The following options can be used to customize taccgl™. Options (except taccgl_debug) currently need
to be set before the first call to taccgl™. In future it may however
be required for some options to be set before the script tag including the library.
Options are in fact javaScript variables set to a selected value.
| var taccgl_debug = false | If enabled taccgl™ is running in debug mode and displaying debug output and error
messages. If disabled, canvas 3D is silently disabled upon errors.
This option does only work in the uncompressed version of the
library and there it is disabled default. In the compressed version debug code has been deleted.
This option needs to be enabled before loading the library.
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| var taccgl_errcheck = true | If enabled taccgl™ performs detailed WebGL™ error checking
when setting up animations.
This option does only work in the uncompressed version of the
library and there it is enabled by default. In the compressed version debug code has been deleted.
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| var taccgl_looperrcheck = false | If enabled taccgl™ performs detailed WebGL™ error checking
while animations are running. This has a high performance impact.
This option does only work in the uncompressed version of the
library and there it is disabled by default. In the compressed version debug code has been deleted.
In the compressed version and When disabled taccgl™ checks for errors once per frame.
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| var taccgl_debugButtons = true | Embeds links for debugging into the HTML page, e.g. to show the texture canvas.
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| var taccgl_showShader = true | Shows the shader source code. Useful when developing shaders.
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var taccgl_texCanWidth = 1200;
var taccgl_texCanHeight= 1424;
| Defines the size of the Texture Canvas. Only HTML elements fitting
on the Texture Canvas can be painted and can appear in animations.
The size of the texture canvas is relevant for performance and memory consumption
in some browsers. Especially in Chrome a large texture canvas increases the time
needed for starting an animation.
|
| var taccgl_vertexMem = 500000 | Memory initially allocated for each of the vertex buffers.
Buffers are meanwhile automatically enlarged when needed, so there actually is no reason any more to use this option.
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| var taccgl_epwarning | Defines the text of the epilepsy warning. |
| var taccgl_immediateStop = 5 | Defines a minimal frame rate. If the frame rate drops below, taccgl™
deactivates itself. This avoids that very slow animations can interfere with the normal operation
of a page. |
| var taccgl_TM = true | Can be set to false in order to disable the TM in the standard shader.
If disabled, the value of the TM is ignored and the shader is slightly faster.
|
| var taccgl_shadowFactor | Controls darkness of the shadows. A factor of 0 does not
show any shadows (although it still internally calculates the shadows). A factor of 1 draws shaded surfaces
using ambient lighting only. A factor of 0.8 (which is the default) still uses 20% of diffuse lighting for
the shaded surfaces.
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| var taccgl_parallax = true | may be
true or false, default is true. If enabled adjusting the eye
position is done using uniform variables (otherwise it is
compiled into the shader) and so becomes drastically faster at
the expense of a slight general performance penalty. For
pages using a fixed eye position disabeling this option might
lead to a small performance gain.
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| var taccgl_qmix = true | may be
true or false, default is true.
If enabled shaders use more efficient but less general code to mix both textures.
This works fine if at most one texture is blended in, which is
often the case. If you have problems with blending disable this option.
|
| var taccgl_3d = true | Can be set to false to disable 3D mode.
This is useful to test pages in 2d mode.
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| var taccgl_2d = true | Can be set to false to disable 2D mode.
This is useful for testing.
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WebGL™ is a trademark of the Khronos Group Inc.
3D Animation
