What the Heck?

[Keith Baxter]

Hi,

All is working as expected.

Check your canvas and draw parameters. Remember that the _stroke() is <CENTER ALIGNED>. So a _rect(100, 100) with a stroke 6 would be (106,106). If that is on a 100,100 canvas, 6 pix would be lost.

You moved the green _rect() that has a stroke of 1 pix, 1 pix to the right. You should only have moved it 0.5 pix to the right.

With regards to color use hex codes from here to get a desired color

https://www.colorhexa.com/c81f1f


Keith

[SimPassion]

Hi Sparky, the lines are too thin, this is what is producing washed colors on white
for other parts Keith already answered

Try this :

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(50, 50, 100, 100)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1, 1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(1, 1, 99, 99)
		_fill("green")
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

[Keith Baxter]

Hi Sparky, the lines are too thin, this is what is producing washed colors on white
for other parts Keith already answered

Try this :

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(50, 50, 100, 100)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1, 1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(1, 1, 99, 99)
		_fill("green")
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

Gilles,


Should be

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(50, 50, 100, 100)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1, 1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(0.5, 0.5, 99, 99)
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

or

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(0, 0, 200, 200)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1,1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(51,51, 98, 98)
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

The second option will give you a 0.5 Px space all around. The first option will fill the canvas.

Keith

[The Artful Dodger]

Hi, guys:

But I know how to position lines; the resultant color is NOT what I put in the lua statement, and I asked for a 1 pixel line. My problem is if I need a line 1 pixel wide, I need a line 1 pixel wide. And if I need it to be a certain colour, it should be that colour. It's not doing that.

I guess I need to record it as a bug because it's not doing what the spec says it should be doing.

Thanks for trying though, and I mean that!

Sparky

[Keith Baxter]

Hi, guys:

But I know how to position lines; the resultant color is NOT what I put in the lua statement, and I asked for a 1 pixel line. My problem is if I need a line 1 pixel wide, I need a line 1 pixel wide. And if I need it to be a certain colour, it should be that colour. It's not doing that.

I guess I need to record it as a bug because it's not doing what the spec says it should be doing.

Thanks for trying though, and I mean that!

Sparky

Sparky it is working perfect. There is nothing wrong.

Keith.

[The Artful Dodger]

Keith, I appreciate your help but if I have these Lua statements:

Code: Select all

_move_to(10, 10)
_line_to(20, 10)
_stroke(color, 1)

I expect to get a horizontal line, in the color selected, that is exactly 1 pixel wide; otherwise there is something wrong! I got a horizontal line but it was 2 pixels wide, and a washed-out color. I see no other explanation. And, you can't draw anything if the instructions do something other than what they are supposed to do. At least I can't!
That's what I've relied on ever since you urged me to use the canvas, a decision I have been very happy with.

[Keith Baxter]

Keith, I appreciate your help but if I have these Lua statements:

Code: Select all

_move_to(10, 10)
_line_to(20, 10)
_stroke(color, 1)

I expect to get a horizontal line, in the color selected, that is exactly 1 pixel wide; otherwise there is something wrong! I got a horizontal line but it was 2 pixels wide, and a washed-out color. I see no other explanation. And, you can't draw anything if the instructions do something other than what they are supposed to do. At least I can't!
That's what I've relied on ever since you urged me to use the canvas, a decision I have been very happy with.

Sparky you get exactly the color and Px with.
You must rem that the background gives perception of the line color change.

Play around with this .

Code: Select all

PaneCanvas = canvas_add(0, 0, 300, 300)
IALDCanvas = canvas_add(0, 0, 300, 300)
--
	canvas_draw(PaneCanvas, function() 
		_rect(0,0, 300, 100)
		_fill("black")
		
		_rect(0,100, 300, 100)
		_fill("pink")		
		
		_rect(0,200, 300, 100)
		_fill("yellow")		
		
		
	end)
--
	canvas_draw(IALDCanvas, function()
		_move_to(10, 10)
		_line_to(50, 10)
		_stroke("blue",1)
				
		_move_to(10, 110)
		_line_to(50, 110)
		_stroke("blue",1)		
		
		_move_to(10, 210)
		_line_to(50, 210)
		_stroke("blue",1)
		
 
 								
		_move_to(10, 30)
		_line_to(50, 30)
		_stroke("blue",2)
				
		_move_to(10, 130)
		_line_to(50, 130)
		_stroke("blue",2)		
		
		_move_to(10, 230)
		_line_to(50, 230)
		_stroke("blue",2)						
								
--Lets give the same strokes a different color	

		_move_to(110, 10)
		_line_to(150, 10)
		_stroke("#000062",1)
				
		_move_to(110, 110)
		_line_to(150, 110)
		_stroke("#000062",1)		
		
		_move_to(110, 210)
		_line_to(150, 210)
		_stroke("#000062",1)
		
 
 								
		_move_to(110, 30)
		_line_to(150, 30)
		_stroke("#000062",2)
				
		_move_to(110, 130)
		_line_to(150, 130)
		_stroke("#000062",2)		
		
		_move_to(110, 230)
		_line_to(150, 230)
		_stroke("#000062",2)

--Lets give the same strokes a different color	

		_move_to(210, 10)
		_line_to(250, 10)
		_stroke("#6262ff",1)
				
		_move_to(210, 110)
		_line_to(250, 110)
		_stroke("#6262ff",1)		
		
		_move_to(210, 210)
		_line_to(250, 210)
		_stroke("#6262ff",1)
		
 
 								
		_move_to(210, 30)
		_line_to(250, 30)
		_stroke("#6262ff",2)
				
		_move_to(210, 130)
		_line_to(250, 130)
		_stroke("#6262ff",2)		
		
		_move_to(210, 230)
		_line_to(250, 230)
		_stroke("#6262ff",2)
											
		
	end)

Keith

[SimPassion]

Hi Sparky, the lines are too thin, this is what is producing washed colors on white
for other parts Keith already answered

Try this :

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(50, 50, 100, 100)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1, 1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(1, 1, 99, 99)
		_fill("green")
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

Gilles,


Should be

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(50, 50, 100, 100)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1, 1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(0.5, 0.5, 99, 99)
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

or

Code: Select all

PaneCanvas = canvas_add(0, 0, 200, 200)
IALDCanvas = canvas_add(0, 0, 200, 200)
--
	canvas_draw(PaneCanvas, function() 
		_rect(1,1, 198, 198)
		_stroke("red", 2)
	end)
--
	canvas_draw(IALDCanvas, function()
		_rect(51,51, 98, 98)
		_stroke("green", 1)
--
		_move_to(10, 10)
		_line_to(25, 10)
		_stroke("blue", 5)
	end)

The second option will give you a 0.5 Px space all around. The first option will fill the canvas.

Keith

Hi Keith, sure right, you've already read the script I posted wasn't meant to correct other things than the color issue, outside the color issue, you've already handled the explanation and correction which was complementary to what I posted. No intend to publish a whole correction in any case. Good spot for other parts Keith !

[Keith Baxter]

Hi,
Running the above code produces this strange color affect.

ice_screenshot_20230114-011836.png (2.52 KiB) Viewed 477 times

Keith

[The Artful Dodger]

Keith: This is new - I have been using lines 1 pixel wide for months! The lines haven't changed the color nor have they changed the width. They are all over my HUD and I need them for the MCP as well.
I didn't see that you had referred it to Corjan! Thanks.