ogl Package

ogl Package

axis_ogl Module

class pyparticles.ogl.axis_ogl.AxisOgl

Bases: object

axis_len

axis_planes_codes()

draw_arrow(color, axis, leng=None)

draw_axis()

draw_axis_procedure()

draw_plane(plane='xy', color=(0.7, 0.7, 0.7, 0.3), leng=None)

get_axis_len()

ogl_init()

set_axis_len(leng)

draw_particles_ogl Module

class pyparticles.ogl.draw_particles_ogl.DrawParticlesGL(pset=None)

Bases: object

DRAW_MODEL_LOOP = 0

DRAW_MODEL_VECTOR = 1

PARTICLE_MODEL_POINT = 'point'

PARTICLE_MODEL_SPHERE = 'sphere'

PARTICLE_MODEL_TEAPOT = 'teapot'

color_fun

Set and get the function for calculating the particle color: definition of the function color, it take as args a particle_set obj. and the particle index (R,G,B,A) = cfun( pset , index )

draw()

draw_particle(pset, i)

draw_particle_sphere(pset, i)

draw_particle_teapot(pset, i)

draw_trajectory()

get_color_fun(fun)

get_pcolor()

get_pset()

get_trajectory()

get_trajectory_step()

get_vect_color_fun(fun)

init_sphere_dl()

init_teapot_dl()

ogl_init()

Initialize opengl display lists (must be called after glutInit!)

pset

set_color_fun(fun)

set_draw_model(model)

set_particle_model(model='', user_fun=None)

set_pset(pset)

set_trajectory(tr)

set_trajectory_step(trs)

set_vect_color_fun(fun)

trajectory

enable or disable the trajectory

trajectory_step

set or get the step for drawing the trajectory

vect_color_fun

get and set the vector color function

pyparticles.ogl.draw_particles_ogl.charged_particles_color(pset, i)

pyparticles.ogl.draw_particles_ogl.charged_particles_vect_color(RGBA, pset)

pyparticles.ogl.draw_particles_ogl.rand_vect_colors(RGBA, pset)

draw_vector_field Module

class pyparticles.ogl.draw_vector_field.DrawVectorField(limits, density)

Bases: object

Draw the given vector fields.

Constructor:

Parameters:

• limits – size of the draw volume: (x_min,x_max,y_min,y_max,z_min,z_max)
• density – distance between the plotted vectors

add_vector_fun(fun, unit_len=1.0, color_fun=None, key=None, time_dep=False)

Insert a new vector function,

fun : Vector filed function color_fun : Colors function key : [optional] a key used for distinguish the vector field time_dep : [True or False ] if True Is a time dependent filed

where functions are defined:

fun( V , X ) color_fun( RGBA , X )

X : (n by DIM) coordinates array

V : (n by DIM) resulting vector field

RGBA : (n by 4) colors array

draw()

ogl_init()

trackball Module

class pyparticles.ogl.trackball.TrackBall(w_size)

Bases: object

Class used for controlling the rotation of the scene via mouse or joystick, by generating the virtual trackball effect

Constructor

Arguments
w_size	size of the window

Example:

Event On click:

( x , y ) = get_click_coords_on_window()
trk.track_ball_mapping( [ x , y ] )

Event On Move:

( x , y ) = get_current_coords_on_window()
( rot_axis , rot_angle ) = trk.on_move( [ x , y ] )
glRotatef( rot_angle , rot_axis[0] , rot_axis[1] , rot_axis[2] )

V

get_V()

get_win_size()

on_joystick(jaxes)

Given the axes ( x and y ) of the joystick; it returns the axis and the angle of rotation. Example:

( rot_axis , rot_angle ) = trk.on_joystick( [ x , y ] )

on_move(point)

function to be called when the mouse is moved. argument requires the coordinates of the mouse pointer and it returns the axis of rotation and angle.

set_V(v)

set_win_size(w_size)

track_ball_mapping(point)

Function to be called after a click on the mouse or at beginnig of the rotation, it takes the current coordinates of the pointer.

win_size

translate_scene Module

class pyparticles.ogl.translate_scene.TranslateScene(w_size)

Bases: object

V

fovy

get_V()

get_fovy()

get_win_size()

on_move(point)

set_V(v)

set_fovy(fv)

set_win_size(w_size)

translate_mapping(point)

win_size