def on_draw():
# clears the background with the background color
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# wire-frame mode
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
data_points.draw()
# gl.glPointSize(10)
# pyglet.graphics.draw(len(data_points), gl.GL_POINTS, #v3f/stream c4B/static
# ('v3f', data_points.reshape(-1)),
# ('c4B', data_points_color.reshape(-1)))
# gl.glPointSize(1)
# gl.glBegin(gl.GL_POINTS)
gl.glBegin(gl.GL_LINES)
gl.glColor4fv((gl.GLfloat * 4)(1, 0, 0, 1))
gl.glVertex3f(10.0, 10.0, 20)
gl.glVertex3f(0.0, 0.0, 20)
gl.glEnd()
surface.draw('b')
surface1.draw('g')
def draw(self, transformation, **kwargs):
transformation.scale(self.width, self.height, 1)
color = self.color + (self.opacity,)
gl.glColor4fv((gl.GLfloat * 4)(*color))
gl.glEnableClientState(gl.GL_VERTEX_ARRAY)
gl.glVertexPointer(2, gl.GL_FLOAT, 0, self.vertices)
gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)
def blit_buffer(self, framebuffer, parent_width, parent_height, **kwargs):
"""Draw the texture into the parent scene
.. warning:
This method's arguments are not part of the API yet and may change
at any time.
"""
gl.glViewport(0, 0, parent_width, parent_height)
gl.glTexParameteri(gl.GL_TEXTURE_2D,
gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
gl.glBindTexture(gl.GL_TEXTURE_2D, framebuffer.texture_id)
gl.glEnable(gl.GL_TEXTURE_2D)
gl.glColor4fv((gl.GLfloat * 4)(*self.color + (self.opacity, )))
gl.glBlendFunc(gl.GL_ONE, gl.GL_ONE_MINUS_SRC_ALPHA) # premultipl.
gl.glBegin(gl.GL_TRIANGLE_STRIP)
gl.glTexCoord2f(0, 0)
gl.glVertex2i(0, 0)
gl.glTexCoord2f(0, parent_height)
gl.glVertex2i(0, parent_height)
gl.glTexCoord2f(parent_width, 0)
gl.glVertex2i(parent_width, 0)
gl.glTexCoord2f(parent_width, parent_height)
gl.glVertex2i(parent_width, parent_height)
gl.glEnd()
gl.glTexParameteri(gl.GL_TEXTURE_2D,
gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
gl.glDisable(gl.GL_TEXTURE_2D)
gl.glTexParameteri(gl.GL_TEXTURE_2D,
gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glViewport(0, 0, parent_width, parent_height)
