<commit_before>#!/usr/bin/env python

# Author: tobspr
#
# Last Updated: 2016-04-30
#
# This tutorial provides an example of using the ShaderTerrainMesh class

from direct.showbase.ShowBase import ShowBase
from panda3d.core import ShaderTerrainMesh, Shader, load_prc_file_data
from panda3d.core import SamplerState


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, 50000)

        # 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("heightfield.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)<commit_msg>samples: set heightfield to clamp mode in shader-terrain sample<commit_after>#!/usr/bin/env python

# Author: tobspr
#
# Last Updated: 2016-04-30
#
# This tutorial provides an example of using the ShaderTerrainMesh class

from direct.showbase.ShowBase import ShowBase
from panda3d.core import ShaderTerrainMesh, Shader, load_prc_file_data
from panda3d.core import SamplerState


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, 50000)

        # 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.
        heightfield = self.loader.loadTexture("heightfield.png")
        heightfield.wrap_u = SamplerState.WM_clamp
        heightfield.wrap_v = SamplerState.WM_clamp
        self.terrain_node.heightfield = heightfield

        # 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)
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