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TerrainNode.py
326 lines (231 loc) · 10.5 KB
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TerrainNode.py
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from panda3d.core import Texture, Vec2, Vec3, TexturePool, Filename, SamplerState
# from panda3d.core import
import BrainzCore
import time
VERBOSE = False
class TerrainNode:
mipmapMIN = SamplerState.FTLinearMipmapLinear
mipmapMAG = SamplerState.FTLinear
anisotropicFactor = 16
def __init__(self):
if VERBOSE:
print "Creating TerrainQuadtree"
self._plane_quadtree = BrainzCore.TerrainQuadtree()
self._plane_quadtree.setScale(Vec2(1))
self._plane_quadtree.setTesselationEnabled(True)
self._initialized = False
self._parent = None
self._element_node = None
self.heightmap_tex = None
self.flowmap_tex = None
self.setMaterials([])
self.setCompiledMaterialPath("")
self.setHeightfieldSize(2048)
self.setPosition(Vec3(0))
self.setChunkBounds(0,100)
self.setChunkSize(32)
self.setTargetTriangleWidth(8.0)
self.setDetailFactors(3,6)
self.setCullingEnabled(True)
try:
self._focal_camera = base.cam
self._focal_lens = base.camLens
except Exception, msg:
self._focal_camera = None
self._focal_lens = None
def setCullingEnabled(self, enabled):
self._plane_quadtree.setCullingEnabled(enabled)
def setPosition(self, pos):
assert(not self._initialized)
self._position = pos
self._plane_quadtree.setPosition(self._position)
def setHeightfieldSize(self, size):
assert(not self._initialized)
self._heightfield_size = size
self._plane_quadtree.setHeightfieldSize(size)
if VERBOSE:
print "_heightfield_size =",self._heightfield_size
def setMaterials(self, materials):
assert(not self._initialized)
self._materials = materials
if VERBOSE:
print "_materials =", materials
def setCompiledMaterialPath(self, pt):
assert(not self._initialized)
self._material_path = pt
if VERBOSE:
print "_material_path=", pt
def setChunkSize(self, size):
assert(not self._initialized)
self._chunk_size = size
self._plane_quadtree.setChunkSize(self._chunk_size)
if VERBOSE:
print "_chunk_size =",self._chunk_size
def setHeightmap(self, hmap_path):
assert(self._parent)
self.heightmap_tex = TexturePool.loadTexture(Filename.fromOsSpecific(hmap_path))
# self.heightmap_tex = loader.loadTexture(hmap_path)
self.heightmap_tex.setWrapU(SamplerState.WMClamp)
self.heightmap_tex.setWrapV(SamplerState.WMClamp)
self.heightmap_tex.setFormat(Texture.F_r16)
self.heightmap_tex.setKeepRamImage(False)
self.heightmap_tex.setMinfilter(SamplerState.FTLinearMipmapLinear)
self.heightmap_tex.setMagfilter(SamplerState.FTLinear)
self.heightmap_tex.setAnisotropicDegree(0)
self._element_node.setShaderInput("heightmap", self.heightmap_tex)
def setBlurredHeightmap(self, hmap_path):
assert(self._parent)
self.blurred_heightmap_tex = TexturePool.loadTexture(Filename.fromOsSpecific(hmap_path))
self.blurred_heightmap_tex.setWrapU(SamplerState.WMClamp)
self.blurred_heightmap_tex.setWrapV(SamplerState.WMClamp)
self.blurred_heightmap_tex.setFormat(Texture.F_r16)
self.blurred_heightmap_tex.setKeepRamImage(False)
self.blurred_heightmap_tex.setMinfilter(SamplerState.FTLinearMipmapLinear)
self.blurred_heightmap_tex.setMagfilter(SamplerState.FTLinear)
self.blurred_heightmap_tex.setAnisotropicDegree(0)
print "set blurred heightmap"
self._element_node.setShaderInput("blurredHeightmap", self.blurred_heightmap_tex)
def setDetailFactors(self, lowUntil, mediumUntil):
assert(not self._initialized)
self._plane_quadtree.setDetailFactors(lowUntil, mediumUntil)
def getHeightmap(self):
return self.heightmap_tex
def getLODNode(self, lod):
assert(lod >= 0 and lod < 3)
if lod == 0:
return self._plane_quadtree.get_low_detail_element()
if lod == 1:
return self._plane_quadtree.get_medium_detail_element()
if lod == 2:
return self._plane_quadtree.get_high_detail_element()
return False
def setFlowmap(self, fmap_path):
assert(self._parent)
self.flowmap_tex = loader.loadTexture(fmap_path)
self.flowmap_tex.setWrapU(SamplerState.WMClamp)
self.flowmap_tex.setWrapV(SamplerState.WMClamp)
self.flowmap_tex.setKeepRamImage(False)
self.flowmap_tex.setMinfilter(SamplerState.FTLinearMipmapLinear)
self.flowmap_tex.setMagfilter(SamplerState.FTLinear)
self.flowmap_tex.setAnisotropicDegree(2)
self._element_node.setShaderInput("flowmap", self.flowmap_tex)
def setSnowmap(self, smap_path):
assert(self._parent)
self.snowmap_tex = loader.loadTexture(smap_path)
self.snowmap_tex.setWrapU(SamplerState.WMClamp)
self.snowmap_tex.setWrapV(SamplerState.WMClamp)
self.snowmap_tex.setKeepRamImage(False)
self.snowmap_tex.setMinfilter(SamplerState.FTLinearMipmapLinear)
self.snowmap_tex.setMagfilter(SamplerState.FTLinear)
self.snowmap_tex.setAnisotropicDegree(2)
self._element_node.setShaderInput("snowmap", self.snowmap_tex)
def getFlowmap(self):
return self.flowmap_tex
def setDetailmap(self, dmap_path):
assert(self._parent)
self.detailmap_tex = loader.loadTexture(dmap_path)
self.detailmap_tex.setWrapU(SamplerState.WMRepeat)
self.detailmap_tex.setWrapV(SamplerState.WMRepeat)
self.detailmap_tex.setKeepRamImage(False)
self.detailmap_tex.setMinfilter(self.mipmapMIN)
self.detailmap_tex.setMagfilter(self.mipmapMAG)
self.detailmap_tex.setAnisotropicDegree(self.anisotropicFactor)
self._element_node.setShaderInput("details", self.detailmap_tex)
def setConvexitymap(self, cmap_path):
assert(self._parent)
self.convexmap_tex = loader.loadTexture(cmap_path)
self.convexmap_tex.setWrapU(SamplerState.WMRepeat)
self.convexmap_tex.setWrapV(SamplerState.WMRepeat)
self.convexmap_tex.setKeepRamImage(False)
self.convexmap_tex.setMinfilter(self.mipmapMIN)
self.convexmap_tex.setMagfilter(self.mipmapMAG)
self.convexmap_tex.setAnisotropicDegree(self.anisotropicFactor)
self._element_node.setShaderInput("convexity", self.convexmap_tex)
def getConvexmap(self):
return self.convexmap_tex
def setBasecolormap(self, cmap_path):
assert(self._parent)
self.basecolor_tex = loader.loadTexture(cmap_path)
self.basecolor_tex.setWrapU(SamplerState.WMRepeat)
self.basecolor_tex.setWrapV(SamplerState.WMRepeat)
self.basecolor_tex.setKeepRamImage(False)
self.basecolor_tex.setMinfilter(self.mipmapMIN)
self.basecolor_tex.setMagfilter(self.mipmapMAG)
self.basecolor_tex.setAnisotropicDegree(self.anisotropicFactor)
self._element_node.setShaderInput("basecolor", self.basecolor_tex)
def setChunkBounds(self, bottom, top):
self._chunk_bounds = (bottom, top)
self._plane_quadtree.setStaticBounds(*self._chunk_bounds)
if VERBOSE:
print "_chunk_bounds =",(self._chunk_bounds)
def loadChunkBoundsFromFile(self, filename, bottom, top):
try:
handle = open(filename, "rb")
content = handle.read()
handle.close()
self._plane_quadtree.setPrecomputedBounds(str(content), bottom, top)
except Exception, msg:
print "Could not open file:",msg
return False
def loadChunkBoundsFromString(self, data, bottom, top):
self._plane_quadtree.setPrecomputedBounds(str(data), bottom, top)
def setTargetTriangleWidth(self, width):
self._target_triangle_width = width
self._plane_quadtree.setTargetTriangleWidth(width)
if VERBOSE:
print "_target_triangle_width =",self._target_triangle_width
def setFocalCamera(self, cam):
self._focal_camera = cam
def setFocalLens(self, lens):
self._focal_lens = lens
def setParent(self, parent):
assert(not self._initialized and self._parent is None and not parent.is_empty())
self._parent = parent
self._element_node = parent.attachNewNode("terrain_root")
self._plane_quadtree.setParent(self._element_node)
def getElement(self):
return self._element_node
def getParent(self):
return self._parent
def getPosition(self):
return self._position
def initialize(self):
assert(not self._initialized)
assert(self._focal_camera is not None and self._focal_lens is not None)
assert(self._parent is not None)
if VERBOSE:
print "TerrainQuadtree - initialize"
t_init_begin = time.time()
if VERBOSE:
print "TerrainQuadtree - loading materials"
from os.path import join, isfile
state = SamplerState()
state.setWrapU(SamplerState.WMRepeat)
state.setWrapV(SamplerState.WMRepeat)
# t.setKeepRamImage(False)
# t.setMinfilter(SamplerState.FTLinear)
state.setMinfilter(self.mipmapMIN)
state.setMagfilter(self.mipmapMAG)
state.setAnisotropicDegree(8)
for material in self._materials:
tex0 = join(self._material_path, "{0}_1.png".format(material))
tex1 = join(self._material_path, "{0}_2.png".format(material))
assert(isfile(tex0) and isfile(tex1))
tex0t = loader.loadTexture(tex0)
tex1t = loader.loadTexture(tex1)
tex0t.setFormat(Texture.FSrgbAlpha)
tex1t.setFormat(Texture.FRgba)
self._element_node.setShaderInput("mt_{0}_0".format(material), tex0t, state)
self._element_node.setShaderInput("mt_{0}_1".format(material), tex1t, state)
self._initialized = True
self._plane_quadtree.setFocalCamera(self._focal_camera)
self._plane_quadtree.setFocalLens(self._focal_lens)
self._plane_quadtree.init()
if VERBOSE:
t_init_end = time.time()
t_init = t_init_end - t_init_begin
print t_init * 1000.0, "ms to initialize"
self.update()
def update(self):
assert(self._initialized)
self._plane_quadtree.update()