I need to draw a diagram with different colors. Therefore I would like to have one layer per color.
When I add a layer that contains only a rectangular filled with a color above a layer with a white drawing on a black background. Then I can use the "Blend mode" multiply and the white drawing is colorized.
Is it also possible to just colorize everything in a layer that is black?
I don't think there'll be any GUI-based solution lighter than the one you have.
But since you are in StackOverflow, you can probably code. Then you could use a script with a text file parser (such as sed) to modify the colour of desired elements in the svg file.
Is it possible to create this shape with two colors in QGIS?
To get this kind of effect, we can use multiple layers on the symbol selector interface. Add in another layer to the symbol (using the plus symbol in the bottom-left corner), set both layers to have a transparent fill and set the outline of the bottom layer to have a wider outline than the top layer. Then set the colours for the two layers accordingly, with transparency scaled down for the bottom layer. Here are a few screenshots, though I've used black instead of white to make it more visible on the symbol selector dialogue:
Note the "outline width" on the bottom layer is larger than that on the top, to let it show through. Hope this helps!
I am refering to a older question saying color blending with GDI+
Using GDI+ with Windows Forms, I want to be able to draw with a pen and blend color based on the destination pixel color.
For example, if I draw a line and it passes over black pixels, I want it to be a lighter color (like white for example) so that it's visible. When that same line passes over white pixels, it should be a darker color (black for example) so that it's still clearly visible.
the answers says to use a color matrix for transformation
so i started implementing it..
My image is present in raw data format in rgb48
Gdiplus::Bitmap image(input.width,input.height,input.width*6,PixelFormat48bppRGB,(unsigned char*)rgb48);
Gdiplus::Image *images= image.GetThumbnailImage(input.width,input.height);
Gdiplus::TextureBrush brush(images);
Gdiplus::Pen pen(&brush);
Gdiplus::ColorMatrix matrix={
-1.0f,0.0f,0.0f,0.0f,0.0f,
0.0f,-1.0f,0.0f,0.0f,0.0f,
0.0f,0.0f,-1.0f,0.0f,0.0f,
0.0f,0.0f,0.0f,1.0f,0.0f,
1.0f,1.0f,1.0f,0.0f,1.0f,
};
Gdiplus::Graphics gfx(&image1);
Gdiplus::ImageAttributes imageAttr;
imageAttr.SetColorMatrix(&matrix);
gfx.DrawImage(images,Gdiplus::Rect(0,0,input.width,input.height),0,0,1024,1024,Gdiplus::UnitPixel,&imageAttr);
I am not getting what i expect..Can some one help me in finding the mistake i m doing.
You can use the alpha component of a color to specify transparency, so that colors can be combined. However, if you want the combination to be something other than the alpha blend, you must draw the pixels yourself. You could first draw into a transparent bitmap, then render that onto the destination pixel by pixel.
I downloaded a icon, and now i want to reset the color of it, but i'm not good at photoshop, i've set the color of it to be red, but there are to many edges and corners, please tell me how to remove those edges by using photoshop step by step, thanks a lot.
here is the icon i downloaded:
and this is my ugly one:
The best way to alter a single color like this on a simple image such as this is to alter the Hue and Saturation [CTRL / CMD + U]...
This allows you greater color control and keeps the anti-aliased edges of the image intact.
Most beginners alter colors like this by simply selecting the color with the wand, or using the paint bucket on the color. Unfortunately this usually does one of 2 things:
Makes the ragged edges that you saw.
Leaves a halo of the old color as an orphan.
I did this in a few seconds with that tool:
I have a design in .psd format. It is using various layers and diffrent settings for opacity. I am using Photoshop CS3. How can I get background color of the layer. One way is to use in-build Color Palette utility but that doesn't suits me. I want a way by which I can get exact Brush that is used for the background. It may or may not have Gradients.
Not that this is programming related, but use the eye-dropper tool.
http://www.ehow.com/how_2193268_use-eye-dropper-tool-photoshop.html
Once the color is placed into your "foreground color" box, click the box and it will show you the color in RGB, Hex, and pretty much any other way you can display a color value.