class ShaderTerrainDemo(ShowBase):
def __init__(self):
# Load some configuration variables, its important for this to happen
# before the ShowBase is initialized
load_prc_file_data(
"", """
textures-power-2 none
gl-coordinate-system default
window-title Panda3D ShaderTerrainMesh Demo
""")
# Initialize the showbase
ShowBase.__init__(self)
# Increase camera FOV as well as the far plane
self.camLens.set_fov(90)
self.camLens.set_near_far(0.1, 10000)
# Start the Mapzen tool
"""
self.mzen = Mapzen(self.camera, self.loader, self.render, taskMgr,
3095, 6430, zoom=14)
self.mzen = Mapzen(self.camera, self.loader, self.render, taskMgr,
773, 1607, zoom=12)
self.mzen = Mapzen(self.camera, self.loader, self.render, taskMgr,
2149, 1445, zoom=12)
"""
self.mzen = Mapzen(self.camera,
self.loader,
self.render,
taskMgr,
773,
1607,
zoom=12)
base.finalExitCallbacks.append(self.exit)
base.exitFunc = self.exit
"""
# Construct the terrain
self.terrain_node = ShaderTerrainMesh()
# Set a heightfield, the heightfield should be a 16-bit png and
# have a quadratic size of a power of two.
self.terrain_node.heightfield = self.loader.loadTexture("elevation.png")
# Set the target triangle width. For a value of 10.0 for example,
# the terrain will attempt to make every triangle 10 pixels wide on screen.
self.terrain_node.target_triangle_width = 10.0
# Generate the terrain
self.terrain_node.generate()
# Attach the terrain to the main scene and set its scale. With no scale
# set, the terrain ranges from (0, 0, 0) to (1, 1, 1)
self.terrain = self.render.attach_new_node(self.terrain_node)
self.terrain.set_scale(1024, 1024, 100)
self.terrain.set_pos(-512, -512, -70.0)
# Set a shader on the terrain. The ShaderTerrainMesh only works with
# an applied shader. You can use the shaders used here in your own application
terrain_shader = Shader.load(Shader.SL_GLSL, "terrain.vert.glsl", "terrain.frag.glsl")
self.terrain.set_shader(terrain_shader)
self.terrain.set_shader_input("camera", self.camera)
# Set some texture on the terrain
grass_tex = self.loader.loadTexture("textures/grass.png")
grass_tex.set_minfilter(SamplerState.FT_linear_mipmap_linear)
grass_tex.set_anisotropic_degree(16)
self.terrain.set_texture(grass_tex)
"""
# Shortcut to view the wireframe mesh
self.accept("f3", self.toggleWireframe)
# Load a skybox - you can safely ignore this code
"""
skybox = self.loader.loadModel("models/skybox.bam")
skybox.reparent_to(self.render)
skybox.set_scale(20000)
skybox_texture = self.loader.loadTexture("textures/skybox.jpg")
skybox_texture.set_minfilter(SamplerState.FT_linear)
skybox_texture.set_magfilter(SamplerState.FT_linear)
skybox_texture.set_wrap_u(SamplerState.WM_repeat)
skybox_texture.set_wrap_v(SamplerState.WM_mirror)
skybox_texture.set_anisotropic_degree(16)
skybox.set_texture(skybox_texture)
skybox_shader = Shader.load(Shader.SL_GLSL, "skybox.vert.glsl", "skybox.frag.glsl")
skybox.set_shader(skybox_shader)
"""
self.setBackgroundColor(0.7, 0.7, 0.8)
# Initialize movement controller
self.controller = MovementController(self)
self.controller.set_initial_position_hpr(Vec3(0.0, 0.0, 1500.0),
Vec3(-90.0, 0.0, 0.0))
self.controller.speed = 5.0
self.controller.setup()
def exit(self):
self.mzen.stop()
