def draw(self, projection, view, width, height):
model_matrix = self._transform.matrix
# Set uniforms
self._program["u_projection"] = projection
# Note: OpenGL matrix multiplication works on column-major oriented storage (as least for pre-multiplication).
# Also glumpy.glm is using column-major assumption for its operations.
view_model_matrix = np.transpose(
np.matmul(np.transpose(view), np.transpose(model_matrix)))
self._program["u_view_model_matrix"] = view_model_matrix
# self._program["u_view"] = view
# self._program["u_model"] = self._model
view_model_normal_matrix = np.transpose(
np.linalg.inv(view_model_matrix))
self._program["u_view_model_normal_matrix"] = view_model_normal_matrix
self._program["u_color_scale"] = self._color_scale
self._program["u_normal_scale"] = self._normal_scale
self._program["u_depth_scale"] = self._depth_scale
if self._shader_type == self.PHONG:
self._program["u_light_position"] = self._light_position
self._program[
"u_light_ambient_intensity"] = 0.4 * self._light_intensity
self._program[
"u_light_diffuse_intensity"] = 0.4 * self._light_intensity
self._program[
"u_light_specular_intensity"] = 0.2 * self._light_intensity
self._program["u_material_ambient"] = self._material
self._program["u_material_diffuse"] = self._material
self._program["u_material_specular"] = self._material
self._program["u_material_shininess"] = 32
with self._program.activate():
# Bind index buffer and draw
if self.use_depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if self.use_face_culling:
gl.glFrontFace(gl.GL_CCW)
gl.glCullFace(gl.GL_BACK)
gl.glEnable(gl.GL_CULL_FACE)
else:
gl.glDisable(gl.GL_CULL_FACE)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._gl_index_buffer)
gl.glDrawElements(gl.GL_TRIANGLES, 3 * len(self._faces),
opengl_utils.get_gl_type(self._faces), None)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, 0)
def draw(self, mode=gl.GL_TRIANGLES, indices=None): #first=0, count=None):
""" Draw using the specified mode & indices.
:param gl.GLEnum mode:
One of
* GL_POINTS
* GL_LINES
* GL_LINE_STRIP
* GL_LINE_LOOP,
* GL_TRIANGLES
* GL_TRIANGLE_STRIP
* GL_TRIANGLE_FAN
:param IndexBuffer|None indices:
Vertex indices to be drawn. If none given, everything is drawn.
"""
self.activate()
attributes = self._attributes.values()
# Get buffer size first attribute
# We need more tests here
# - do we have at least 1 attribute ?
# - does all attributes report same count ?
# count = (count or attributes[0].size) - first
if isinstance(indices, IndexBuffer):
indices.activate()
gltypes = {
np.dtype(np.uint8): gl.GL_UNSIGNED_BYTE,
np.dtype(np.uint16): gl.GL_UNSIGNED_SHORT,
np.dtype(np.uint32): gl.GL_UNSIGNED_INT
}
gl.glDrawElements(mode, indices.size, gltypes[indices.dtype], None)
indices.deactivate()
else:
first = 0
# count = (self._count or attributes[0].size) - first
count = len(tuple(attributes)[0])
gl.glDrawArrays(mode, first, count)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
self.deactivate()
def draw(self, mode=gl.GL_TRIANGLES, indices=None): # first=0, count=None):
""" Draw the attribute arrays in the specified mode.
Parameters
----------
mode : GL_ENUM
GL_POINTS, GL_LINES, GL_LINE_STRIP, GL_LINE_LOOP,
GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN
first : int
The starting vertex index in the vertex array. Default 0.
count : int
The number of vertices to draw. Default all.
"""
self.activate()
attributes = self._attributes.values()
# Get buffer size first attribute
# We need more tests here
# - do we have at least 1 attribute ?
# - does all attributes report same count ?
# count = (count or attributes[0].size) - first
if isinstance(indices, IndexBuffer):
indices.activate()
gltypes = {
np.dtype(np.uint8): gl.GL_UNSIGNED_BYTE,
np.dtype(np.uint16): gl.GL_UNSIGNED_SHORT,
np.dtype(np.uint32): gl.GL_UNSIGNED_INT,
}
gl.glDrawElements(mode, indices.size, gltypes[indices.dtype], None)
indices.deactivate()
else:
first = 0
# count = (self._count or attributes[0].size) - first
count = len(tuple(attributes)[0])
gl.glDrawArrays(mode, first, count)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
self.deactivate()
def draw(self, mode = gl.GL_TRIANGLES, indices=None): #first=0, count=None):
""" Draw using the specified mode & indices.
:param gl.GLEnum mode:
One of
* GL_POINTS
* GL_LINES
* GL_LINE_STRIP
* GL_LINE_LOOP,
* GL_TRIANGLES
* GL_TRIANGLE_STRIP
* GL_TRIANGLE_FAN
:param IndexBuffer|None indices:
Vertex indices to be drawn. If none given, everything is drawn.
"""
self.activate()
attributes = self._attributes.values()
# Get buffer size first attribute
# We need more tests here
# - do we have at least 1 attribute ?
# - does all attributes report same count ?
# count = (count or attributes[0].size) - first
if isinstance(indices, IndexBuffer):
indices.activate()
gltypes = { np.dtype(np.uint8) : gl.GL_UNSIGNED_BYTE,
np.dtype(np.uint16): gl.GL_UNSIGNED_SHORT,
np.dtype(np.uint32): gl.GL_UNSIGNED_INT }
gl.glDrawElements(mode, indices.size, gltypes[indices.dtype], None)
indices.deactivate()
else:
first = 0
# count = (self._count or attributes[0].size) - first
count = len(tuple(attributes)[0])
gl.glDrawArrays(mode, first, count)
gl.glBindBuffer( gl.GL_ARRAY_BUFFER, 0 )
self.deactivate()
def draw(self, mode = gl.GL_TRIANGLES, indices=None): #first=0, count=None):
""" Draw the attribute arrays in the specified mode.
Parameters
----------
mode : GL_ENUM
GL_POINTS, GL_LINES, GL_LINE_STRIP, GL_LINE_LOOP,
GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN
first : int
The starting vertex index in the vertex array. Default 0.
count : int
The number of vertices to draw. Default all.
"""
self.activate()
attributes = self._attributes.values()
# Get buffer size first attribute
# We need more tests here
# - do we have at least 1 attribute ?
# - does all attributes report same count ?
# count = (count or attributes[0].size) - first
if isinstance(indices, IndexBuffer):
indices.activate()
gltypes = { np.dtype(np.uint8) : gl.GL_UNSIGNED_BYTE,
np.dtype(np.uint16): gl.GL_UNSIGNED_SHORT,
np.dtype(np.uint32): gl.GL_UNSIGNED_INT }
gl.glDrawElements(mode, indices.size, gltypes[indices.dtype], None)
indices.deactivate()
else:
first = 0
# count = (self._count or attributes[0].size) - first
count = len(attributes[0])
gl.glDrawArrays(mode, first, count)
gl.glBindBuffer( gl.GL_ARRAY_BUFFER, 0 )
self.deactivate()
