User upload the picture of wall. The wall may contain shadows and objects. PHP convert it into svg image. Is it possible to change the colour of the wall with shadow into specific colour. Please inform is there any javascript api to do the task.
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Why is that?
https://threejs.org/editor/
This is due to multiple light sources in the scene. They are all casting shadows through different angles, which is why you see this.
I'm not able to resolve this issue in multiple plant models I got from Turbosquid.
Specifically, the Petals of the flowers like the one pictured here. Petals appear as rectangles (as per original Geometry) even with Transparency set to a masking image (attached). I've also attached a screenshot of settings as SceneKit Editor/XCode show. Any idea what am I missing?
Rendered Object (Yellow Flowers with Rectangular Petals) with partial Material Properties
Additional Material Properties
Masking Image
You will want to set the transparency mode to "RBG Zero" in the UI (which maps to SCNTransparencyModeRGBZero).
Note that it'll require the image to be inverted (black is opaque, white is transparent).
I was wondering how to draw bounding boxes around objects in an image using FLutter.
Neither Image picker nor Image cropper does it.
I would like to let the user select an image from gallery (done) and would like to let him draw boxes around objects and use it in the code.
Thanks for the help
I was browsing the home page of canva.com
I was surprised by the UI effect of hover blur effect on the home screen. How can we develop such a feature on our website. Is it using CSS3 or some other javascript plugin libraries.
Thanks
They use a blurred background image, a canvas and an unblurred version of the image. Moving the mouse 'draws' (a portion of) the sharp image onto an otherwise transparent canvas. This makes it look like some kind of magic, when in reality it's just selectively copying a src image onto a canvas. I imagine a second, off-screen canvas is used to allow the 'drawn' lines to have their opacity faded. This canvas is then used to blend the copied image with the blurred image. Look into "canvas blending modes"
First of all I will explain my situation so you can know my problem a little better. I'm making a HTML5 app. I have a canvas, and using a color picker you can change the color of the canvas. Now i have a picture which I want to put on the canvas but that pictures color needs to be changed using a color picker. So i need to replace, lets say, black color on that picture and put it on the canvas so it dosnt screw up the background.
So that will look like this:
1st color picker- changes the color of the canvas
2nd color picker - replaces the black color on the image with the one in the color picker and puts it on the canvas
Now my problem is how to replace the color on the image without reloading the page.
My only condition is no using silverlight, flash, java or any other similar tehnology that need 3rd party software to be installed on the device.
Thanks in advance.
If you dont understand my query fully, feel free to ask.
My approach with a JS only solution could be:
Loading the image inside a canvas element. Look at the MDC canvas tutorial
Trigger the user click on the canvas and get the pixel color (see links below to know how to get the color of a pixel) and look at this answer to get the mouse position
Substitute all the colors in the canvas with the one the user pick. For some examples about pixel manipulation:
Pushing pixel with canvas at Mozilla Hacks
http://beej.us/blog/2010/02/html5s-canvas-part-ii-pixel-manipulation/
This JS at mezzoblue apply heavy filter to an image
After some canvas experiment I notice that mostly in all the browser the pixel manipulation with canvas could be very slow also with small images. So another experiment to do could be to get the pixel color and then:
pass the color information to a PHP (or another server side script) with an AJAX call
do the color manipulation with an image library like GD or imagemagik
return back your image with the Ajax response
reload your canvas with the modified version of the image