Application Note
AN_285
FT800 Demo Application - Logo
Animation
Version 1.0
Issue Date: 2014-03-17
This document is to introduce the Logos Demo Application running on both
MSVC and Arduino. The objective of the Demo Application is to enable users
to become familiar with the usage of the FT800, the design flow, and display
list used to design the desired user interface or visual effect.
Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold FTDI harmless from any and all damages, claims, suits
or expense resulting from such use.
Future Technology Devices International Limited (FTDI)
Unit 1, 2 Seaward Place, Glasgow G41 1HH, United Kingdom
Tel.: +44 (0) 141 429 2777 Fax: + 44 (0) 141 429 2758
Web Site: http://ftdichip.com
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Application Note
AN_285 FT800 Demo Application - Logo Animation
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Clearance No.: FTDI#378
Table of Contents
1
2
3
4
Introduction .................................................................................................................................... 3
1.1
Overview ................................................................................................................................. 3
1.2
Scope ....................................................................................................................................... 3
Application Flow.............................................................................................................................. 4
2.1
Near and Far Menu Icon Processing ....................................................................................... 5
2.2
Icon Placement and Rotation .................................................................................................. 6
Interpolation ................................................................................................................................... 7
3.1
Linear Interpolation ................................................................................................................ 7
3.2
Smootstep Interpolation ......................................................................................................... 7
3.3
Acceleration Interpolation ...................................................................................................... 7
3.4
Deceleration Interpolation...................................................................................................... 8
Logos ............................................................................................................................................... 9
4.1
4.1.1
Flowchart ........................................................................................................................ 9
4.1.2
Description .................................................................................................................... 10
4.2
Logo-2 ................................................................................................................................... 12
4.2.1
Flowchart ...................................................................................................................... 12
4.2.2
Description .................................................................................................................... 13
4.3
Logo-3 ................................................................................................................................... 14
4.3.1
Flowchart ...................................................................................................................... 14
4.3.2
Description .................................................................................................................... 15
4.4
Logo-4 ................................................................................................................................... 17
4.4.1
Flowchart ...................................................................................................................... 17
4.4.2
Description .................................................................................................................... 18
4.5
5
Logo-1 ..................................................................................................................................... 9
Logo-5 ................................................................................................................................... 19
4.5.1
Flowchart ...................................................................................................................... 19
4.5.2
Description .................................................................................................................... 20
Contact Information...................................................................................................................... 22
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Application Note
AN_285 FT800 Demo Application - Logo Animation
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Document Reference No.: FT_000948
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Clearance No.: FTDI#378
Appendix A – References ...................................................................................................................... 23
Document References....................................................................................................................... 23
Acronyms and Abbreviations ............................................................................................................ 23
Appendix B – List of Figures .................................................................................................................. 24
Appendix C – Revision History .............................................................................................................. 25
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AN_285 FT800 Demo Application - Logo Animation
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1 Introduction
This application demonstrates an Interactive Selection menu, Logo Animations using Bitmaps,
Bitmap Transform and Alpha-Blend Function based on FT800 platform.
1.1 Overview
The application will be useful to understand how to make a Start-Up Logo Animation with effective
frame rate.
The logo animations are constructed by using bitmaps and bitmap transform. All of the logo
animations covered on this application note are quite simple to do based on the FT800 platform.
The developer should concentrate on the math functions sine and cosine. These functions
consume more time on the Arduino platform. For example in Logo-4 the bar graph FT800 graphics
primitive is used for animation. When constructing the graph during run time, the frame rate will
decrease, so the developer should avoid this type of situation.
For information on Project file, Source code build kindly follow the FT_App_Logos Application Notes
with respect to PLATFORM.
Note: For Arduino platform all the files, please copy the files from TEST folder.
1.2 Scope
This document will be used by software programmers to develop GUI applications by using FT800
with any MCU via SPI.
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2 Application Flow
Figure 2.1 Logo Animation Flowchart
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Used widgets:
1. Bitmaps
2. Bitmap transform
All menu icons are bitmaps in L8 format with reflection; the reflection of the icon is made
externally not using the FT800.
The menu icons each have a different Tag number using the TAG primitive. The menu icons are
placed in ellipse format. There are five logos to select in the elliptical path.
Angle difference between two icons ∆a = 360/5 = 72˚
Ellipse.
X = xoffset + acosθ; y = yoffset + bsinθ;
where a and b is the radius of major and minor axis respectively.
2.1 Near and Far Menu Icon Processing
Figure 2.2 Near and Far Icons
The Background of the selection menu is constructed using bitmaps and clear colour calls based on
the FT800 platform.
For the purpose of 3d effects, the menu icons which appear far away compared to the near icons
were reduced in size based on the distance in Y-axis.
For example in a WQVGA 480x272 display, the 272nd pixel in the Y-axis is closer to the user and
the 0th pixel is further from the user. By using the BITMAP_TRANSFROM_A and
BITMAP_TRANSFROM_E the image size can be adjusted. For more details about BITMAP
TRANSFORM, please refer the FT800 programming guide.
The Image size is reduced from 100% to 73.1% for the far and increased from 100% to 210%.
ROTARY is implemented by using the register REG_TRACKER, the user can move the menu by
dragging a finger across the display in a rotary fashion. For more details about REG_TRACKER,
please refer the FT800 programming guide.
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2.2 Icon Placement and Rotation
The icons are placed by using ∆a.
In the function
for(ft_uint8_t x=1;x<6;x++)
{
ft_int16_t theta = (72*x);
/* x is the Menu number*/
theta +=(-trackval);
theta%=360;
ft_int16_t xoff = 200+(ft_int16_t)(170*cos(theta*0.0174));
/* 200 is Xoffset & 170 is radius*/
ft_int16_t yoff = 80-(ft_int16_t)(80*sin(theta*0.0174));
/* 80 is yoffset & 80 is radius*/
}
where x is the menu number,
if
x is 1
then theta is 72 ˚, ……….. and when x is 5 then theta is 360 ˚.
where trackval is the rotary value of the TRACK. The register REG_TRACKER gives the 16 bit
tracked value. The lower 8 bit of the register is the current tag.
In the function
ft_uint32_t sy = Ft_Gpu_Hal_Rd32(phost,REG_TRACKER);
ft_uint8_t key_detected = sy&0xff;
REG_TRACKER gives a 16-bit tracked value (0 to 65536) and a current tag, if there is touch
detected, otherwise it gives zero.
In the function the variable key_detected holds the 8-bit tag value.
In the application, if the touch is not detected after the 100 iterations, the menu icons
automatically start to rotate by adjusting the trackval manually by 1 ˚.
If the menu icons are moving, for the first touch it stops moving and waits for 100 iterations. If
there is no user touch detected, it starts to move again.
If any of the valid menu tags are detected, the corresponding logo animation will execute. The
selected logo animation is repeated until another touch is detected.
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3 Interpolation
Interpolation concepts are implemented in this application for the object movement or image zoom
in and zoom out from one point to another.
1.
2.
3.
4.
Linear Interpolation
Smooth step Interpolation
Acceleration and
Deceleration interpolations
An interpolation function defines how a variable changes between two values (e.g. starting and
ending position of an object) with respect to time.
3.1 Linear Interpolation
3.1
Linear interpolation
The simplest real interpolation function is Linear interpolation, also known as Lerp. It transits from
one value to another at a constant rate, using a straightforward and intuitive formula.
Linear(p0,p1,t,r) = p0 + ((t/r)*(p1-p0));
float linear(float p1,float p2,ft_uint16_t t,ft_uint16_t rate)
{
float st = (float)t/rate;
return p1+(st*(p2-p1));
}
3.2 Smootstep Interpolation
Either Cosine or SmoothStep interpolation can replace almost all Linear interpolation for a
smoother, more polished result.
SmoothStep(p0,p1,t,r) = Linear(p0,p1,((t/r)^2)*(3-2(t/r));
ft_int16_t smoothstep(ft_int16_t p1,ft_int16_t p2,ft_uint16_t t,ft_uint16_t rate)
{
float dst = (float)t/rate;
float st = SQ(dst)*(3-2*dst);
return p1+(st*(p2-p1));
}
3.3 Acceleration Interpolation
The object moving speed from one point to other is directly proportional to the third parameter
time(t).
Acceleration(p0,p1,t,r) = Linear(p0,p1,((t/r)^2));
ft_int16_t acceleration(ft_int16_t p1,ft_int16_t p2,ft_uint16_t t,ft_uint16_t rate)
{
float dst = (float)t/rate;
float st = SQ(dst);
return p1+(st*(p2-p1));
}
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3.4 Deceleration Interpolation
The object moving speed from one point to other is inversely proportional to the third parameter
time(t).
Deceleration(p0,p1,t,r) = Linear(p0,p1,(1-(1-t/r)^2));
float deceleration(ft_int16_t p1,ft_int16_t p2,ft_uint16_t t,ft_uint16_t rate)
{
float st,dst = (float)t/rate;
dst = 1-dst;
st = 1-SQ(dst);
return p1+(st*(p2-p1));
}
In all the logos animation, the third parameter time(t) is not actually a time, it’s an iteration that
counts.
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4 Logos
4.1 Logo-1
4.1.1 Flowchart
Figure 4.1 Logo-1 Flowchart
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4.1.2 Description
In this Logo, four bitmaps are used: ring, ftdi
ball, ftdi and chip
Figure 4.2: For the starting screen, there are
48 rings placed by using predefined
hypotenuse animation. All the 48 rings are
placed in pre-computed radius, sin and
cosine angle. From the pre-computed
hypotenuse and angle the (x,y) co-ordinates
are computing on the run time by using the
formula.
Figure 4.2 Logo-1 Animation 1
x = rcosθ and y = rsinθ where r is
the radius.
Figure 4.3 and Figure 4.4: After number of
iterations, the centre ring is zoomed in by
using bitmap transform A & E and the ring is
in the centre of the screen. The other rings
are moving out.
Image at the centre,
Figure 4.3 Logo-1 Animation 2
X = (FTDisplay_WidthImage_Width)/2;
Y = (FTDisplay_HeightImage_Height)/2;
All the rings are moved by increasing the
radius. After two beats, the rings will
disappear by reducing the bitmap size.
Figure 4.4 Logo-1 Animation 3
Figure 4.5 Logo-1 Animation 4
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Figure 4.6: Chip bitmap and ftdi ball bitmap
are rotated by 30 degree by using the coprocessor command CMD_ROTATE. For more
details please refer to the FT800
programming guide.
Figure 4.8: Gradually reducing the angle
from 30 to 0 degree and one degree per
iteration which zooms in both the bitmaps by
using bitmap transform
Figure 4.6 Logo-1 Animation 5
The FTDI bitmap moves from the 480th pixel
to 250th pixel by using SmoothStep
interpolation. If the FTDI bitmap comes to
the 250th pixel, then the FTDI bitmap shakes
for 30 iterations by 10pixels randomly which
moves on both x and y axis.
For more information about bitmap
transform, rotation refer FT800 programming
guide.
Figure 4.7 Logo-1 Animation 6
Figure 4.8 Logo-1 Animation 7
Figure 4.9 Logo-1 Animation 8
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4.2 Logo-2
4.2.1 Flowchart
Figure 4.10 Logo-2 Flowchart
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4.2.2 Description
The animation is based on space. The planet
moves from very far to earth and it blasts.
The blasted asteroids are moving away and
the FTDICHIP logo will appear on the screen.
This is the concept of the animation.
Figure 4.11: This is the starting screen of
the animation. The background is a
240x136pxs image and it is deflated by using
FTDI image converter utility.
Figure 4.11 Logo2 Animation 1
Figure 4.12 Logo-2 Animation 2
Figure 4.13 Logo-2 Animation 3
By using the co-processor command
CMD_INFLATE, the deflated image is inflated
in to GRAM. Note, the GRAM allocation for
the image should be the original size of the
image and it should not be the deflated file
size.
The stars and the background bitmaps are
different sizes. They can be in L8 or L4
format. The stars of different sizes are placed
based on FT800 bitmap transforms. The stars
are blinking randomly by changing the alpha
value of the colour, it should be 0 for
darkness and 255 for brightness. e.g.
COLOR_A( 0 or 255).
Figure 4.12: In this picture the planet is
moving from far to the earth based on
FT800.It is quite easy to do the transitions
and zooming in/out of the bitmaps. For e.g.
50x50 image is transformed 15 times smaller
to look as it is far away. Then gradually
increase the image size to normal size by
using the function linear interpolation based
on iterations.
Figure 4.13: In this picture the planet is
blasting and the asteroids move away from
each other. The FTDI ball bitmap comes from
the centre of the planet and the ball and the
tail move proportionally opposite to each
other by using interpolation. How does the
planet blast into asteroids? It’s simple to do.
The planet gives more brightness using alpha
and then the asteroids bitmap are placed
over the planet with a pre-defined radius
iteration. By increasing the radius of the orbit
the asteroids move away.
For more information about bitmap
transform, inflate; please refer the FT800
programming guide.
Figure 4.14 Logo-2 Animation 4
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4.3 Logo-3
4.3.1 Flowchart
Figure 4.15 Logo-3 Flowchart
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4.3.2 Description
Compared to the previous two logos, this
logo animation is relatively easy to do.
Mostly two interpolations are used acceleration and deceleration. Initially, a
bitmap appears and eventually the ftdi ball
bitmap appears as the bitmap zooms in.
Then the FTDICHIP bitmap appears which
hits the ftdi ball bitmap from right to left.
And the ball hits the wall and return back
from the tail of the ftdi logo. This is the
concept.
Figure 4.16 Logo-3 Animation 1
Figure 4.17 Logo-3 Animation 2
All the bitmaps, except the background are in
L8 format, the background is in RGB565, and
all images are deflated by using the FTDI
image converter utility. The bitmaps are
copied into GRAM by using Coprocessor
command CMD_INFLATE. Please refer to the
FT800 programming guide for these coprocessor commands.
Figure 4.16: The bitmap size is gradually
reduced to the centre of the screen and the
bitmaps disappear. The horizons of the
bitmap and the centre line will disappear
based on the ripples size and all are directly
proportional as see in Figure 4.17.
The two horizons come from the centre of
the ball and the height and width of the tail is
increased based on the travelled distance of
the tail.
By gradually reducing the color alpha value
from 255 to 0 for the wave and increasing
the color alpha value from 0 to 255 for the
FTDI ball, the lightings can be seen in Figure
4.18. After a few iterations, the lightings will
disappear and this can be seen in Figure
4.19.
Figure 4.18 Logo-3 Animation 3
The FTDICHIP bitmap hits the ball from right
to left by using deceleration interpolation.
The ball gets accelerated to move in the
same direction which is shown in Figure 4.20.
Finally the ball hits the left side of the wall
and returns back to align with the ftdi chip
bitmap.
Figure 4.19 Logo-3 Animation 4
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The background image moving is opposite to
the movement of the ball and FTDICHIP
bitmaps. The tail and ball are two different
bitmaps in L8 format.
Figure 4.20 Logo-3 Animation 6
Figure 4.21 Logo-3 Animation 7
Figure 4.22 Logo-3 Animation 8
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4.4 Logo-4
4.4.1 Flowchart
Figure 4.23 Logo-4 Flowchart
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4.4.2 Description
Bar graph logo animation is quite simple to
do based on the FT800 platform. This
animation mainly uses FT800 primitives such
as rectangle, scissor, bargraph and bitmap.
For more information please refer to the
FT800 programming guide.
Figure 4.24 Logo-4 Animation 1
Figure 4.24: The bargraph construction is
the main factor in this animation. By using
the sine wave, the graph is constructed but
not in run time of the animation. The time
consumption of the sine function affects the
frame rate.
The sine wave is plotted along the even
pixels and the odd pixels are the run time
offset of y-axis.
The bargraph data has already been
calculated during the first iteration of the
development.
By using the formula
Y = amp*qsin(-65536*x/(freq))
/65536)
Figure 4.25 Logo-4 Animation 2
Figure 4.25: The vertical and the horizontal
bar is a rectangle based on FT800 primitives.
The Vertical bar moves from left to right
based on the iterations. After few iterations,
the width, height and offset of the scissor
size and scissor size is reduced.
The logo animation has the background
music effect based on the FT800 internal
audio feature, please refer the FT800
programming guide.
Figure 4.26 Logo-4 Animation 3
Figure 4.27: FTDICHIP is a bitmap in L8
format; it will appear at the end of the music
effect.
The animation is fully based on iterations.
Figure 4.27 Logo-4 Animation 4
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4.5 Logo-5
4.5.1 Flowchart
Figure 4.28 Logo-5 Flowchart
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4.5.2 Description
In this logo animation, three balls are in
RGB565 format, headset, ft800 and eve are
in L8 format. In this logo animation all
movements are based on a sine wave. The
headset clipping movement is created from
continuous iterations of three different
bitmaps. It is quite simple to do based on the
FT800 platform.
Alpha blend functions are utilized in this logo
animation for balls.
Figure 4.29 Logo-4 Animation 1
This animation gives a 3-D effect, Figure
4.29 & Figure 4.30, the balls size are reduced
by using the bitmap transform and moved
from 512th pixel of x- axis and 0th pixel of yaxis. All the three balls movement based on
sine wave are in three different angles
90,180,270 degrees respectively.
In Figure 4.31, the headset arrives just
before the balls join together by using
SmoothStep interpolation.
Figure 4.30 Logo-4 Animation 2
Figure 4.31 Logo-4 Animation 3
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After the balls join, the three headset
bitmaps create an effect that the headset
adjusts itself, shown in Figure 4.32 and
Figure 4.33.
After these iterations, FT800 and EVE
bitmaps arrives from the right side of the
screen in a sine wave with 180 differences
and the size of the bitmap is gradually
increased based on the iterations.
Figure 4.32 Logo-5 Animation 4
Figure 4.33 Logo-5 Animation 5
Figure 4.34 Logo-5 Animation 6
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5 Contact Information
Head Office – Glasgow, UK
Branch Office – Tigard, Oregon, USA
Future Technology Devices International Limited
Unit 1, 2 Seaward Place, Centurion Business Park
Glasgow G41 1HH
United Kingdom
Tel: +44 (0) 141 429 2777
Fax: +44 (0) 141 429 2758
Future Technology Devices International Limited
(USA)
7130 SW Fir Loop
Tigard, OR 97223-8160
USA
Tel: +1 (503) 547 0988
Fax: +1 (503) 547 0987
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
[email protected]
[email protected]
[email protected]
E-Mail (Sales)
E-Mail (Support)
E-Mail (General Enquiries)
[email protected]
[email protected]
[email protected]
Branch Office – Taipei, Taiwan
Branch Office – Shanghai, China
Future Technology Devices International Limited
(Taiwan)
2F, No. 516, Sec. 1, NeiHu Road
Taipei 114
Taiwan , R.O.C.
Tel: +886 (0) 2 8791 3570
Fax: +886 (0) 2 8791 3576
Future Technology Devices International Limited
(China)
Room 1103, No. 666 West Huaihai Road,
Shanghai, 200052
China
Tel: +86 21 62351596
Fax: +86 21 62351595
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Web Site
http://ftdichip.com
System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology
Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level
performance requirements. All application-related information in this document (including application descriptions, suggested
FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this
information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications
assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from
such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is
implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product
described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent
of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,
Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640
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Appendix A – References
Document References
FT800 Embedded Video Engine Datasheet
FT800 programmer guide
Datasheet for VM800B
Datasheet for VM800C
Acronyms and Abbreviations
Terms
Arduino Pro
Description
The Open Source platform variety based on the Ateml ATMega chipset
EVE
Embedded Video Engine
SPI
Serial Peripheral Interface
UI
User Interface
USB
Universal Serial Bus
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Appendix B – List of Figures
Figure 2.1 Logo Animation Flowchart ..................................................................................... 4
Figure 2.2 Near and Far Icons .............................................................................................. 5
Figure 4.1 Logo-1 Flowchart ................................................................................................. 9
Figure 4.2 Logo-1 Animation 1 ............................................................................................ 10
Figure 4.3 Logo-1 Animation 2 ............................................................................................ 10
Figure 4.4 Logo-1 Animation 3 ............................................................................................ 10
Figure 4.5 Logo-1 Animation 4 ............................................................................................ 10
Figure 4.6 Logo-1 Animation 5 ............................................................................................ 11
Figure 4.7 Logo-1 Animation 6 ............................................................................................ 11
Figure 4.8 Logo-1 Animation 7 ............................................................................................ 11
Figure 4.9 Logo-1 Animation 8 ............................................................................................ 11
Figure 4.10 Logo-2 Flowchart ............................................................................................. 12
Figure 4.11 Logo2 Animation 1 ........................................................................................... 13
Figure 4.12 Logo-2 Animation 2 .......................................................................................... 13
Figure 4.13 Logo-2 Animation 3 .......................................................................................... 13
Figure 4.14 Logo-2 Animation 4 .......................................................................................... 13
Figure 4.15 Logo-3 Flowchart ............................................................................................. 14
Figure 4.16 Logo-3 Animation 1 .......................................................................................... 15
Figure 4.17 Logo-3 Animation 2 .......................................................................................... 15
Figure 4.18 Logo-3 Animation 3 .......................................................................................... 15
Figure 4.19 Logo-3 Animation 4 .......................................................................................... 15
Figure 4.20 Logo-3 Animation 6 .......................................................................................... 16
Figure 4.21 Logo-3 Animation 7 .......................................................................................... 16
Figure 4.22 Logo-3 Animation 8 .......................................................................................... 16
Figure 4.23 Logo-4 Flowchart ............................................................................................. 17
Figure 4.24 Logo-4 Animation 1 .......................................................................................... 18
Figure 4.25 Logo-4 Animation 2 .......................................................................................... 18
Figure 4.26 Logo-4 Animation 3 .......................................................................................... 18
Figure 4.27 Logo-4 Animation 4 .......................................................................................... 18
Figure 4.28 Logo-5 Flowchart ............................................................................................. 19
Figure 4.29 Logo-4 Animation 1 .......................................................................................... 20
Figure 4.30 Logo-4 Animation 2 .......................................................................................... 20
Figure 4.31 Logo-4 Animation 3 .......................................................................................... 20
Figure 4.32 Logo-5 Animation 4 .......................................................................................... 21
Figure 4.33 Logo-5 Animation 5 .......................................................................................... 21
Figure 4.34 Logo-5 Animation 6 .......................................................................................... 21
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Copyright © 2014 Future Technology Devices International Limited
Application Note
AN_285 FT800 Demo Application - Logo Animation
Version
Document Reference No.: FT_000948
1.0
Clearance No.: FTDI#378
Appendix C – Revision History
Document Title:
AN_285 FT800 Demo Application - Logo Animation
Document Reference No.:
FT_000948
Clearance No.:
FTDI# 378
Product Page:
http://www.ftdichip.com/FTProducts.htm
Document Feedback:
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Revision
1.0
Changes
Initial Release
Date
2014-03-17
378
25
Copyright © 2014 Future Technology Devices International Limited