def drawBody(self, pos, quat, radius=1, keepDrawing=True, numVertices=16):
"""
this draws the body of the tree. This draws a ring of vertices and
connects the rings with triangles to from the body.
the keepDrawing parameter tells the function whether or not we're
at an end
if the vertices before were an end, don't draw branches to it
"""
vdata = self.bodydata
circleGeom = Geom(vdata)
vertWriter = GeomVertexWriter(vdata, "vertex")
normalWriter = GeomVertexWriter(vdata, "normal")
texReWriter = GeomVertexRewriter(vdata, "texcoord")
startRow = vdata.getNumRows()
vertWriter.setRow(startRow)
normalWriter.setRow(startRow)
sCoord = 0
if (startRow != 0):
texReWriter.setRow(startRow - numVertices)
sCoord = texReWriter.getData2f().getX() + 1
draw = (startRow - numVertices) in self.drawFlags
if not draw:
sCoord -= 1
drawIndex = startRow
texReWriter.setRow(startRow)
angleSlice = 2 * math.pi / numVertices
currAngle = 0
perp1 = quat.getRight()
perp2 = quat.getForward()
#vertex information is written here
for i in xrange(numVertices + 1):
#doubles the last vertex to fix UV seam
adjCircle = pos + (perp1 * math.cos(currAngle) +
perp2 * math.sin(currAngle)) * radius
normal = perp1 * math.cos(currAngle) + perp2 * math.sin(currAngle)
normalWriter.addData3f(normal)
vertWriter.addData3f(adjCircle)
texReWriter.addData2f(1.0 * i / numVertices, sCoord)
if keepDrawing:
self.drawFlags.add(drawIndex)
drawIndex += 1
currAngle += angleSlice
draw = (startRow - numVertices) in self.drawFlags
#we cant draw quads directly so we use Tristrips
if (startRow != 0) and draw:
lines = GeomTristrips(Geom.UHStatic)
for i in xrange(numVertices + 1):
lines.addVertex(i + startRow)
lines.addVertex(i + startRow - numVertices - 1)
lines.addVertex(startRow)
lines.addVertex(startRow - numVertices)
lines.closePrimitive()
#lines.decompose()
circleGeom.addPrimitive(lines)
circleGeomNode = GeomNode("Debug")
circleGeomNode.addGeom(circleGeom)
self.numPrimitives += numVertices * 2
self.bodies.attachNewNode(circleGeomNode)
def drawBody(nodePath,
vdata,
pos,
vecList,
radius=1,
keepDrawing=True,
numVertices=8):
circleGeom = Geom(vdata)
vertWriter = GeomVertexWriter(vdata, "vertex")
colorWriter = GeomVertexWriter(vdata, "color")
normalWriter = GeomVertexWriter(vdata, "normal")
drawReWriter = GeomVertexRewriter(vdata, "drawFlag")
texReWriter = GeomVertexRewriter(vdata, "texcoord")
startRow = vdata.getNumRows()
vertWriter.setRow(startRow)
colorWriter.setRow(startRow)
normalWriter.setRow(startRow)
sCoord = 0
if (startRow != 0):
texReWriter.setRow(startRow - numVertices)
sCoord = texReWriter.getData2f().getX() + 1
drawReWriter.setRow(startRow - numVertices)
if (drawReWriter.getData1f() == False):
sCoord -= 1
drawReWriter.setRow(startRow)
texReWriter.setRow(startRow)
angleSlice = 2 * math.pi / numVertices
currAngle = 0
#axisAdj=LMatrix4.rotateMat(45, axis)*LMatrix4.scaleMat(radius)*LMatrix4.translateMat(pos)
perp1 = vecList[1]
perp2 = vecList[2]
# vertex information is written here
for i in range(numVertices):
adjCircle = pos + \
(perp1 * math.cos(currAngle) + perp2 * math.sin(currAngle)) * \
radius
normal = perp1 * math.cos(currAngle) + perp2 * math.sin(currAngle)
normalWriter.addData3f(normal)
vertWriter.addData3f(adjCircle)
texReWriter.addData2f(sCoord, (i + 0.001) / (numVertices - 1))
colorWriter.addData4f(0.5, 0.5, 0.5, 1)
drawReWriter.addData1f(keepDrawing)
currAngle += angleSlice
if startRow == 0:
return
drawReader = GeomVertexReader(vdata, "drawFlag")
drawReader.setRow(startRow - numVertices)
# we cant draw quads directly so we use Tristrips
if drawReader.getData1i() != 0:
lines = GeomTristrips(Geom.UHStatic)
half = int(numVertices * 0.5)
for i in range(numVertices):
lines.addVertex(i + startRow)
if i < half:
lines.addVertex(i + startRow - half)
else:
lines.addVertex(i + startRow - half - numVertices)
lines.addVertex(startRow)
lines.addVertex(startRow - half)
lines.closePrimitive()
lines.decompose()
circleGeom.addPrimitive(lines)
circleGeomNode = GeomNode("Debug")
circleGeomNode.addGeom(circleGeom)
# I accidentally made the front-face face inwards. Make reverse makes the tree render properly and
# should cause any surprises to any poor programmer that tries to use
# this code
circleGeomNode.setAttrib(CullFaceAttrib.makeReverse(), 1)
global numPrimitives
numPrimitives += numVertices * 2
nodePath.attachNewNode(circleGeomNode)
def drawBody(nodePath, vdata, pos, vecList, radius=1, keepDrawing=True, numVertices=8):
circleGeom = Geom(vdata)
vertWriter = GeomVertexWriter(vdata, "vertex")
colorWriter = GeomVertexWriter(vdata, "color")
normalWriter = GeomVertexWriter(vdata, "normal")
drawReWriter = GeomVertexRewriter(vdata, "drawFlag")
texReWriter = GeomVertexRewriter(vdata, "texcoord")
startRow = vdata.getNumRows()
vertWriter.setRow(startRow)
colorWriter.setRow(startRow)
normalWriter.setRow(startRow)
sCoord = 0
if (startRow != 0):
texReWriter.setRow(startRow - numVertices)
sCoord = texReWriter.getData2f().getX() + 1
drawReWriter.setRow(startRow - numVertices)
if(drawReWriter.getData1f() == False):
sCoord -= 1
drawReWriter.setRow(startRow)
texReWriter.setRow(startRow)
angleSlice = 2 * math.pi / numVertices
currAngle = 0
#axisAdj=LMatrix4.rotateMat(45, axis)*LMatrix4.scaleMat(radius)*LMatrix4.translateMat(pos)
perp1 = vecList[1]
perp2 = vecList[2]
# vertex information is written here
for i in range(numVertices):
adjCircle = pos + \
(perp1 * math.cos(currAngle) + perp2 * math.sin(currAngle)) * \
radius
normal = perp1 * math.cos(currAngle) + perp2 * math.sin(currAngle)
normalWriter.addData3f(normal)
vertWriter.addData3f(adjCircle)
texReWriter.addData2f(sCoord, (i + 0.001) / (numVertices - 1))
colorWriter.addData4f(0.5, 0.5, 0.5, 1)
drawReWriter.addData1f(keepDrawing)
currAngle += angleSlice
drawReader = GeomVertexReader(vdata, "drawFlag")
drawReader.setRow(startRow - numVertices)
# we cant draw quads directly so we use Tristrips
if (startRow != 0) & (drawReader.getData1f() != False):
lines = GeomTristrips(Geom.UHStatic)
half = int(numVertices * 0.5)
for i in range(numVertices):
lines.addVertex(i + startRow)
if i < half:
lines.addVertex(i + startRow - half)
else:
lines.addVertex(i + startRow - half - numVertices)
lines.addVertex(startRow)
lines.addVertex(startRow - half)
lines.closePrimitive()
lines.decompose()
circleGeom.addPrimitive(lines)
circleGeomNode = GeomNode("Debug")
circleGeomNode.addGeom(circleGeom)
# I accidentally made the front-face face inwards. Make reverse makes the tree render properly and
# should cause any surprises to any poor programmer that tries to use
# this code
circleGeomNode.setAttrib(CullFaceAttrib.makeReverse(), 1)
global numPrimitives
numPrimitives += numVertices * 2
nodePath.attachNewNode(circleGeomNode)