Monday, October 26, 2020

Windows layout in... Windows

In addition to the standard Microsoft Windows shortcuts (Win + Right, Win + Up, Win + Left - try them!), I use the FancyZones feature of the Microsoft PowerToys:

https://github.com/microsoft/PowerToys/wiki/FancyZones-Overview




Tuesday, September 15, 2020

Novint Falcon - a controller device that can accurately simulate the haptic feedback of sculpting using a tool (or performing small repairs, surgery, injections etc.)

I recommend this device (Novint Falcon) only for experimenting with 3d haptic simulation platforms (ex: H3DAPI ), not for games - as games are few, old and offer interesting but repetitive haptic feedback. It's a device good for experimenting forces/elasticity/rigidity/inertia etc. in VR.

Holding the knob of the device is like holding the end of the tool. The buttons on the knob let you action various functions like actioning some clippers at the end of the tool. For example you can push push a heavy, floating object (cube) that floats in front of you in VR, like with a stick/tool. The object may oppose a configurable force, may rotate and return to its initial position.

Surfaces may have elasticity and pushing into them give the right haptic and visual feedback similar to holding a stick from one end (the knob of the device) and pushing the other end into the surface. The feedback you feel is similar to feeling through a tool that you are holding in your hand, so you do not feel like with your fingers. This is why the device is very appropiate and still in use for medical tool-related simulations (like in surgeries, or dental interventions, or injections), where you almost always feel only through a tool, and not directly through your fingers/hand.

It can also be appropiate for simulating any activity that involves small-scale movements using tools, like detailed sculpture, watch repair simulation etc. Ex: it cannot simulate the haptic feedback of using your hands, but it can accurately simulate the haptic feedback of using a tool for clay modelling, sculpting etc. Note: it does not support rotating the tool, only translating the tool in all 3 dimensions (x-y-z axes) in the confined space of a 6x6x6 inches cube.

Another usage is as a game controller, you may for example configure it as a normal 2-axes joystick, or as a 3-axes joystick, that does or does not return to center on 1, 2 or all 3 axes, with a configurable force. Not returning to center is good for example for plane/spacecraft simulators, for example you can configure a throttle controller that gives a non-linear response.

Sunday, August 16, 2020

Monday, June 29, 2020

Monitoring one or more web pages for content changes, at pixel-level

https://visualping.io/ monitors one or more web pages for content changes.
The free tier includes 65 checks per month.