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lego.py
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lego.py
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'''
Created on 2013.04.03.
@author: arsene
'''
import sys,os
import OpenGL.GL as GL
import OpenGL.GLU as GLU
import numpy as np
import pygame
from pygame import error as PygameError
from gui import layer_manager
try:
__image = pygame.image.load(os.path.join('data','legocap.png'))
except PygameError as e:
print e.message
sys.exit(1)
LEGO_CAP_WIDTH = __image.get_width()
LEGO_CAP_HEIGHT = __image.get_height()
LEGO_SMALL_HEIGHT = 0.32
LEGO_BIG_HEIGHT = 0.96
LEGO_BUMP_HEIGHT = 0.17
LEGO_HALF_BUMP_DIST = 0.15
LEGO_BUMP_RADIUS = 0.25
LEGO_GRID = 2*(LEGO_BUMP_RADIUS+LEGO_HALF_BUMP_DIST)
LEGO_BIG = True
LEGO_SMALL = False
SCREEN_WIDTH = None
SCREEN_HEIGHT = None
class LoopError( ValueError ):
def __init__( self, message, errno=None ):
super(ValueError, self).__init__(message)
self.errno = errno
class piece( object ):
def __init__( self, sides, size, color, position = (0.0, 0.0, 0.0) ):
self.sides = sides
self.color = color
self.size = size
self.position = np.array(position)
height = LEGO_BIG_HEIGHT if self.size else LEGO_SMALL_HEIGHT
length = self.bottom - self.top
combine = lambda _points, _vertices, _weights: _points
self.__tess = GLU.gluNewTess()
GLU.gluTessCallback(self.__tess, GLU.GLU_TESS_BEGIN, GL.glBegin)
GLU.gluTessCallback(self.__tess,GLU.GLU_TESS_VERTEX,GL.glVertex3fv)
GLU.gluTessCallback(self.__tess,GLU.GLU_TESS_COMBINE,combine)
GLU.gluTessCallback(self.__tess, GLU.GLU_TESS_END, GL.glEnd)
GLU.gluTessProperty(self.__tess, GLU.GLU_TESS_WINDING_RULE, GLU.GLU_TESS_WINDING_ODD)
self.__gllist = GL.glGenLists(1)
GL.glNewList(self.__gllist,GL.GL_COMPILE)
GL.glColor3fv(self.color)
GL.glBindTexture(GL.GL_TEXTURE_2D,0)
GLU.gluTessNormal(self.__tess, 0.0, 1.0, 0.0)
GL.glNormal3f(0.0, 1.0, 0.0)
GLU.gluTessBeginPolygon(self.__tess,None)
GLU.gluTessBeginContour(self.__tess)
for i in range(0,len(self.coords)):
vertex = (self.coords[i][0]*LEGO_GRID, height, self.coords[i-1][1]*LEGO_GRID)
GLU.gluTessVertex(self.__tess, vertex, vertex)
vertex = (self.coords[i][0]*LEGO_GRID, height, self.coords[i][1]*LEGO_GRID)
GLU.gluTessVertex(self.__tess, vertex, vertex)
GLU.gluTessEndContour(self.__tess)
GLU.gluTessEndPolygon(self.__tess)
for i in range(0,len(self.coords)):
GL.glBegin(GL.GL_QUADS)
sign = float(np.sign(self.sides[2*i-1]))
GL.glNormal3f( sign, 0.0, 0.0 )
GL.glVertex3f( self.coords[i][0] * LEGO_GRID, height, self.coords[i-1][1] * LEGO_GRID)
GL.glVertex3f( self.coords[i][0] * LEGO_GRID, height, self.coords[i] [1] * LEGO_GRID)
GL.glVertex3f( self.coords[i][0] * LEGO_GRID, 0.0, self.coords[i] [1] * LEGO_GRID)
GL.glVertex3f( self.coords[i][0] * LEGO_GRID, 0.0, self.coords[i-1][1] * LEGO_GRID)
sign = float(np.sign(self.sides[2*i-2]))
GL.glNormal3f( 0.0, 0.0, -sign )
GL.glVertex3f( self.coords[i-1][0] * LEGO_GRID, height, self.coords[i-1][1] * LEGO_GRID )
GL.glVertex3f( self.coords[i] [0] * LEGO_GRID, height, self.coords[i-1][1] * LEGO_GRID )
GL.glVertex3f( self.coords[i] [0] * LEGO_GRID, 0.0, self.coords[i-1][1] * LEGO_GRID )
GL.glVertex3f( self.coords[i-1][0] * LEGO_GRID, 0.0, self.coords[i-1][1] * LEGO_GRID )
GL.glEnd()
GL.glTranslatef( self.left*LEGO_GRID + LEGO_GRID/2.0, (LEGO_BUMP_HEIGHT+height)/2.0 , self.bottom*LEGO_GRID - LEGO_GRID/2.0 )
for i in range( self.left, self.right ):
for j in range( self.bottom, self.top ):
GL.glTranslatef( 0.0, 0.0, LEGO_GRID )
if self.is_hit( (i+0.5,j+0.5) ):
_caped_cylinder( LEGO_BUMP_RADIUS, height+LEGO_BUMP_HEIGHT, 32 )
GL.glTranslatef( 0.0, 0.0, length*LEGO_GRID )
GL.glTranslatef( LEGO_GRID, 0.0, 0.0 )
GL.glEndList()
def __del__( self ):
if hasattr( self,'__tess' ):
# checking this might be speared, but shit happens ?
GLU.gluDeleteTess( self.__tess )
@property
def position( self ):
return self.__position
@position.setter
def position( self, position ):
self.__position = position
self.__real_position = (position[0] * LEGO_GRID, position[1] * LEGO_BIG_HEIGHT, position[2] * LEGO_GRID )
@property
def sides( self ):
return self.__sides
@sides.setter
def sides( self, sides ):
self.__is_closed( sides )
self.__sides = sides
@classmethod
def is_closed( cls, sides ):
length = len( sides )
if length < 4:
raise LoopError("Too few sides given to describe a rectangular shape", 1001)
if length % 2 == 1:
raise LoopError("Odd number of sides can't border a rectangular shape", 1002)
xmax=0
xmin=0
zmax=0
zmin=0
horizontal = [0]
for i,s in enumerate( sides[::2] ):
x = horizontal[i] + s
horizontal.append(x)
if x > xmax:
xmax = x
if x < xmin:
xmin = x
vertical = [0]
for j,s in enumerate( sides[1::2] ):
z = vertical[j] + s
vertical.append( z )
if z > zmax:
zmax = z
if z < zmin:
zmin = z
i+=1
j+=1
if vertical[j] and horizontal[i]:
raise LoopError("Neither even nor odd indexed sides are closed", 1020)
if vertical[j]:
raise LoopError("Even indexed sides are not closed", 1000)
if horizontal[i]:
raise LoopError("Odd indexed sides are not closed", 1010)
return tuple( np.array(i) for i in zip(horizontal[:-1], vertical[:-1]) ), xmax, xmin, zmax, zmin
def __is_closed(self, sides):
self.coords, self.right, self.left, self.top, self.bottom = self.__class__.is_closed(sides)
def is_hit( self, point ):
x = point[0]
y = point[1]
odd = False
for i in range(0, len(self.coords) ):
if (self.coords[i][0] > x) and ((self.coords[i][1] > y) != (self.coords[i-1][1] >y)) :
odd = not odd
return odd
def draw( self ):
GL.glPushMatrix()
GL.glTranslatef( *self.__real_position )
GL.glCallList( self.__gllist )
GL.glPopMatrix()
def gl_init( width, height ):
global __legocaptex,__quadratic
setviewport(width, height)
__legocaptex = layer_manager.load_2d_texture(pygame.image.tostring(__image, "RGBA"), LEGO_CAP_WIDTH, LEGO_CAP_HEIGHT)
__quadratic = GLU.gluNewQuadric()
GLU.gluQuadricTexture(__quadratic, GLU.GLU_TRUE)
GLU.gluQuadricDrawStyle(__quadratic,GLU.GLU_FILL)
GLU.gluQuadricOrientation(__quadratic, GLU.GLU_OUTSIDE)
GLU.gluQuadricNormals(__quadratic, GLU.GLU_SMOOTH)
GL.glClearColor( 0.0, 0.2, 0.5, 1.0 )
GL.glEnable(GL.GL_POINT_SMOOTH)
GL.glEnable(GL.GL_LINE_SMOOTH)
GL.glEnable(GL.GL_TEXTURE_2D)
GL.glEnable(GL.GL_ALPHA_TEST)
GL.glEnable(GL.GL_COLOR_MATERIAL)
GL.glDisable(GL.GL_CULL_FACE)
GL.glAlphaFunc(GL.GL_GREATER,0.1)
GL.glClearAccum(0.0, 0.0, 0.0, 1.0)
GL.glClear(GL.GL_ACCUM_BUFFER_BIT)
#GL.glGenLists(1)
draw_mode_3d()
def setviewport( width, height ):
global SCREEN_WIDTH, SCREEN_HEIGHT
SCREEN_WIDTH = width
SCREEN_HEIGHT = height
GL.glViewport( 0, 0, width, height )
def draw_mode_2d( pick=(0,0) ):
global SCREEN_WIDTH, SCREEN_HEIGHT
GL.glMatrixMode(GL.GL_PROJECTION)
GL.glLoadIdentity()
if GL.glGetInteger(GL.GL_RENDER_MODE) == GL.GL_SELECT:
GLU.gluPickMatrix( pick[0], SCREEN_HEIGHT-pick[1], 10, 10, np.array((0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)) )
GL.glOrtho(0.0, SCREEN_WIDTH, SCREEN_HEIGHT, 0.0, -1.0, 10.0)
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glLoadIdentity()
GL.glClear(GL.GL_DEPTH_BUFFER_BIT)
# GL.glDisable(GL_COLOR_MATERIAL)
GL.glDisable(GL.GL_DEPTH_TEST)
GL.glDisable(GL.GL_LIGHTING)
def draw_mode_3d( pick=(0,0) ):
global SCREEN_WIDTH, SCREEN_HEIGHT
GL.glMatrixMode(GL.GL_PROJECTION)
GL.glLoadIdentity()
if GL.glGetInteger(GL.GL_RENDER_MODE) == GL.GL_SELECT:
GLU.gluPickMatrix( pick[0], SCREEN_HEIGHT-pick[1], 1.0, 1.0, np.array((0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)) )
GLU.gluPerspective(45.0, float(SCREEN_WIDTH)/float(SCREEN_HEIGHT), 0.1, 100.0)
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glLoadIdentity()
GL.glScale( 1.0, 1.0, -1.0 )
# GL.glEnable(GL_COLOR_MATERIAL)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glEnable(GL.GL_LIGHTING)
def finish():
global __quadratic
try:
GLU.gluDeleteQuadric(__quadratic)
except NameError as e:
print e.message
def draw_grid( level ):
GL.glDisable(GL.GL_LIGHTING)
ls = GL.glGetFloat(GL.GL_LINE_WIDTH)
GL.glLineWidth(3.0)
GL.glColor3f(0.2, 0.5, 0.5)
GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
GL.glBegin(GL.GL_LINES)
half_interval = 10
for i in range(-half_interval, half_interval+1):
GL.glVertex3f( i * LEGO_GRID, level * LEGO_BIG_HEIGHT, half_interval * LEGO_GRID )
GL.glVertex3f( i * LEGO_GRID, level * LEGO_BIG_HEIGHT, -half_interval * LEGO_GRID )
GL.glVertex3f( half_interval * LEGO_GRID, level * LEGO_BIG_HEIGHT, i * LEGO_GRID )
GL.glVertex3f( -half_interval * LEGO_GRID, level * LEGO_BIG_HEIGHT, i * LEGO_GRID )
GL.glEnd()
GL.glLineWidth(ls)
GL.glEnable(GL.GL_LIGHTING)
def _caped_cylinder( radius, height, segments ):
global __quadratic, __legocaptex
GL.glPushMatrix()
GL.glRotatef(-90, 1.0, 0.0, 0.0)
GL.glTranslatef(0.0, 0.0, -height/2.0)
#GLU.gluQuadricOrientation(__quadratic, GLU.GLU_INSIDE)
#gluDisk(__quadratic,0,radius,segments,1)
#GLU.gluQuadricOrientation(__quadratic, GLU.GLU_OUTSIDE)
GLU.gluCylinder( __quadratic, radius, radius, height, segments, 1 )
GL.glTranslatef( 0.0, 0.0, height )
GL.glBindTexture( GL.GL_TEXTURE_2D, __legocaptex )
GLU.gluDisk( __quadratic, 0, radius, segments,1 )
GL.glBindTexture( GL.GL_TEXTURE_2D, 0 )
GL.glPopMatrix()
def _five_face_box( width, height, depth, color ):
half_width = width/2.0
half_height = height/2.0
half_depth = depth/2.0
GL.glBindTexture( GL.GL_TEXTURE_2D, 0 )
GL.glColor3fv( color )
GL.glNormal3f( 0.0, 0.0, 1.0 )
GL.glBegin( GL.GL_QUADS )
# Front Face
GL.glTexCoord2f(0.0, 1.0); GL.glVertex3f( -half_width, -half_height, half_depth )
GL.glTexCoord2f(1.0, 1.0); GL.glVertex3f( half_width, -half_height, half_depth )
GL.glTexCoord2f(1.0, 0.0); GL.glVertex3f( half_width, half_height, half_depth )
GL.glTexCoord2f(0.0, 0.0); GL.glVertex3f( -half_width, half_height, half_depth )
GL.glEnd()
# TODO: add texcoordinates to other faces (for bump map)
GL.glNormal3f( 0.0, 0.0, -1.0 )
GL.glBegin( GL.GL_QUADS )
# Back Face
GL.glVertex3f( half_width, -half_height, -half_depth )
GL.glVertex3f( -half_width, -half_height, -half_depth )
GL.glVertex3f( -half_width, half_height, -half_depth )
GL.glVertex3f( half_width, half_height, -half_depth )
GL.glEnd()
GL.glNormal3f( 1.0, 0.0, 0.0 )
GL.glBegin( GL.GL_QUADS )
# Right face
GL.glVertex3f( half_width, -half_height, half_depth )
GL.glVertex3f( half_width, -half_height, -half_depth )
GL.glVertex3f( half_width, half_height, -half_depth )
GL.glVertex3f( half_width, half_height, half_depth )
GL.glEnd()
GL.glNormal3f( -1.0, 0.0, 0.0 )
GL.glBegin( GL.GL_QUADS )
# Left Face
GL.glVertex3f( -half_width, -half_height, -half_depth )
GL.glVertex3f( -half_width, -half_height, half_depth )
GL.glVertex3f( -half_width, half_height, half_depth )
GL.glVertex3f( -half_width, half_height, -half_depth )
GL.glEnd()
GL.glNormal3f(0.0, 1.0, 0.0)
GL.glBegin(GL.GL_QUADS)
# Top Face
GL.glVertex3f( -half_width, half_height, -half_depth )
GL.glVertex3f( -half_width, half_height, half_depth )
GL.glVertex3f( half_width, half_height, half_depth )
GL.glVertex3f( half_width, half_height, -half_depth )
GL.glEnd()
#GL.glNormal3f(0.0, -1.0, 0.0)
#GL.glBegin(GL.GL_QUADS)
#
## Bottom Face
#GL.glVertex3f( -half_width, -half_height, -half_depth )
#GL.glVertex3f( half_width, -half_height, -half_depth )
#GL.glVertex3f( half_width, -half_height, half_depth )
#GL.glVertex3f( -half_width, -half_height, half_depth )
#
#GL.glEnd()
def draw_lego_brick( width, length, height, color ):
grid = LEGO_GRID
grid_width = width*grid
grid_depth = length*grid
grid_height = LEGO_BIG_HEIGHT if height else LEGO_SMALL_HEIGHT
_five_face_box( grid_width, grid_height, grid_depth, color )
GL.glPushMatrix()
GL.glTranslatef( (grid-grid_width)/2.0, LEGO_BUMP_HEIGHT/2.0, (-grid-grid_depth)/2.0 )
for _i in range( 0, width ):
for _j in range( 0, length ):
GL.glTranslatef( 0.0, 0.0, grid )
_caped_cylinder( LEGO_BUMP_RADIUS, grid_height+LEGO_BUMP_HEIGHT, color, 32 )
GL.glTranslatef( 0.0, 0.0, -length*grid )
GL.glTranslatef( grid, 0.0, 0.0 )
GL.glPopMatrix()