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Master Dynamic Effects: Filters & Transitions in HTML

Explore how to use filters creatively for special effects and transitions dynamically in your web design projects. Learn to combine effects and create animated transitions between pages using DHTML.

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Master Dynamic Effects: Filters & Transitions in HTML

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  1. Chapter 15 - Dynamic HTML: Filters and Transitions Outline 15.1 Introduction 15.2 Flip Filters: flipv and fliph 15.3 Transparency with the chroma Filter 15.4 Creating Image masks 15.5 Miscellaneous Image Filters: invert, gray and xray 15.6 Adding shadows to Text 15.7 Creating Gradients with alpha 15.8 Making Text glow 15.9 Creating Motion with blur 15.10 Using the wave Filter 15.11 Advanced Filters: dropShadow and light 15.12 blendTrans Transition 15.13 revealTrans Transition

  2. Objectives • In this lesson, you will learn: • To use filters to achieve special effects. • To combine filters to achieve an even greater variety of special effects. • To be able to create animated visual transitions between Web pages. • To be able to modify filters dynamically, using DHTML.

  3. 15.1  Introduction • Filters • Cause changes that are persistent • Transitions • Temporary • Allow transfer from one page to another with pleasant visual effect • For example, random dissolve

  4. 15.2  Flip Filters: flipv and fliph • flipv and fliph filters mirror text or images vertically and horizontally, respectively

  5. flip.html(1 of 2)

  6. flip.html(2 of 2)

  7. fliph filter applied No filters applied Both and fliph flipv flipv filter applied filters applied

  8. 15.3  Transparency with the chroma Filter • chroma filter applies transparency effects dynamically • Without using a graphics editor to hard-code transparency into the image • onchange • Fires when the value of a form changes

  9. chroma.html(1 of 3)

  10. chroma.html(2 of 3)

  11. chroma.html(3 of 3)

  12. 15.4  Creating Image masks • Background is a solid color • Foreground is transparent to the image or color behind it

  13. mask.html(1 of 2)

  14. mask.html(2 of 2)

  15. 15.5  Miscellaneous Image Filters: invert, gray and xray • invert filter • Negative image effect • Dark areas become light and light areas become dark • gray filter • Grayscale image effect • All color is stripped from the image, only brightness data remains • xray filter • X-ray effect • Inversion of the grayscale effect

  16. misc.html(1 of 2)

  17. misc.html(2 of 2)

  18. 15.6  Adding shadows to Text • shadow filter • Showing effect • Three-dimensional appearance

  19. shadow.html(1 of 2)

  20. shadow.html(2 of 2)

  21. 15.7  Creating Gradients with alpha • alpha filter • Gradient effect • Gradual progression from starting color to target color • style • Uniform opacity (value 0) • Linear gradient (value 1) • Circular gradient (value 2) • Rectangular gradient (value 3)

  22. alpha.html(1 of 3)

  23. alpha.html(2 of 3)

  24. alpha.html(3 of 3)

  25. 15.8  Making Text glow • glow filter adds an aura of color around text

  26. glow.html(1 of 4)

  27. glow.html(2 of 4)

  28. glow.html(3 of 4)

  29. glow.html(4 of 4)

  30. 15.9  Creating Motion with blur • blur filter creates an illusion of motion by blurring text or images in a certain direction • Add • Adds a copy of the original image over the blurred image • Direction • Determines in which direction the blur filter is applied • strength • Determines how strong the blurring effect is

  31. blur.html(1 of 5)

  32. blur.html(2 of 5)

  33. blur.html(3 of 5)

  34. blur.html(4 of 5)

  35. blur.html(5 of 5)

  36. 15.10  Using the wave Filter • wave filter allows user to apply sine-wave distortions to text and images on Web pages • add • Adds a copy of the text or image underneath the filtered effect • freq • Determines the frequency of the wave applied • phase • Indicates the phase shift of the wave

  37. wave.html(1 of 2)

  38. wave.html(2 of 2)

  39. 15.11  Advanced Filters: dropShadow and light • dropShadow • Creates a blacked-out version of the image, and places it behind the image • offx and offy properties • Determined by how many pixels the drop shadow is offset • color property • Specifies the color of the drop shadow • light filters • Most powerful and advanced filter in Internet Explorer 6.0 • Allows simulation of a light source shining on Web page • All parameters and methods are set by scripting • addPoint • Adds a point light source

  40. dropshadow.html(1 of 3)

  41. dropshadow.html(2 of 3)

  42. dropshadow.html(3 of 3)

  43. conelight.html(1 of 3)

  44. conelight.html(2 of 3)

  45. conelight.html(3 of 3)

  46. 15.12  blendTrans Transition • Example of the blendTrans transition • Creates a smooth fade-in/fade-out effect

  47. blendtrans.html(1 of 2)

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