format of new texel data
self.gl_type, # type of new texel data
texel_data,
) # new texel data
# in the case of only color1,
# the texel data multiplies color1 to produce a color
# with color2,
# the texel data linearly interpolates between color1 and color2
gl.glColor4f(p.color1[0], p.color1[1], p.color1[2], p.max_alpha)
if p.mask:
p.mask.draw_masked_quad_3d(
0.0, 1.0, 0.0, 1.0, p.lowerleft, p.lowerright, p.upperright, p.upperleft # for texture coordinates
)
else:
# draw unmasked quad
gl.glBegin(gl.GL_QUADS)
gl.glTexCoord2f(0.0, 0.0)
gl.glVertex(*p.lowerleft)
gl.glTexCoord2f(1.0, 0.0)
gl.glVertex(*p.lowerright)
gl.glTexCoord2f(1.0, 1.0)
gl.glVertex(*p.upperright)
gl.glTexCoord2f(0.0, 1.0)
gl.glVertex(*p.upperleft)
gl.glEnd() # GL_QUADS
gl.glDisable(gl.GL_TEXTURE_1D)
if p.polygon_offset_enabled:
gl.glDisable(gl.GL_POLYGON_OFFSET_EXT)
def draw(self):
p = self.parameters # Shorthand
if p.on:
# Calculate center
center = VisionEgg._get_center(p.position, p.anchor, p.size)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glTranslate(center[0], center[1], 0.0)
gl.glRotate(-p.orientation, 0.0, 0.0, 1.0)
if len(p.color) == 3:
gl.glColor3f(*p.color)
elif len(p.color) == 4:
gl.glColor4f(*p.color)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
w = p.size[0] / 2.0
h = p.size[1] / 2.0
gl.glBegin(gl.GL_QUADS) # Draw Rectangle
gl.glVertex3f(0.25 * w, h, 0.0)
gl.glVertex3f(-w, h, 0.0)
gl.glVertex3f(-w, -h, 0.0)
gl.glVertex3f(0.25 * w, -h, 0.0)
gl.glEnd() # GL_QUADS
gl.glBegin(gl.GL_TRIANGLES) # Draw Triangle
gl.glVertex3f(1.00 * w, 0.0 * h, 0.0) # Top
gl.glVertex3f(0.25 * w, -3.0 * h, 0.0)
gl.glVertex3f(0.25 * w, 3.0 * h, 0.0)
gl.glEnd() # GL_QUADS
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.Arrow')
logger.warning("The parameter anti_aliasing is "
"set to true in the Arrow "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now redraw
# the outline of the polygon (with anti-aliasing). (Using
# GL_POLYGON_SMOOTH results in artifactual lines where
# triangles were joined to create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
gl.glBegin(gl.GL_QUADS)
gl.glVertex3f(0.25 * w, h, 0.0) # Draw Rectangle
gl.glVertex3f(-w, h, 0.0)
gl.glVertex3f(-w, -h, 0.0)
gl.glVertex3f(0.25 * w, -h, 0.0)
gl.glVertex3f(1.00 * w, 0.0 * h, 0.0) # Draw Triangle
gl.glVertex3f(0.25 * w, -3.0 * h, 0.0)
gl.glVertex3f(0.25 * w, 3.0 * h, 0.0)
gl.glEnd() # GL_QUADS
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.on:
# calculate center
center = VisionEgg._get_center(p.position, p.anchor,
(p.radius, p.radius))
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glDisable(gl.GL_BLEND)
if len(p.color) == 3:
gl.glColor3f(*p.color)
elif len(p.color) == 4:
gl.glColor4f(*p.color)
# Build filled circle from points
# gl.glBegin(gl.GL_POINTS)
# radius = int(math.ceil(p.radius))
# for i in range(-radius, radius):
# for j in range(-radius, radius):
# if(i * i + j * j < radius * radius):
# gl.glVertex3f(p.position[0] + i, p.position[1] + j, 0.0)
# gl.glEnd() # GL_POINTS
# Build filled circle from triangles (this is typically faster
# then the commented code above with the points)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex3f(p.position[0], p.position[1], 0.0)
angles = Numeric.arange(p.num_triangles) / float(
p.num_triangles) * 2.0 * math.pi
verts = Numeric.zeros((p.num_triangles, 2), Numeric.Float)
verts[:, 0] = p.position[0] + p.radius * Numeric.cos(angles)
verts[:, 1] = p.position[1] + p.radius * Numeric.sin(angles)
for i in range(verts.shape[0]):
gl.glVertex2fv(verts[i])
gl.glVertex2fv(verts[0])
gl.glEnd() # GL_TRIANGLE_FAN
if p.anti_aliasing:
if not self._gave_alpha_warning:
if len(p.color) > 3 and p.color[3] != 1.0:
logger = logging.getLogger('VisionEgg.Arrow')
logger.warning("The parameter anti_aliasing is "
"set to true in the Arrow "
"stimulus class, but the color "
"parameter specifies an alpha "
"value other than 1.0. To "
"acheive anti-aliasing, ensure "
"that the alpha value for the "
"color parameter is 1.0.")
self._gave_alpha_warning = 1
# We've already drawn a filled polygon (aliased), now redraw
# the outline of the polygon (with anti-aliasing). (Using
# GL_POLYGON_SMOOTH results in artifactual lines where
# triangles were joined to create quad, at least on some OpenGL
# implementations.)
# Calculate coverage value for each pixel of outline
# and store as alpha
gl.glEnable(gl.GL_LINE_SMOOTH)
# Now specify how to use the alpha value
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
# Draw a second polygon in line mode, so the edges are anti-aliased
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
gl.glBegin(gl.GL_TRIANGLE_FAN)
gl.glVertex3f(p.position[0], p.position[1], 0.0)
angles = Numeric.arange(p.num_triangles) / float(
p.num_triangles) * 2.0 * math.pi
verts = Numeric.zeros((p.num_triangles, 2), Numeric.Float)
verts[:, 0] = p.position[0] + p.radius * Numeric.cos(angles)
verts[:, 1] = p.position[1] + p.radius * Numeric.sin(angles)
for i in range(verts.shape[0]):
gl.glVertex2fv(verts[i])
gl.glVertex2fv(verts[0])
gl.glEnd() # GL_TRIANGLE_FAN
# Set the polygon mode back to fill mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glDisable(gl.GL_LINE_SMOOTH)
def draw(self):
p = self.parameters # shorthand
if p.on:
# calculate center
center = VisionEgg._get_center(p.position,p.anchor,p.size)
if p.mask:
gl.glActiveTextureARB(gl.GL_TEXTURE0_ARB)
gl.glBindTexture(gl.GL_TEXTURE_1D,self._texture_object_id)
gl.glEnable(gl.GL_TEXTURE_1D)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.bit_depth != self.cached_bit_depth:
self.calculate_bit_depth_dependencies()
# Clear the modeview matrix
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
# Rotate about the center of the texture
gl.glTranslate(center[0],
center[1],
0)
gl.glRotate(p.orientation,0,0,1)
if p.depth is None:
gl.glDisable(gl.GL_DEPTH_TEST)
depth = 0.0
else:
gl.glEnable(gl.GL_DEPTH_TEST)
depth = p.depth
# allow max_alpha value to control blending
gl.glEnable( gl.GL_BLEND )
gl.glBlendFunc( gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA )
if p.color2:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_BLEND)
gl.glTexEnvfv(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_COLOR, p.color2)
## alpha is ignored because the texture base internal format is luminance
else:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_MODULATE)
if p.t0_time_sec_absolute is None and not p.ignore_time:
p.t0_time_sec_absolute = VisionEgg.time_func()
w = p.size[0]
inc = w/float(p.num_samples)
if p.ignore_time:
phase = p.phase_at_t0
else:
t_var = VisionEgg.time_func() - p.t0_time_sec_absolute
phase = t_var*p.temporal_freq_hz*-360.0 + p.phase_at_t0
if p.recalculate_phase_tolerance is None or abs(self._last_phase - phase) > p.recalculate_phase_tolerance:
self._last_phase = phase # we're re-drawing the phase at this angle
floating_point_sin = numpy.sin(2.0*math.pi*p.spatial_freq*numpy.arange(0.0,w,inc,dtype=numpy.float)+(phase/180.0*math.pi))*0.5*p.contrast+p.pedestal
floating_point_sin = numpy.clip(floating_point_sin,0.0,1.0) # allow square wave generation if contrast > 1
texel_data = (floating_point_sin*self.max_int_val).astype(self.numpy_dtype)
# PyOpenGL 2.0.1.09 has a bug, so use our own wrapper
_vegl.veglTexSubImage1D(gl.GL_TEXTURE_1D, # target
0, # level
0, # x offset
p.num_samples, # width
self.format, # format of new texel data
self.gl_type, # type of new texel data
texel_data) # new texel data
if 0:
compare_array = numpy.empty(texel_data.shape,dtype=texel_data.dtype)
pixels = _vegl.veglGetTexImage(gl.GL_TEXTURE_1D, # target
0, # level
self.format, # format
self.gl_type, # type
compare_array)
assert numpy.allclose( compare_array, texel_data )
h_w = p.size[0]/2.0
h_h = p.size[1]/2.0
l = -h_w
r = h_w
b = -h_h
t = h_h
# in the case of only color1,
# the texel data multiplies color1 to produce a color
# with color2,
# the texel data linearly interpolates between color1 and color2
gl.glColor4f(p.color1[0],p.color1[1],p.color1[2],p.max_alpha)
if p.mask:
p.mask.draw_masked_quad(0.0,1.0,0.0,1.0, # l,r,b,t for texture coordinates
l,r,b,t, # l,r,b,t in eye coordinates
depth ) # also in eye coordinates
else:
# draw unmasked quad
gl.glBegin(gl.GL_QUADS)
gl.glTexCoord2f(0.0,0.0)
gl.glVertex3f(l,b,depth)
gl.glTexCoord2f(1.0,0.0)
gl.glVertex3f(r,b,depth)
gl.glTexCoord2f(1.0,1.0)
gl.glVertex3f(r,t,depth)
gl.glTexCoord2f(0.0,1.0)
gl.glVertex3f(l,t,depth)
gl.glEnd() # GL_QUADS
gl.glDisable(gl.GL_TEXTURE_1D)
gl.glPopMatrix()
def draw(self):
p = self.parameters # shorthand
if p.on:
if p.mask:
gl.glActiveTextureARB(gl.GL_TEXTURE0_ARB)
if p.depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if p.polygon_offset_enabled:
gl.glEnable(gl.GL_POLYGON_OFFSET_EXT)
gl.glPolygonOffset(p.polygon_offset_factor, p.polygon_offset_units)
gl.glBindTexture(gl.GL_TEXTURE_1D,self._texture_object_id)
gl.glEnable(gl.GL_TEXTURE_1D)
gl.glDisable(gl.GL_TEXTURE_2D)
if p.bit_depth != self.cached_bit_depth:
self.calculate_bit_depth_dependencies()
# allow max_alpha value to control blending
gl.glEnable( gl.GL_BLEND )
gl.glBlendFunc( gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA )
if p.color2:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_BLEND)
gl.glTexEnvfv(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_COLOR, p.color2)
## alpha is ignored because the texture base internal format is luminance
else:
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_MODULATE)
if p.t0_time_sec_absolute is None and not p.ignore_time:
p.t0_time_sec_absolute = VisionEgg.time_func()
w = p.size[0]
inc = w/float(p.num_samples)
if p.ignore_time:
phase = p.phase_at_t0
else:
t_var = VisionEgg.time_func() - p.t0_time_sec_absolute
phase = t_var*p.temporal_freq_hz*-360.0 + p.phase_at_t0
if p.recalculate_phase_tolerance is None or abs(self._last_phase - phase) > p.recalculate_phase_tolerance:
self._last_phase = phase # we're re-drawing the phase at this angle
floating_point_sin = numpy.sin(2.0*math.pi*p.spatial_freq*numpy.arange(0.0,w,inc,dtype=numpy.float)+(phase/180.0*math.pi))*0.5*p.contrast+p.pedestal
floating_point_sin = numpy.clip(floating_point_sin,0.0,1.0) # allow square wave generation if contrast > 1
texel_data = (floating_point_sin*self.max_int_val).astype(self.numpy_dtype).tostring()
gl.glTexSubImage1D(gl.GL_TEXTURE_1D, # target
0, # level
0, # x offset
p.num_samples, # width
self.format, # format of new texel data
self.gl_type, # type of new texel data
texel_data) # new texel data
# in the case of only color1,
# the texel data multiplies color1 to produce a color
# with color2,
# the texel data linearly interpolates between color1 and color2
gl.glColor4f(p.color1[0],p.color1[1],p.color1[2],p.max_alpha)
if p.mask:
p.mask.draw_masked_quad_3d(0.0,1.0,0.0,1.0, # for texture coordinates
p.lowerleft,p.lowerright,p.upperright,p.upperleft)
else:
# draw unmasked quad
gl.glBegin(gl.GL_QUADS)
gl.glTexCoord2f(0.0,0.0)
gl.glVertex(*p.lowerleft)
gl.glTexCoord2f(1.0,0.0)
gl.glVertex(*p.lowerright)
gl.glTexCoord2f(1.0,1.0)
gl.glVertex(*p.upperright)
gl.glTexCoord2f(0.0,1.0)
gl.glVertex(*p.upperleft)
gl.glEnd() # GL_QUADS
gl.glDisable(gl.GL_TEXTURE_1D)
if p.polygon_offset_enabled:
gl.glDisable(gl.GL_POLYGON_OFFSET_EXT)
def draw(self):
"""Redraw the stimulus on every frame.
"""
p = self.parameters
if p.texture != self._using_texture: # self._using_texture is from TextureStimulusBaseClass
self._reload_texture()
self.rebuild_display_list()
if p.on:
# Set OpenGL state variables
if p.depth_test:
gl.glEnable( gl.GL_DEPTH_TEST )
else:
gl.glDisable( gl.GL_DEPTH_TEST )
gl.glEnable( gl.GL_TEXTURE_2D ) # Make sure textures are drawn
gl.glEnable( gl.GL_BLEND ) # Contrast control implemented through blending
# All of the contrast control stuff is somewhat arcane and
# not very clear from reading the code, so here is how it
# works in English. (Not that it makes it any more clear!)
#
# In the final "textured fragment" (before being blended
# to the framebuffer), the color values are equal to those
# of the texture (with the exception of texels around the
# edges which have their amplitudes reduced due to
# anti-aliasing and are intermediate between the color of
# the texture and mid-gray), and the alpha value is set to
# the contrast. Blending occurs, and by choosing the
# appropriate values for glBlendFunc, adds the product of
# fragment alpha (contrast) and fragment color to the
# product of one minus fragment alpha (contrast) and what
# was already in the framebuffer.
gl.glBlendFunc( gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA )
gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_DECAL)
# clear modelview matrix
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
try:
gl.glColor4f(0.5,0.5,0.5,p.contrast) # Set the polygons' fragment color (implements contrast)
if not self.constant_parameters.mipmaps_enabled:
if p.texture_min_filter in TextureStimulusBaseClass._mipmap_modes:
raise RuntimeError("Specified a mipmap mode in texture_min_filter, but mipmaps not enabled.")
self.texture_object.set_min_filter( p.texture_min_filter )
self.texture_object.set_mag_filter( p.texture_mag_filter )
self.texture_object.set_wrap_mode_s( p.texture_wrap_s )
self.texture_object.set_wrap_mode_t( p.texture_wrap_t )
if 1:
tex_phase = p.tex_phase % 1.0 # make 0 <= tex_phase < 1.0
TINY = 1.0e-10
tex = p.texture
tex.update()
if tex_phase < TINY: # it's effectively zero
gl.glBegin(gl.GL_QUADS)
gl.glTexCoord2f(tex.buf_lf,tex.buf_bf)
gl.glVertex(*p.lowerleft)
gl.glTexCoord2f(tex.buf_rf,tex.buf_bf)
gl.glVertex(*p.lowerright)
gl.glTexCoord2f(tex.buf_rf,tex.buf_tf)
gl.glVertex(*p.upperright)
gl.glTexCoord2f(tex.buf_lf,tex.buf_tf)
gl.glVertex(*p.upperleft)
gl.glEnd() # GL_QUADS
else:
# Convert tex_phase into texture buffer fraction
buf_break_f = ( (tex.buf_rf - tex.buf_lf) * (1.0-tex_phase) ) + tex.buf_lf
r = cgtypes.vec3(p.lowerright)
l = cgtypes.vec3(p.lowerleft)
quad_x_lower = (r-l)*tex_phase + l
r = cgtypes.vec3(p.upperright)
l = cgtypes.vec3(p.upperleft)
quad_x_upper = (r-l)*tex_phase + l
gl.glBegin(gl.GL_QUADS)
# First quad
gl.glTexCoord2f(buf_break_f,tex.buf_bf)
gl.glVertex(*p.lowerleft)
gl.glTexCoord2f(tex.buf_rf,tex.buf_bf)
gl.glVertex(*quad_x_lower)
gl.glTexCoord2f(tex.buf_rf,tex.buf_tf)
gl.glVertex(*quad_x_upper)
gl.glTexCoord2f(buf_break_f,tex.buf_tf)
gl.glVertex(*p.upperleft)
# Second quad
gl.glTexCoord2f(tex.buf_lf,tex.buf_bf)
gl.glVertex(*quad_x_lower)
gl.glTexCoord2f(buf_break_f,tex.buf_bf)
gl.glVertex(*p.lowerright)
gl.glTexCoord2f(buf_break_f,tex.buf_tf)
gl.glVertex(*p.upperright)
gl.glTexCoord2f(tex.buf_lf,tex.buf_tf)
gl.glVertex(*quad_x_upper)
gl.glEnd() # GL_QUADS
finally:
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPopMatrix()
