graphicspath

How can I draw multi-colored text using graphics class on panel?

烂漫一生 提交于 2019-12-11 04:13:22
问题 I want to draw the following text on panel: It is a multi-colored text. I found this article about drawing multicolored text. I replaced characters with words but it doesn't work. (I use FillPath/DrawPath to draw text) my code: private void Form1_Paint(object sender, PaintEventArgs e) { const string txt = "C# Helper! Draw some text with each letter in a random color."; // Make the font. using (Font the_font = new Font("Times New Roman", 40, FontStyle.Bold | FontStyle.Italic)) { // Make a

How do I draw a transparent rectangle?

一世执手 提交于 2019-12-08 13:35:32
问题 I am nearly there with this ... :) I have implemented my own double buffer ... So I create a bitmap: if (_Bitmap != null) _Bitmap.Dispose(); if (_Graphics != null) _Graphics.Dispose(); _Bitmap = new Bitmap(Bounds.Width, Bounds.Height); _Bitmap.MakeTransparent(Color.Transparent); _Graphics = Graphics.FromImage(_Bitmap); _Graphics.FillRectangle(Brushes.Transparent, Bounds); I thought that I might have to manually set the bitmap as transparent. In my handlers OnPaint method it does this:

Draw border just inside non-transparent portion of image

浪尽此生 提交于 2019-12-06 14:08:00
问题 this thread is almost what I need: Creating a GraphicsPath from a semi-transparent bitmap but he is drawing an outline AROUND the image - I need to draw one just a couple of pixels INSIDE the image. basically I'm trying to draw a "Focus Rectangle" (except it's not a rectangle) the result needs to be in the form of a GraphicsPath so i can fit it right into my current code. private function GetImagePath(img as Image) as GraphicsPath ... end function [EDIT] ok, first of all i cant even get the

Draw border just inside non-transparent portion of image

倖福魔咒の 提交于 2019-12-04 19:36:46
this thread is almost what I need: Creating a GraphicsPath from a semi-transparent bitmap but he is drawing an outline AROUND the image - I need to draw one just a couple of pixels INSIDE the image. basically I'm trying to draw a "Focus Rectangle" (except it's not a rectangle) the result needs to be in the form of a GraphicsPath so i can fit it right into my current code. private function GetImagePath(img as Image) as GraphicsPath ... end function [EDIT] ok, first of all i cant even get the code from the other post to work. i keep getting index out of range at this line: *byte alpha =

Edit points of FreeShape

二次信任 提交于 2019-12-02 01:18:25
I'm having some GUI letting a user draw costimized GraphicsPath. I've created it using the GraphicsPath AddLine function. Now I want to implement what you can see in the attached Microsoft Word image - "Edit Points". I'm facing several problems: My path has hunders of "Lines"->each is only one pixel sized. I want to select only "key Points". How do I do that? It's kind of revers of "Flatten", couldn't find such a function. Is there an existing .Net function to draw the small blue rectangles, and the small green circle around the path? and what about the rectangles around each selected point?

What's the opposite of polygon triangulation?

狂风中的少年 提交于 2019-12-02 01:08:15
After I've done a 2D triangulation, some triangles have the same color and I want to recombine them for drawing into like-colored graphics paths. I find that if I just draw the triangles one by one, some graphic renderers shows seams between the triangles (at least if anti-aliasing and/or transparency is involved). So how do I take a set of (non-overlapping) triangles and produce a graphics path, which may contain holes and disjoint polygons? Blindly adding the triangles to a graphics path actually works pretty well for filling (though not for stroking, of course), but it doesn't feel right to

.NET GDI+: Drawing lines with rounded corners

蹲街弑〆低调 提交于 2019-12-01 21:44:33
Given an array of points, it is easy to draw a line based on these, e.g. using the GraphicsPath class. For instance, the following array of points... [0]: (0,0) [1]: (100,0) [2]: (0,100) [3]: (100,100) ...describes a line that resembles a Z. But here comes the challenge; I need to draw rounded corners with a radius of e.g. 10 pixels. By corners I mean the points in the line that aren't start or end points. In this case there are two corners at (0,100) and (100,0) . I've played around with beziers, curves and arcs, some of which might hold the solution - I just haven't been able to find it

Oddly drawn GraphicsPath with Graphics.FillPath

烈酒焚心 提交于 2019-11-30 09:06:02
问题 I have written some code which creates a rounded rectangle GraphicsPath , based on a custom structure, BorderRadius (which allows me to define the top left, top right, bottom left and bottom right radius of the rectangle), and the initial Rectangle itself: public static GraphicsPath CreateRoundRectanglePath(BorderRadius radius, Rectangle rectangle) { GraphicsPath result = new GraphicsPath(); if (radius.TopLeft > 0) { result.AddArc(rectangle.X, rectangle.Y, radius.TopLeft, radius.TopLeft, 180,

Oddly drawn GraphicsPath with Graphics.FillPath

我只是一个虾纸丫 提交于 2019-11-29 11:56:18
I have written some code which creates a rounded rectangle GraphicsPath , based on a custom structure, BorderRadius (which allows me to define the top left, top right, bottom left and bottom right radius of the rectangle), and the initial Rectangle itself: public static GraphicsPath CreateRoundRectanglePath(BorderRadius radius, Rectangle rectangle) { GraphicsPath result = new GraphicsPath(); if (radius.TopLeft > 0) { result.AddArc(rectangle.X, rectangle.Y, radius.TopLeft, radius.TopLeft, 180, 90); } else { result.AddLine(new System.Drawing.Point(rectangle.X, rectangle.Y), new System.Drawing

Creating a GraphicsPath from a semi-transparent bitmap

痞子三分冷 提交于 2019-11-29 00:16:59
I want to create a GraphicsPath and a list of Points to form the outline of the non-transparent area of a bitmap. If needed, I can guarantee that each image has only one solid collection of nontransparent pixels. So for example, I should be able to record the points either clockwise or counter-clockwise along the edge of the pixels and perform a full closed loop. The speed of this algorithm is not important. However, the efficiency of the resulting points is semi-important if I can skip some points to reduce in a smaller and less complex GraphicsPath. I will list my current code below which