TopWare 18: Liquid/Image.iso/liquid/top1026/flash.exe/LESSN006.MSG

Text File | 1993-08-31 | 11.7 KB | 281 lines

THIS TUTORIAL DESCRIBES THE HOW THE DRAWING IN TUTORIAL 001
WAS GENERATED IN MORE DETAIL.
<end>
LET US BEGIN WITH A GRID OF 2.0 UNITS (METERS IN THIS CASE)
SQUARE 20.0 UNITS WIDE AND 24.0 UNITS DEEP.
PAY CLOSE ATTENTION TO THE ABOVE DISTANCES TYPED ONTO THE
DATA LINE DIRECTLY BELOW THE STATUS LINE AS HORIZONTAL
AND VERTICAL DIMENSIONS.
<end>
SINCE WE ARE CREATING A 3 DIMENSIONAL DRAWING LET US SELECT
THE FUNCTION 3D BLOCKS.
<end>
WE SHALL ASSIGN TO THE BLUE GRID THE "XY" OPTION MAKING
IT A PLANE. THE GRID IS NOT GOING TO HAVE A THICKNESS
NOR IS IT MADE FROM A SERIES OF CLOSED POLYGONS. THE GRID
IS MADE FROM A SERIES OF INTERSECTING LINES.  LET US
TURN OFF THE EXTRUSION ATTRIBUTE TO ELIMINATE 3D THICKNESS.
<end>
NOTICE THAT THE ATTRIBUTE "TRANS" AS IN TRANSPARENT WAS
ASSIGNED TO THE GRID  BECAUSE THE GRID IS NOT MADE FROM A
SERIES OF CLOSED POLYGONS.  ONLY CLOSED POLYGONS MAY BE NON-
TRANSPARENT.  THIS IS IMPORTANT FOR THE HIDDEN LINE REMOVAL.
BEFORE COMPLETELY CONTAINING THE GRID IN A WINDOW CHECK TO
BE SURE THAT THE ZAXIS VALUE OF THE GRID IS ZERO.
<end>
KEY "5" HAS BEEN PRESSED AND WE ARE IN THE GROUPS AREA (NOTE
THE CURSORS SHAPE).  TO SEE A PERSPECTIVE OF THE 3D GRID WE
MUST FIRST CREATE A "VIEW POINT" (OR A CAMERA).
THE VIEW POINT IS CREATED USING THE FUNCTION VIEW POINT.
A VIEW POINT HAS A HEIGHT AND A VERTICAL ANGLE OF ROTATION
EQUIVALENT TO LOOKING UP OR DOWN.
<end>
THE CYAN VIEW POINT WAS CREATED WITH A HEIGHT OF 1.5 METERS
AND A VERTICAL ANGLE OF ZERO. (CYAN IS THE DEFAULT COLOR).
THEREFORE THE OBSERVER LOOKS AT THE MODEL FROM THE HEIGHT
OF 1.5 METERS AND THE HEAD OF THE OBSERVER IS NOT ROTATED
UP OR DOWN AND IS THUS LOOKING STRAIGHT AHEAD.
PRESSING "F2" CREATES A PERSPECTIVE VIEW.
<end>
PRESSING "6" CHANGES THE DISPLAY FROM PERSPECTIVE BACK
TO THE PLAN VIEW.
<end>
LET US NOW MOVE THE VIEW POINT.

USING SINGLE MOVE THE VIEW POINT CAN BE SELECTED, PICKED UP
THEN USING THE + AND - KEYS THE VIEW POINT MAY BE ROTATED.
<end>
ANY ANGLE OF ROTATION CAN BE ENTERED INTO THE SYSTEM VIA THE
SUBMENU FUNCTION "ROTAT" BELOW.
LET US PLACE THE VIEW POINT AND GENERATE A 3D PERSPECTIVE
VIEW BY PRESSING "F2".  THIS IS FOLLOWED BY A SERIES OF
OTHER VIEWS OF THE PERSPECTIVE GRID GENERATED AS A RESULT OF
MOVEMENT OF THE VIEW POINT.
<end>
LET US GO BACK TO THE CONSTRUCTION AREA (BY PRESSING "5")
TO DRAW WALLS IN YELLOW WITH A THICKNESS OF 30 CENTIMETERS.
<end>
HERE IS THE WALL.  NOW LET US ASSIGN SOME 3D ATTRIBUTES.
FIRST ASSIGN A HEIGHT OF 4.0 METERS (NOTE THAT THE HEIGHT
IS CURRENTLY 2.5 METERS ON THE DATA LINE, ABOVE RIGHT).
THE Z AXIS VALUE IS CURRENTLY AT 0.0 LET US LEAVE IT AS IS.
<end>
LET US TAKE A LOOK AT OUR 3D MODEL WITH "F2".
KEY "6" SWITCHES THE DISPLAY BACK TO THE PLAN (WORK SCREEN).
<end>
NOW LET US COPY THIS WALL MIRRORING IT ABOUT THE
VERTICAL AXIS USING THE SINGLE COPY FUNCTION AND VIEW
THE RESULTS.
FOLLOWING THAT WE SHALL DESIGN NEW WALLS.
<end>
HERE IS A NEW WALL.  LET US USE THE 3D BLOCKS FUNCTION TO
ASSIGN 3D ATTRIBUTES TO THE WALL.
<end>
LET US EXTRUDE THIS WALL 1.0 METER AT ZAXIS OF ZERO (THIS
MEANS THE BASE OF THIS NEW WALL WILL BE AT GROUND ZERO.
NOW SELECT THE OPTION "XY" TO CLOSE THE BOTTOM AND "XY @Z"
TO PUT A CAP ON THE THICKNESS OF THE WALL.
<end>
LET US MOVE THE VIEW POINT CLOSER USING SINGLE MOVE THEN
PRESS "F2" TO SEE THE PERSPECTIVE.
AS USUAL KEY "6" DISPLAYS THE PLAN (WORK SCREEN).
<end>
LET US COPY THE NEW WALL ON TO ITSELF IN PLAN VIEW THEN
CHANGE THE 3D ATTRIBUTES OF THE NEW COPY SUCH THAT THE
BOTTOM OF THIS COPY STARTS 3.0 METERS ABOVE GROUND LEVEL &
THE HEIGHT OF THE WALL REMAINS 1.0 METER.
ANY MODIFICATIONS TO AN EXISTING 3D GROUP IS DONE IN THE
GROUPS AREA USING THE FUNCTION "3D EDITING".
<end>
THIS IS THE "3D EDITING" FUNCTION. IT'S SUBMENU IS IDENTICAL
TO THE "3D BLOCKS" FUNCTION OF THE CONSTRUCTION AREA WITH
WHICH THE GROUPS WERE ORIGINALLY CREATED.  LET US SELECT THE
WALL AND CHANGE IT'S 3D ATTRIBUTES.
<end>
NOTICE THAT THE ATTRIBUTES OF THIS WALL ARE INDICATED BOTH
IN THE SUBMENU AND ON THE DATA LINE.  ON THE DATA LINE, THE
ZAXIS IS 0.0 AND THE HEIGHT IS 1.0. THE SUBMENU SHOWS
THAT THIS GROUP HAS A CAP ON TOP (XY@Z) A CAP ON THE BOTTOM
(XY) AND IS EXTRUDED (EXTRU).  ALSO THE CENTER IS MARKED BY
A PAIR OF ARROWS.  NOW CHANGE THE ZAXIS VALUE TO 3.0 METERS.
<end>
NOW WE SHALL DRAW SOME OTHER FEATURES OF THIS MODEL WITH
THE FUNCTIONS DISCUSSED EARLIER.
FOR EXAMPLE A RED SQUARE BAR THAT STARTS AT 1.0 METER ABOVE
GROUND AND ENDS AT 3.0 METERS ABOVE GROUND.  SINCE THIS BAR
IS SANDWICHED BETWEEN THE TWO EXISTING YELLOW WALLS ABOVE &
BELOW IT, THE BAR DOES NOT NEED CAPS IT'S ENDS.
<end>
HERE IS HOW TO CORRECT A MISPLACED BAR.  IT IS SIMPLY MOVED.
USE THE SINGLE MOVE ("MOVE SNG") FUNCTION THEN LET US PRESS
"F2" AND LOOK AT THE MODEL.
<end>
LET US MAKE 4 COPIES OF THE WALLS AND BARS USING RADIAL COPY
SELECTED FROM THE MAIN MENU OF THE GROUPS AREA.
<end>
THE GROUPS ARE IN A WINDOW. THE OPTION "QTY" (QUANTITY) IS
SET TO 4.  THE SYSTEM AUTOMATICALLY DIVIDES THE 360 DEGREES
INTO 4, 90 DEGREE SECTIONS FOR EACH ROTATED COPY. IDENTIFY
THE CENTER OF ROTATION AS THE POINT BY WHICH THE COPIES ARE
PICKED UP. SELECT SAME POINT AGAIN AS THE POINT AT WHICH ALL
COPIES ARE PLACED.  PRESS "F2" TO SEE THE RESULTS.
<end>
LET'S MOVE THE VIEW POINT HIGHER AND ROTATE DOWN A LITTLE.
TO CHANGE THE ATTRIBUTES OF THE VIEW POINT SELECT THE
FUNCTION "VIEW POINT" AND OPTION HEIGHT THEN ENTER 8.0
METERS. THEN SELECT OPTION ANGLE AND ENTER -30 DEGREES.
PRESS "F2" TO SEE THE RESULTS.
<end>
THE VIEW POINT WAS MOVED TO A BETTER LOCATION NOW USING
"ALT+F2" LET'S REMOVE THE HIDDEN LINES.
AS USUAL KEY "6" REDISPLAYS THE PLAN (WORK SCREEN).
<end>
THE HIDDEN PERSPECTIVE JUST CREATED WITH ITS HIDDEN LINES
REMOVED IS NOW ON TABLE 2 OF THE SYSTEM.  WE SHALL DISCUSS
THIS LATER.
<end>
NOW LET US CREATE A CEILING PATTERN 4.0 METERS ABOVE GROUND
(HEIGHT OF THE WALLS) AND EXAMINE SOME INTERESTING ISSUES.
THE CEILING IS DRAWN IN CYAN MADE FROM RECTANGLES AND LINES.
<end>
LET US USE THE SAME TECHNIQUE USING RADIAL COPY AND CREATE
4 COPIES OF THE CYAN CEILING PATTERN.
THEN ADD SOME MORE RECTANGLES AT THE CENTER OF THE PATTERN.
PURPOSELY MISTAKES ARE MADE AND CORRECTED. THIS IS TO SHOW
YOU HOW EASY IT IS TO CORRECT MISTAKES.
WATCH FOR THE RADIAL COPIES INCORRECTLY CENTERED FIRST.
<end>
NOW LET US CREATE A 3D GROUP WITH A HEIGHT ("EXTRU") OF
20.0 CENTIMETERS 4.0 METERS ABOVE GROUND WITH CAPS ON TOP
AND ON THE BOTTOM.
<end>
REMOVE THE HIDDEN LINES USING "ALT+F2".
<end>
EACH TIME THAT A HIDDEN LINE REMOVAL FUNCTION IS PERFORMED
A COPY OF THE PERSPECTIVE IS PLACE ON THE PASSIVE TABLE.
ON THE STATUS LINE NOTICE THE BUTTON "TV01" INDICATES THE
CURRENT TABLE (OR TV).  SELECT THIS OPTION OR PRESS "/" TO
SWITCH TO TV02 NOTE THE CHANGE ON THE STATUS LINE.
<end>
WE ARE NOW LOOKING AT THE PERSPECTIVE ON TABLE 002.
THIS IS A PERSPECTIVE SNAP SHOT OF THE MODEL ON TABLE 001.
IT IS A 2 DIMENSIONAL DRAWING FULLY EDITABLE IN EVERY WAY.
<end>
NOTICE HOW THE SIMPLE RECTANGLES AND THE OUTLINE OF THE
CEILING WERE INTERPRETED AS A SERIES OF CEILING BRACES.
<end>
AS YOU CAN SEE THE CEILING PATTERN IS 20.0 CENTIMETERS
HIGHER THAN THE TOP OF THE 4.0 METER WALLS.
TO CORRECT THIS PROBLEM THE ZAXIS (THE BOTTOM OF THE CEILING)
MUST BE LOWERED 20.0 CENTIMETERS FROM 4.0 TO 3.8 METERS.
LET US USE THE 3D EDITING FUNCTION AND CORRECT THIS.
BUT FIRST RETURN TO TABLE 001.
<end>
NOW LET US DRAW A ROOF USING A GREEN RECTANGLE WHOSE CORNERS
ARE CUT AND MODIFIED.  THIS IS FOLLOWED BY STRETCHING THE
FRONT PORTION OF THE ROOF DOWN. THIS ROOF IS THEN MADE INTO
A 3D GROUP AT ZAXIS OF 4.0 METERS. A HEIGHT OF  0.2 METERS
(THICKNESS) IS ASSIGNED TO IT.
PAY CLOSE ATTENTION TO EVERY MOVEMENT OF THE CURSOR.
<end>
TO DRAW A COLUMN TO SUPPORT THE ROOF, IT IS NECESSARY TO
DRAW THE PLAN AND THE SECTION OF THE COLUMN AND A 3D COLUMN
IS AUTOMATICALLY GENERATED.  LET US DRAW A YELLOW SQUARE
INDICATING THE PLAN VIEW OF A COLUMN FOLLOWED BY A MAGENTA
SECTION OF THE COLUMN. THEN SELECT THE 3D BLOCKS FUNCTION TO
DEMONSTRATE ONE OF THE MOST POWERFUL 3D FEATURES.
<end>
THE OPTION "PROFI" (PROFILE) HAS BEEN SELECTED.  WITH THIS
OPTION THE ELEMENTS DRAWN IN THE COLOR MAGENTA REPRESENT
THE VERTICAL SECTION OF THE RECTANGLE. THE YELLOW RECTANGLE
COULD BE DRAWN WITH ANY COLOR BUT MAGENTA, REPRESENTING THE
PLAN OF THE COLUMN.
NOW LET US DRAW A WINDOW AROUND THE PLAN AND SECTION.
<end>
NOW SELECT A POINT ON THE MAGENTA SECTION INDICATING WHERE
ALONG THE MAGENTA SECTION THE YELLOW SECTION (PLAN) OCCURS.
<end>
NOW LET US SEE WHAT THE PERSPECTIVE LOOKS LIKE WITH ITS
HIDDEN LINES REMOVED. PRESS "ALT+F2".
<end>
THIS IS A VERY POWERFUL AND IMPORTANT FUNCTION OF THE 3D
MODELER.  FOR MORE INFORMATION STUDY THE TUTORIAL NUMBER
10 ON CREATING AND MODIFYING 3D MODELS.

LET US MAKE TWO COPIES OF THE COLUMN USING THE SINGLE COPY
SELECTED FUNCTION FROM THE QUICK MENU.
<end>
NOW LET US SEE SOME OTHER APPLICATIONS OF THE SUBMENU OPTION
"PROFI" (PROFILE) BY DESIGNING THE SEATING ARRANGEMENTS IN
RED FOR THE SEATS WHILE THE SECTION IS DRAWN IN MAGENTA.
BUT FIRST LET US TURN OFF THE COLOR CYAN FOR THE SAKE OF
CONVENIENCE.  PAY ATTENTION TO THE USE OF THE "OFFSET"
FUNCTION THAT FOLLOWS.
<end>
NOW DRAW THE VERTICAL SECTION OF A TYPICAL SEAT TO BE
ASSIGNED TO THE RED LINES.

THE VERTICAL SECTION IS DRAWN IN MAGENTA.
<end>
SELECT A POINT ON THE MAGENTA SECTION THAT CORRESPONDS
TO THE RED PLAN VIEW OF THE SEATS.  IN THIS CASE THE LOWER
LEFT CORNER OF THE MAGENTA SECTION IS THE POINT THAT
CORRESPONDS TO THE RED LINES (THIS POINT IS AT THE GROUND
LEVEL).
<end>
PRESS "ALT+F2" TO REMOVE THE HIDDEN LINES.
IMPORTANT: PAY ATTENTION TO THE UNEXPLAINED STEPS
THAT IMMEDIATELY FOLLOW THE HIDDEN LINE REMOVAL PROCESS.
SEE IF YOU CAN ACTUALLY FOLLOW EVERY STEP OF THE CURSOR
AND UNDERSTAND WHAT IS BEING COMMUNICATED TO THE SOFTWARE
THROUGH BOTH THE FUNCTIONS, AND THE DATA LINE ABOVE.
<end>
IF A COLOR IS TURNED OFF, THE ELEMENTS OF THAT COLOR ARE
NOT VISIBLE IN THE 3D MODEL. OBSERVE AS COLORS GREEN THEN
RED ARE TURNED OFF THEN A HIDDEN LINE VIEW IS GENERATED.
VARIOUS OTHER COMBINATION OF COLORS ARE EXPERIMENTED WITH.
THE VIEW POINT (CYAN) IS NOT EFFECTED BY TURNING OFF THE
COLOR CYAN.
<end>
TO DRAW A SLOPED ROOF ON TOP OF THE GREEN FLAT ROOF THE
OPTION "SLOPE" OF THE "3D BLOCKS" FUNCTION IS USED.

FIRST LET US DRAW THE BASE OF THIS SLOPING ROOF.
<end>
THE SLOPE LINES OF THE ROOF MUST BE DRAWN IN MAGENTA.
<end>
LET US CREATE A 3D BLOCK USING THE "SLOPE" OPTION WHOSE
BASE IS AT ZAXIS=4.2 METERS (THE HEIGHT AT THE TOP OF THE
GREEN FLAT ROOF) WHERE THE HEIGHT=2.5 METERS (TOP OF THE
SLOPE).  WATCH CLOSELY AS VARIOUS STEPS ARE TAKEN TO
COMMUNICATE THESE PARAMETERS TO THE SOFTWARE.
<end>
TO SEE BETTER LET US REMOVE THE HIDDEN LINES.
<end>
HERE IS ANOTHER WAY TO USE THE "SLOPE" OPTION OF THE
"3D BLOCKS".

FIRST TRANSFER THE GROUP BACK TO THE CONSTRUCTION AREA AND
ERASE THE MAGENTA SLOPE LINES.
<end>
USING THE "PROJECTIONS" FUNCTION A SMALLER COPY OF THE
GREEN OUTLINE IS PROJECTED INWARD.  THE REDUCTION IS DONE
USING THE OPTION "SCALE".  WHERE THE X & Y VALUES ARE SET
TO 0.2 (REDUCED TO 20% OF THE ORIGINAL SIZE).
<end>
USING MODIFY COLORS CHANGE THE COLOR OF THE SLOPE LINES TO
MAGENTA, WITH PARTIALLY CONTAINED (CROSSING) WINDOW.
<end>
NOW LET US MAKE A NEW 3D GROUP WITH THE SAME PARAMETERS AS
THE FIRST SLOPING ROOF.  NOTICE THAT THOSE VALUES ARE
RETAINED BY IN THE SYSTEM. THERE IS NO NEED TO REENTER THEM.
<end>
THE SLOPING LINES OF THE FIRST ROOF CAME TO A POINT.

LET US SELECT OPTION "XY @Z" WHICH PLACES A HORIZONTAL (XY)
PLANE 2.5 METERS ABOVE THE BASE OF THE SLOPING ROOF.
THEN LET US LOOK AT THE MODEL WITH ITS HIDDEN LINES REMOVED
<end>
END OF TUTORIAL 006.
<end>