[source="csharp"]
DrawText(null, text, rect, DrawTextFormat.Left | DrawTextFormat.Top, Color.Black);
[.net] DrawText
Author
Hello, I am using the DrawText function and it works good but it is being displayed in screen coordinates with a rectangle. Is there a way to get it into 3D coordinates?
The way I want it is I have a point in 3D space and I want the text to show up on that point.
I guess I would need to grab that point and transform it to screen coords and then draw the text?
GDI has no 3D.
To make text 3D you have to use an different technology API that supports 3D.
DirectX, OpenGL, WPF or your own renderer.
To make text 3D you have to use an different technology API that supports 3D.
DirectX, OpenGL, WPF or your own renderer.
Author
Hey ernow,
I've been trying this example in one of Tom Miller's books here..
m = Mesh.TextFromFont(Graphics.device, Graphics.fontType, text, 1f, 1f);
mat = new Microsoft.DirectX.Direct3D.Material();
mat.Diffuse = Color.Black;
Graphics.device.Transform.World = Matrix.Translation(0, 0, 1);
Graphics.device.Material = mat;
m.DrawSubset(0);
When doing this though it just clears the screen of everything. You know a good way to display text with 3D coords? I just need 2D text but able to follow an object.
I've been trying this example in one of Tom Miller's books here..
m = Mesh.TextFromFont(Graphics.device, Graphics.fontType, text, 1f, 1f);
mat = new Microsoft.DirectX.Direct3D.Material();
mat.Diffuse = Color.Black;
Graphics.device.Transform.World = Matrix.Translation(0, 0, 1);
Graphics.device.Material = mat;
m.DrawSubset(0);
When doing this though it just clears the screen of everything. You know a good way to display text with 3D coords? I just need 2D text but able to follow an object.
Just guessing here:
- The diffuse color is black. Is the background black too?
- How's the camera set up? Is the translation still in view? (Near plane, far plane, correct z coordinate?)
- Any lights?
- The diffuse color is black. Is the background black too?
- How's the camera set up? Is the translation still in view? (Near plane, far plane, correct z coordinate?)
- Any lights?
Author
The background is white and lighting is set to false.
The camera is set up like this,
device.Transform.Projection = Matrix.OrthoLH(800, 600, 0.0f, 999.0f);
The camera is set up like this,
device.Transform.Projection = Matrix.OrthoLH(800, 600, 0.0f, 999.0f);
Author
lol, I just created a way to position text with 2D. Until I figure out how to do the 3D one I will use this.
this.x = 400 + (int)x - (int)Graphics.cameraPosition.X;
this.y = 300 + (int)y - (int)Graphics.cameraPosition.Y;
this.x += 25;
if ((int)y >= ((int)Graphics.cameraPosition.Y - 50))
{
this.y -= 35;
}
else
{
this.y += 5;
}
This works because I draw everything in pixels. I just compute an object's x and y values in world space and compare them to the camera which is always in the middle. x worked right off the bat but had to fiddle around with y to get it positioned properly. I wanted to do it in 3D space so the text could follow an object around as it moves but with this way I will be able to do it also.
I know people say you aren't supposed to plot stuff by pixels but I'm not sure how to do it any other way, maybe you guys could give some examples?
this.x = 400 + (int)x - (int)Graphics.cameraPosition.X;
this.y = 300 + (int)y - (int)Graphics.cameraPosition.Y;
this.x += 25;
if ((int)y >= ((int)Graphics.cameraPosition.Y - 50))
{
this.y -= 35;
}
else
{
this.y += 5;
}
This works because I draw everything in pixels. I just compute an object's x and y values in world space and compare them to the camera which is always in the middle. x worked right off the bat but had to fiddle around with y to get it positioned properly. I wanted to do it in 3D space so the text could follow an object around as it moves but with this way I will be able to do it also.
I know people say you aren't supposed to plot stuff by pixels but I'm not sure how to do it any other way, maybe you guys could give some examples?
Author
I'm trying to just draw a quad for a background for the text. I only need one so surely there is some way to draw a quad without a vertex buffer.
I heard that DrawUserPrimitives can do this and here is what I got..
t[0] = new CustomVertex.PositionColored(new Vector3(x, y, 1), Color.Red.ToArgb());
t[1] = new CustomVertex.PositionColored(new Vector3(x, y + length, 1), Color.Red.ToArgb());
t[2] = new CustomVertex.PositionColored(new Vector3(x + width, y, 1), Color.Red.ToArgb());
t[3] = new CustomVertex.PositionColored(new Vector3(x + width, y + length, 1), Color.Red.ToArgb());
Graphics.device.DrawUserPrimitives(PrimitiveType.TriangleStrip, t.Length, t);
This doesn't do anything but sometimes I can see these weird black lines appearing when I draw this.
I also tried using GDI and graphics.fillRectangle(), this was real easy and I would like to continue with it but for some reason when drawing a filled rectangle it would flicker off and on and looked pretty crappy. This only happened in fullscreen not windowed.
[Edited by - Meowza on December 29, 2009 11:04:57 PM]
I heard that DrawUserPrimitives can do this and here is what I got..
t[0] = new CustomVertex.PositionColored(new Vector3(x, y, 1), Color.Red.ToArgb());
t[1] = new CustomVertex.PositionColored(new Vector3(x, y + length, 1), Color.Red.ToArgb());
t[2] = new CustomVertex.PositionColored(new Vector3(x + width, y, 1), Color.Red.ToArgb());
t[3] = new CustomVertex.PositionColored(new Vector3(x + width, y + length, 1), Color.Red.ToArgb());
Graphics.device.DrawUserPrimitives(PrimitiveType.TriangleStrip, t.Length, t);
This doesn't do anything but sometimes I can see these weird black lines appearing when I draw this.
I also tried using GDI and graphics.fillRectangle(), this was real easy and I would like to continue with it but for some reason when drawing a filled rectangle it would flicker off and on and looked pretty crappy. This only happened in fullscreen not windowed.
[Edited by - Meowza on December 29, 2009 11:04:57 PM]
Author
I've narrowed the problem down to this.
Graphics.device.SetStreamSource(0, Map.vb, 0);
When commenting out this and stop drawing everything but the DrawUserPrimitives then it works but when I use a vertex buffer it seems all data is stuck on that vertex buffer.
I'm gonna try and see what happens when I draw everything with out a vertex buffer. Hopefully this won't be a problem since this is a small 2D game.
[Edit] - lol dam, since getting rid of the vertex buffer I have been able to compact code like crazy, just redid the engine and it's prolly half as big as I was doing it before. Haven't tested performance yet but it seems the same.
[Edit] - So far FPS is 10 frames more but this is probably just how I restructured it. FPS is still crap when in windowed mode though, still trying to figure that one out.
[Edited by - Meowza on December 30, 2009 4:59:38 PM]
Graphics.device.SetStreamSource(0, Map.vb, 0);
When commenting out this and stop drawing everything but the DrawUserPrimitives then it works but when I use a vertex buffer it seems all data is stuck on that vertex buffer.
I'm gonna try and see what happens when I draw everything with out a vertex buffer. Hopefully this won't be a problem since this is a small 2D game.
[Edit] - lol dam, since getting rid of the vertex buffer I have been able to compact code like crazy, just redid the engine and it's prolly half as big as I was doing it before. Haven't tested performance yet but it seems the same.
[Edit] - So far FPS is 10 frames more but this is probably just how I restructured it. FPS is still crap when in windowed mode though, still trying to figure that one out.
[Edited by - Meowza on December 30, 2009 4:59:38 PM]
Author
Things are going good but still cannot get 3D text going.
m = Mesh.TextFromFont(Graphics.device, Graphics.fontType, "foo", 0f, 0f);
mat = new Microsoft.DirectX.Direct3D.Material();
mat.Diffuse = Color.Black;
Graphics.device.Transform.World = Matrix.Translation(x, y, 2);
Graphics.device.Material = mat;
m.DrawSubset(0);
When I draw this the ground disappears but character sprites are still drawn. Do you need lighting when drawing with a mesh?
Guess it'd help if I post some pics... here is what it looks like normally
http://img6.imageshack.us/img6/6180/testav.png
And here is when I try drawing the 3D text
http://img684.imageshack.us/img684/8568/test2z.png
[Edited by - Meowza on December 30, 2009 9:18:27 PM]
m = Mesh.TextFromFont(Graphics.device, Graphics.fontType, "foo", 0f, 0f);
mat = new Microsoft.DirectX.Direct3D.Material();
mat.Diffuse = Color.Black;
Graphics.device.Transform.World = Matrix.Translation(x, y, 2);
Graphics.device.Material = mat;
m.DrawSubset(0);
When I draw this the ground disappears but character sprites are still drawn. Do you need lighting when drawing with a mesh?
Guess it'd help if I post some pics... here is what it looks like normally
http://img6.imageshack.us/img6/6180/testav.png
And here is when I try drawing the 3D text
http://img684.imageshack.us/img684/8568/test2z.png
[Edited by - Meowza on December 30, 2009 9:18:27 PM]
What is the difference between the 'ground' drawing and the 'character' drawing?
There has to be a difference; it looks as if one is affected by the translation and the other one isn't. Or they are both affected but differently.
There has to be a difference; it looks as if one is affected by the translation and the other one isn't. Or they are both affected but differently.
This topic is closed to new replies.
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