On Echart, I am using a brush mode to select some area on the chart. The brush selection has a color which is configurable. I would like to know if it's possible to make the brush selection transparent and darken the part of the chart which is not sectioned.
The result should look like that : (the highlighted part is the part sectioned with the brush mode)
Related
Now, I'm using phpSpreadsheet Chart when writing a graph.
My question is how do I set a background color (gray color) in Chart plotarea.
I want to apply a brighten effect above my scene.
My scene contains tiles, and I want to perform white flash for a few frames by code.
I have already tried this code:
private Tilemap tm;
...
tm = GetComponent<Tilemap>();
tm.color = new Color(0.5f,1.0f,1.0f,1.0f);
This code darkens the scene by a certain color amount, but I wish to brighten it.
Your code is not working because in Unity if you render an image (in your case tile) the original color of the image is when its color is white (255,255,255,255).
It means that if you change the color of an image it will add this color to this image.
For instance, if you set the color of an image to red, the image colors will become more similar to red than the original image.
As I see it you have 2 ways to perform the white flash:
A) Add another image of a white rectangle that covers all the screen and set it's alpha color to a low number (the lower the number the lighter flash effect).
In the editor disable this object's renderer and when you want to perform a flash effect enable this object from the code (You can improve this with animations or code to get a smooth flash animation).
B) Install the package "2D Light". This is an experimental package that allow you to render 2d light.
This package contains a lot of components that allow you to stimulate light.
I have found a way to do this.
I created a new PNG that only contains white shapes on a transparent background.
There are about 20 pieces that match the shapes of my level tilemap.
Now I just create a new (white) tilemap above the level tilemap in the shape of the highlight.
Then I set the alpha of the white tilemap in code.
It works :)
I asked this question on the Graphic Design site, but it includes a programming component that might be better answered here.
Specifically, I have a bunch of photographic crayon images. I would like to remove the color from one to produce a neutral image that I can load into an iPhone app that I'm writing and dynamically color. The crayon images have dark regions (shadows) and light regions (shine) which I would like to preserve. I will be dynamically coloring it with many different colors, ranging from white to rainbow colors to black.
My first inclination is to turn the image into a grayscale image and then somehow turn the color channel into an alpha channel, and change the color of all pixels to black. Then I could use it as a mask. However, this would only preserve the shadows, and I would lose all the highlights.
Any ideas?
Two options come to mind:
Make a grayscale version that could be tinted as you said, with the shadows and highlights simply white and gray.
Make an outline, i.e. an image with alpha that had 0% opacity in the colored parts, say 10% white over the highlights, 10% black on the shadows, and 100% black/dark gray for the lines/edges. The idea being that you could put any color under the outline and it would look right.
I am using a uipicker as an input view for a text control. I also have a toolbar set up as an accessory input view. I would like the toolbar tint to match the picker. I have tried using the magnifier tool on the color chooser to get the RGB for the picker, but when I use these RGB values to set the tint on the toolbar I get get a close, but not exact match.
Is there anyway to figure out exactly the background color of the picker? None of the palettes in the color chooser seem to have this particular shade of gray with a slight hint of blue.
Thanks,
Jenny
The border consists of a gradient for the top half and a solid color for the bottom half:
As for the 'white' background, the brightest part is a #fafafa to #5f627c gradient.
I have a line of text which I want to display behind a CALayer, and when behind, then the text color should appear in a different color in the overlapping area.
The color of the text is black, and the text color should appear as white on the red layer when they overlap (they may both move around, so this needs to be continuously updated).
How may this be accomplished?
This can’t be done with any blend mode. You’ll need to render the text into the foreground layer in white by hand.
One trick you could try is to keep the white text always visible, but clipped by the layer that moves around using a second layer that also moves, set as the text’s mask.