def to_matrix(self): point_matrix = matrix.zeros_matrix(1,4) point_matrix[0,0] = self.x point_matrix[1,0] = self.y point_matrix[2,0] = self.z point_matrix[3,0] = 1.0 return point_matrix
def points_to_pixel_map_old(points, lower_bound_x, lower_bound_y, upper_bound_x, upper_bound_y): #Allocate a blank 2d matrix to serve as the pixel map #Pixel map is sized according to view window #Columns = X size, Rows = Y size xdim = upper_bound_x-lower_bound_x+1 ydim = upper_bound_y-lower_bound_y+1 pixel_map = matrix.zeros_matrix(xdim,ydim) #Loop over each point for point in points: #World world_x = point.x world_y = point.y #Pixel map pixel_x = int( world_x - lower_bound_x ) - 1 pixel_y = int( upper_bound_y - world_y ) - 1 #Cheap check...bleh if(pixel_x < 0): pixel_x = 0 if(pixel_y < 0): pixel_y = 0 #Write something... a 1? pixel_map[pixel_y,pixel_x] = 1.0 return pixel_map
def points_to_pixel_map_old(points, xdim, ydim): #Allocate a blank 2d matrix to serve as the pixel map #Pixel map is sized according to given image size #Columns = X size, Rows = Y size pixel_map = matrix.zeros_matrix(xdim,ydim) #Init matrix to xpm background color rows,columns = pixel_map.shape width = columns; height = rows; for row in range(0,height): #Y for col in range(0,width): #X pixel_map[row,col] = xpm.BACKGROUND_FP_VAL #Loop over each point for point in points: #World world_x = point.x world_y = point.y #Pixel map lower_bound_x = 0 #Always zero? upper_bound_y = ydim-1 pixel_x = int( world_x - lower_bound_x ) - 1 pixel_y = int( upper_bound_y - world_y ) - 1 #Cheap check...bleh if(pixel_x < 0): pixel_x = 0 if(pixel_y < 0): pixel_y = 0 #Write something... a 1? pixel_map[pixel_y,pixel_x] = xpm.W_OFFSET return pixel_map
def points_to_pixel_map(points, xdim, ydim): #Allocate a blank 2d matrix to serve as the pixel map #Pixel map is sized according to given image size #Columns = X size, Rows = Y size pixel_map = matrix.zeros_matrix(xdim,ydim) #Loop over each point for point in points: #World world_x = point.x world_y = point.y #Pixel map lower_bound_x = 0 #Always zero? upper_bound_y = ydim-1 pixel_x = int( world_x - lower_bound_x ) - 1 pixel_y = int( upper_bound_y - world_y ) - 1 #Cheap check...bleh if(pixel_x < 0): pixel_x = 0 if(pixel_y < 0): pixel_y = 0 #Write something... a 1? pixel_map[pixel_y,pixel_x] = 1.0 return pixel_map
def geometric_objects_to_pixel_map(geometric_object_index_to_points,geometric_objects, xdim, ydim, front_clip_value): #Try to copy code from slides #Allocate the frame and z buffers F = matrix.zeros_matrix(xdim,ydim) Z = matrix.zeros_matrix(xdim,ydim) #Fill in background and -1 for Z rows,columns = F.shape width = columns; height = rows; for row in range(0,height): #Y - row for col in range(0,width): #X - col F[row,col] = xpm.BACKGROUND_FP_VAL Z[row,col] = -1.0 #~ #Get min and max z values #~ minz = 999 #~ maxz = -999 #~ for idx in geometric_object_index_to_points: #~ poly = geometric_objects[idx] #~ points = geometric_object_index_to_points[idx] #~ #For each point in poly projection #~ for point in points: #~ pz = poly.get_z_at_xy(point.x,point.y) #~ #~ if pz < minz and pz >= -1.0: #~ minz = pz #~ if pz > maxz and pz <= 1.0: #~ maxz = pz #~ #~ print "minz",minz #~ print "maxz",maxz #For each poly for idx in geometric_object_index_to_points: poly = geometric_objects[idx] points = geometric_object_index_to_points[idx] #For each point in poly projection for point in points: #World coords world_x = point.x world_y = point.y #Pixel map coords lower_bound_x = 0 #Always zero? upper_bound_y = ydim-1 pixel_x = int( world_x - lower_bound_x ) - 1 pixel_y = int( upper_bound_y - world_y ) - 1 #Cheap check if(pixel_x < 0): pixel_x = 0 if(pixel_y < 0): pixel_y = 0 #Address as [pixel_y,pixel_x] #Ask poly for z val at this pixels xy pz = poly.get_z_at_xy(point.x,point.y) if (pz < front_clip_value) and (pz > Z[pixel_y,pixel_x]): Z[pixel_y,pixel_x] = pz F[pixel_y,pixel_x] = poly.get_xpm_fp_color_at_xy(point.x,point.y) #Return frame buffer (pixel map) return F
