JavaScript Bitmap Graphics with Canvas
Elliot, Ian
New - Soft cover
Condition: New
Ships from Germany to U.S.A.
Quantity: Over 20 available
Add to basketCondition: New
Quantity: Over 20 available
Add to basketSince the introduction of Canvas into HTML, JavaScript has been a first class language for graphics allowing you to create graphics without resorting to a library of any kind.
This book is all about programming Canvas. Like many books and online resources, it covers the basics of using Canvas, but it also goes into many of the skills that you need to make good use of these facilities. For example, a graphics application often needs to download or upload files, but exactly how to do this in a modern way is difficult to find out. If you do upload a file then you might want to work with it at the pixel level and this requires working with raw binary data. How do you do this in JavaScript, which tries hard to keep data types hidden from the programmer?
As far as the user is concerned, there is also the issue of how to keep graphic processes from bringing your application to a halt. You need to keep graphics on a separate thread or use the GPU to get the job done, or both.
Although most of the book is concerned with the standard 2d graphics context, the final chapters explain the use of WebGL with Canvas as a general purpose rendering engine, including how to use it for 3D graphics and for fast 2D graphics.
What you will learn:
The canvas element and the fundamental ideas of a path and its stroke and fill properties
Transformations – organizing and using unit shapes as the building blocks for complex graphics
Working with text including typography and SVG Text
Clipping, compositing and effects
The Image object as a source of bitmaps
Image loading and saving using async and await
Sprite-based animation using web workers and Offscreencanvas
Files blobs and the Fetch API
Image processing, filters and convolution
Using Canvas with WebGL for 3D graphics display
Using WebGL to implements fast 2D graphics
Ian Elliot is a core member of the I Programmer team where he writes on all aspects of web development. This is his fifth book on JavaScript. The others are Just JavaScript: An Idiomatic Approach; JavaScript Async: Events, Callbacks, Promises and Async Await, Just jQuery: The Core UI and Just jQuery: Events, Async & AJAX.
"About this title" may belong to another edition of this title.
Instructions for revocation/
Standard Business Terms and customer information/ data protection declaration
Revocation right for consumers
(A ?consumer? is any natural person who concludes a legal transaction which, to an overwhelming extent, cannot be attributed to either his commercial or independent professional activities.)
Instructions for revocation
Revocation right
You have the right to revoke this contract within one month without specifying any reasons.
The revocation period is one month...
Instructions for revocation/
Standard Business Terms and customer information/ data protection declaration
Revocation right for consumers
(A ‘consumer’ is any natural person who concludes a legal transaction which, to an overwhelming extent, cannot be attributed to either his commercial or independent professional activities.)
Instructions for revocation
Revocation right
You have the right to revoke this contract within one month without specifying any reasons.
The revocation period is one month with effect from the day,
on which you or a third party nominated by you, which is not the carrier, had taken possession of the products, provided you had ordered one or more products within the scope of a standard order and this/these product/products is/are delivered uniformly;
on which you or a third party nominated by you, which is not the carrier, had taken possession of the last product, provided you had ordered several products within the scope of a standard order and these products are delivered separately;
on which you or a third party nominated by you, which is not the carrier, had taken possession of the last part delivery or the last unit, provided you had ordered a product, which is delivered in several part deliveries or units;
In order to exercise your revocation right, you must inform us (Moluna GmbH, Münsterstr. 105, 48268 Greven, Telephone number: 02571/5 69 89 33, Fax number: 02571/5 69 89 30, E-Mail address: abe@moluna.de) of your decision to revoke this contract by means of a clear declaration (e.g. a letter sent via post, fax or email). You can use the enclosed specimen revocation form for this, which however is not mandatory.
In order to safeguard the revocation period, it is sufficient that you send the notification about the exercise of the revocation right before the expiry of the revocation period.
Consequences of the revocation
If you revoke this contract, we shall repay all the payments, which we received from you, including the delivery costs (with the exception of additional costs, which arise from that fact that you selected a form of delivery other than the most reasonable standard delivery offered by us), immediately and at the latest within 14 days from the day on which we received the notification about the revocation of this contract from you. We use the same means of payment, which you had originally used during the original transaction, for this repayment unless expressly agreed otherwise with you; you will not be charged any fees owing to this repayment.
We can refuse the repayment until the products are returned to us or until you have furnished evidence that you have sent the products back to us, depending on whichever is earlier.
You must return or transfer the products to us immediately and, in any case, at the latest within 14 days with effect from the day on which you inform us of the revocation of this contract. The deadline is maintained if you send the products before the expiry of the 14 day deadline.
You bear the direct costs for returning the products.
You must pay for any depreciation of the products only if this depreciation can be attributed to any handling with you that was not necessary for checking the condition, features and functionality of the products.
Criteria for exclusion or expiry
The revocation right is not available for contracts
for delivery of products, which are not prefabricated and for whose manufacturing an individual selection or stipulation by the consumer is important or which are clearly tailored to the personal requirements of the consumer;
for delivery of products, which can spoil quickly or whose use-by date would be exceeded quickly;
for delivery of alcoholic drinks, whose price was agreed at the time of concluding the contract, which however can be delivered 30 days after the conclusion of the contract at the earliest and whose current value depends on the fluctuations in the market, on which the entrepreneur has no influence;
for delivery of newspapers, periodicals or magazines with the exception of subscription contracts.
The revocation right expires prematurely in case of contracts
for delivery of sealed products, which are not suitable for return for reasons of health protection or hygiene if their seal has been removed after the delivery;
for delivery of products if they have been mixed inseparably with other goods after the delivery, owing to their condition;
for delivery of sound or video recording or computer software in a sealed package if the seal has been removed after the delivery.
Specimen - revocation form
(If you wish to revoke the contract, please fill up this form and send it back to us.)
To Moluna GmbH, Engberdingdamm 27, 48268 Greven, Fax number: 02571/5 69 89 30, Email address: abe@moluna.de :
I/we () herewith revoke the contract concluded by me/ us () regarding the purchase of the following products ()/
the provision of the following service ()
Ordered on ()/ received on ()
Name of the consumer(s)
Address of the consumer(s)
Signature of the consumer(s) (only in case of a notification on paper)
Date
(*) Cross out the incorrect option.
II. Kundeninformationen
Moluna GmbH
Engberdingdamm 27
48268 Greven
Deutschland
Telefon: 02571/5698933
E-Mail: abe@moluna.de
Wir sind nicht bereit und nicht verpflichtet, an Streitbeilegungsverfahren vor Verbraucherschlichtungsstellen teilzunehmen.
Die technischen Schritte zum Vertragsschluss, der Vertragsschluss selbst und die Korrekturmöglichkeiten erfolgen nach Maßgabe der Regelungen "Zustandekommen des Vertrages" unserer Allgemeinen Geschäftsbedingungen (Teil I.).
3.1. Vertragssprache ist deutsch .
3.2. Der vollständige Vertragstext wird von uns nicht gespeichert. Vor Absenden der Bestellung können die Vertragsdaten über die Druckfunktion des Browsers ausgedruckt oder elektronisch gesichert werden. Nach Zugang der Bestellung bei uns werden die Bestelldaten, die gesetzlich vorgeschriebenen Informationen bei Fernabsatzverträgen und die Allgemeinen Geschäftsbedingungen nochmals per E-Mail an Sie übersandt.
Die wesentlichen Merkmale der Ware und/oder Dienstleistung finden sich im jeweiligen Angebot.
5.1. Die in den jeweiligen Angeboten angeführten Preise sowie die Versandkosten stellen Gesamtpreise dar. Sie beinhalten alle Preisbestandteile einschließlich aller anfallenden Steuern.
5.2. Die anfallenden Versandkosten sind nicht im Kaufpreis enthalten. Sie sind über eine entsprechend bezeichnete Schaltfläche auf unserer Internetpräsenz oder im jeweiligen Angebot aufrufbar, werden im Laufe des Bestellvorganges gesondert ausgewiesen und sind von Ihnen zusätzlich zu tragen, soweit nicht die versandkostenfreie Lieferung zugesagt ist.
5.3. Die Ihnen zur Verfügung stehenden Zahlungsarten sind unter einer entsprechend bezeichneten Schaltfläche auf unserer Internetpräsenz oder im jeweiligen Angebot ausgewiesen.
5.4. Soweit bei den einzelnen Zahlungsarten nicht anders angegeben, sind die Zahlungsansprüche aus dem geschlossenen Vertrag sofort zur Zahlung fällig.
6.1. Die Lieferbedingungen, der Liefertermin sowie gegebenenfalls bestehende Lieferbeschränkungen finden sich unter einer entsprechend bezeichneten Schaltfläche auf unserer Internetpräsenz oder im jeweiligen Angebot.
Soweit im jeweiligen Angebot oder unter der entsprechend bezeichneten Schaltfläche keine andere Frist angegeben ist, erfolgt die Lieferung der Ware innerhalb von 3-5 Tagen nach Vertragsschluss (bei vereinbarter Vorauszahlung jedoch erst nach dem Zeitpunkt Ihrer Zahlungsanweisung).
6.2. Soweit Sie Verbraucher sind ist gesetzlich geregelt, dass die Gefahr des zufälligen Untergangs und der zufälligen Verschlechterung der verkauften Sache während der Versendung erst mit der Übergabe der Ware an Sie übergeht, unabhängig davon, ob die Versendung versichert oder unversichert erfolgt. Dies gilt nicht, wenn Sie eigenständig ein nicht vom Unternehmer benanntes Transportunternehmen oder eine sonst zur Ausführung der Versendung bestimmte Person beauftragt haben.
Sind Sie Unternehmer, erfolgt die Lieferung und Versendung auf Ihre Gefahr.
Die Mängelhaftung richtet sich nach der Regelung "Gewährleistung" in unseren Allgemeinen Geschäftsbedingungen (Teil I).
letzte Aktualisierung: 23.10.2019
| Order quantity | 26 to 60 business days | 26 to 60 business days |
|---|---|---|
| First item | £ 42.29 | £ 42.29 |
Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.