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authorAdrian Kummerlaender2019-09-23 19:39:03 +0200
committerAdrian Kummerlaender2019-09-23 19:39:03 +0200
commit191c425e06c040afc0e24fec9c854090fa032461 (patch)
tree819435fc20f264e8b4c25ca257904039cb5b6428
parent087d7fd7908f6b68f73aa0a08b00c7f18afeb5b3 (diff)
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Use new projection utilities in LDC 3Dvisualization
-rw-r--r--ldc_3d_gl_interop.py84
-rw-r--r--template/particles.mako10
2 files changed, 23 insertions, 71 deletions
diff --git a/ldc_3d_gl_interop.py b/ldc_3d_gl_interop.py
index a8a10b6..a858665 100644
--- a/ldc_3d_gl_interop.py
+++ b/ldc_3d_gl_interop.py
@@ -2,7 +2,6 @@ import numpy
from string import Template
from simulation import Lattice, Geometry
-from utility.opengl import MomentsVertexBuffer
from utility.particles import Particles
from symbolic.generator import LBM
@@ -13,7 +12,9 @@ from OpenGL.GLUT import *
from OpenGL.GL import shaders
-from pyrr import matrix44, quaternion
+from utility.projection import Projection, Rotation
+from utility.opengl import MomentsVertexBuffer
+from utility.mouse import MouseDragMonitor
lattice_x = 64
lattice_y = 96
@@ -52,39 +53,6 @@ boundary = Template("""
"lid_speed": lid_speed
})
-def get_projection(width, height):
- world_width = lattice_x
- world_height = world_width / width * height
-
- projection = matrix44.create_perspective_projection(45.0, width/height, 0.1, 1000.0)
- look = matrix44.create_look_at(
- eye = [0, -2*lattice_y, 0],
- target = [0, 0, 0],
- up = [0, 0, -1])
-
- point_size = 1
-
- return numpy.matmul(look, projection), point_size
-
-class Rotation:
- def __init__(self, shift, x = numpy.pi, z = numpy.pi):
- self.shift = shift
- self.rotation_x = x
- self.rotation_z = z
-
- def update(self, x, z):
- self.rotation_x += x
- self.rotation_z += z
-
- def get(self):
- qx = quaternion.Quaternion(quaternion.create_from_eulers([self.rotation_x,0,0]))
- qz = quaternion.Quaternion(quaternion.create_from_eulers([0,0,self.rotation_z]))
- rotation = qz.cross(qx)
- return numpy.matmul(
- matrix44.create_from_translation(self.shift),
- matrix44.create_from_quaternion(rotation)
- )
-
def glut_window(fullscreen = False):
glutInit(sys.argv)
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH)
@@ -154,10 +122,12 @@ void main(){
}""", GL_FRAGMENT_SHADER)
particle_program = shaders.compileProgram(particle_shader, fragment_shader)
-projection_id = shaders.glGetUniformLocation(particle_program, 'projection')
-rotation_id = shaders.glGetUniformLocation(particle_program, 'rotation')
+particle_projection_id = shaders.glGetUniformLocation(particle_program, 'projection')
+particle_rotation_id = shaders.glGetUniformLocation(particle_program, 'rotation')
geometry_program = shaders.compileProgram(vertex_shader, fragment_shader)
+geometry_projection_id = shaders.glGetUniformLocation(geometry_program, 'projection')
+geometry_rotation_id = shaders.glGetUniformLocation(geometry_program, 'rotation')
lattice = Lattice(
descriptor = D3Q19,
@@ -183,6 +153,7 @@ particles = Particles(
8*lattice.geometry.size_z//10:9*lattice.geometry.size_z//10:10j,
].reshape(3,-1).T)
+projection = Projection(distance = 2*lattice_x)
rotation = Rotation([-lattice_x/2, -lattice_y/2, -lattice_z/2])
cube_vertices, cube_edges = lattice.geometry.wireframe()
@@ -201,18 +172,18 @@ def on_display():
glClear(GL_COLOR_BUFFER_BIT)
shaders.glUseProgram(particle_program)
- glUniformMatrix4fv(projection_id, 1, False, numpy.ascontiguousarray(projection))
- glUniformMatrix4fv(rotation_id, 1, False, numpy.ascontiguousarray(rotation.get()))
+ glUniformMatrix4fv(particle_projection_id, 1, False, numpy.ascontiguousarray(projection.get()))
+ glUniformMatrix4fv(particle_rotation_id, 1, False, numpy.ascontiguousarray(rotation.get()))
particles.bind()
glEnable(GL_POINT_SMOOTH)
- glPointSize(point_size)
+ glPointSize(1)
glDrawArrays(GL_POINTS, 0, particles.count)
shaders.glUseProgram(geometry_program)
- glUniformMatrix4fv(projection_id, 1, False, numpy.ascontiguousarray(projection))
- glUniformMatrix4fv(rotation_id, 1, False, numpy.ascontiguousarray(rotation.get()))
+ glUniformMatrix4fv(geometry_projection_id, 1, False, numpy.ascontiguousarray(projection.get()))
+ glUniformMatrix4fv(geometry_rotation_id, 1, False, numpy.ascontiguousarray(rotation.get()))
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
- glLineWidth(2*point_size)
+ glLineWidth(2)
glBegin(GL_LINES)
for i, j in cube_edges:
glVertex3fv(cube_vertices[i])
@@ -221,32 +192,19 @@ def on_display():
glutSwapBuffers()
-def on_reshape(width, height):
- global projection, point_size
- glViewport(0,0,width,height)
- projection, point_size = get_projection(width, height)
-
-def on_keyboard(key, x, y):
- global rotation
-
- x = {
- b'w': -numpy.pi/10,
- b's': numpy.pi/10
- }.get(key, 0.0)
- z = {
- b'a': numpy.pi/10,
- b'd': -numpy.pi/10
- }.get(key, 0.0)
-
- rotation.update(x,z)
+mouse_monitor = MouseDragMonitor(
+ GLUT_LEFT_BUTTON,
+ drag_callback = lambda dx, dy: rotation.update(0.005*dy, 0.005*dx),
+ zoom_callback = lambda zoom: projection.update_distance(5*zoom))
def on_timer(t):
glutTimerFunc(t, on_timer, t)
glutPostRedisplay()
glutDisplayFunc(on_display)
-glutReshapeFunc(on_reshape)
-glutKeyboardFunc(on_keyboard)
+glutReshapeFunc(lambda w, h: projection.update_ratio(w, h))
+glutMouseFunc(mouse_monitor.on_mouse)
+glutMotionFunc(mouse_monitor.on_mouse_move)
glutTimerFunc(10, on_timer, 10)
glutMainLoop()
diff --git a/template/particles.mako b/template/particles.mako
index 6235307..cee3f4b 100644
--- a/template/particles.mako
+++ b/template/particles.mako
@@ -19,16 +19,10 @@ __kernel void update_particles(__global __read_only float4* moments,
if (material[gid] == 1 && particle.w < 1.0) {
particle.x += moment.y;
particle.y += moment.z;
-% if descriptor.d == 2:
- particle.w += min(particle.x, particle.y) * aging;
-% elif descriptor.d == 3:
+% if descriptor.d == 3:
particle.z += moment.w;
- float dy = (particle.y-${geometry.size_y/2.0});
- float dz = (particle.z-${geometry.size_z/2.0});
- dy *= dy;
- dz *= dz;
- particle.w = 10.0*sqrt(moment.y*moment.y+moment.z*moment.z+moment.w*moment.w);
% endif
+ particle.w += min(particle.x, particle.y) * aging;
} else {
particle.xyz = init_particles[pid].xyz;
particle.w = particle.w-1.0;