BGRABitmap AggPas: what changed

Revision 2 to 3. Removed lines have a minus sign; added lines have a plus sign.

Old	New		Line
1		-	~~Here is a series of projects demonstrating advanced capabilities in [[BGRABitmap]] similar to [AggPas](<http://www.crossgl.com/aggpas/>)~~
2		-
3		-	~~The projects are in the bgraaggtest folder in [BGRABitmap repository](<https://github.com/bgrabitmap/bgrabitmap/tree/master/test/bgraaggtest>)~~
4		-
5		-	~~## Contents~~
	1	+	Here is a series of projects demonstrating advanced capabilities in [[BGRABitmap]] similar to [AggPas](http://www.crossgl.com/aggpas/)
6	2
7		-	* 1 Antialiasing demo (AA demo)
8		-	* 2 Alpha gradient
9		-	* 3 Blur
10		-	* 4 Bézier like splines (B-spline)
11		-	* 5 Distortions
12		-	* 6 Gouraud shading
13		-	* 7 Image filters 2
14		-	* 8 Image perspective
	3	+	The projects are in the bgraaggtest folder in [BGRABitmap repository](https://github.com/bgrabitmap/bgrabitmap/tree/master/test/bgraaggtest)
15	4
16	5		### Antialiasing demo (AA demo)
17	6
18		-	~~This program shows how the gamma factor affects how antialiasing is rendered.~~
	7	+	This program shows how the gamma factor affects how antialiasing is rendered.
19	8
20		-	~~[![aa demo.png](/wiki-images/6/69/aa_demo.png)](</File:aa_demo.png>)~~
	9	+	<img src="aa_demo.png" title="aa_demo.png" width="400" />
21	10
22	11		### Alpha gradient
23	12
24		-	~~This program shows how to apply a complex alpha mask based on a custom gradient. See [[BGRABitmap tutorial 11\|Tutorial 11]] on how to create a custom scanner.~~
	13	+	This program shows how to apply a complex alpha mask based on a custom gradient. See [[BGRABitmap tutorial 11\|Tutorial 11]] on how to create a custom scanner.
25	14
26		-	~~[![alpha gradient.png](/wiki-images/e/e2/alpha_gradient.png)](</File:alpha_gradient.png>)~~
	15	+	<img src="alpha_gradient.png" title="alpha_gradient.png" width="400" />
27	16
28	17		### Blur
29	18
30		-	~~This program shows the different types of blurs and their speed.~~
	19	+	This program shows the different types of blurs and their speed.
31	20
32		-	~~[![blur.png](/wiki-images/7/72/blur.png)](</File:blur.png>)~~
	21	+	<img src="blur.png" title="blur.png" width="400" />
33	22
34	23		### Bézier like splines (B-spline)
35	24
36		-	~~This program to demonstrate various kind of spline interpolations and how to use a path cursor.~~
	25	+	This program to demonstrate various kind of spline interpolations and how to use a path cursor.
37	26
38		-	~~[![bspline.png](/wiki-images/2/28/bspline.png)](</File:bspline.png>)~~
	27	+	<img src="bspline.png" title="bspline.png" width="400" />
39	28
40		-	The TBGRAPath objet takes a series of instructions to draw a path in a similar way as with HTML canvas. To define a polygon, you can call `moveTo(x,y)` to define the first point, and then `lineTo(x,y)` for each subsequent point. Finally you can call `closePath` to end the polygon.
	29	+	The TBGRAPath objet takes a series of instructions to draw a path in a similar way as with HTML canvas. To define a polygon, you can call `moveTo(x,y)` to define the first point, and then `lineTo(x,y)` for each subsequent point. Finally you can call `closePath` to end the polygon.
41	30
42		-	~~Once the path is created, you can draw it and fill it, either using its `stroke` and `fill` functions, or by calling `TBGRABitmap.DrawPath` or `FillPath` functions.~~
	31	+	Once the path is created, you can draw it and fill it, either using its `stroke` and `fill` functions, or by calling `TBGRABitmap.DrawPath` or `FillPath` functions.
43	32
44		-	Do draw a symbol along the path, you can use `TBGRAPath.CreateCursor` function to create a cursor. The cursor has `MoveForward` and `MoveBackward` for example to move along the path. They return the actual moved length, which will be 0 when the end of the path has been reached.
	33	+	Do draw a symbol along the path, you can use `TBGRAPath.CreateCursor` function to create a cursor. The cursor has `MoveForward` and `MoveBackward` for example to move along the path. They return the actual moved length, which will be 0 when the end of the path has been reached.
45	34
46		-	~~The `CurrentCoordinate` property contains the current position and the `CurrentTangent` contains a unit vector to align the shape.~~
	35	+	The `CurrentCoordinate` property contains the current position and the `CurrentTangent` contains a unit vector to align the shape.
47	36
48	37		### Distortions
49	38
50		-	~~This program shows how to apply a distortion to an image or a gradient.~~
	39	+	This program shows how to apply a distortion to an image or a gradient.
51	40
52		-	~~[![distortions.png](/wiki-images/b/ba/distortions.png)](</File:distortions.png>)~~
	41	+	<img src="distortions.png" title="distortions.png" width="400" />
53	42
54	43		### Gouraud shading
55	44
56		-	~~This program demonstrates how to do a multi-polygon Gouraud shading.~~
	45	+	This program demonstrates how to do a multi-polygon Gouraud shading.
57	46
58		-	~~[![gouraud.png](/wiki-images/5/56/gouraud.png)](</File:gouraud.png>)~~
	47	+	<img src="gouraud.png" title="gouraud.png" width="400" />
59	48
60	49		### Image filters 2
61	50
62		-	~~This program shows the various interpolation filters that can be used when resampling.~~
	51	+	This program shows the various interpolation filters that can be used when resampling.
63	52
64		-	~~[![image filters2.png](/wiki-images/1/1b/image_filters2.png)](</File:image_filters2.png>)~~
	53	+	<img src="image_filters2.png" title="image_filters2.png" width="400" />
65	54
66	55		### Image perspective
67	56
68		-	~~This program demonstrates the different ways of applying a texture to a quad.~~
	57	+	This program demonstrates the different ways of applying a texture to a quad.
69	58
70		-	~~[![image perspective.png](/wiki-images/7/7a/image_perspective.png)](</File:image_perspective.png>)~~
	59	+	<img src="image_perspective.png" title="image_perspective.png" width="400" />
71	60
72	61		---
73		-	From the Free Pascal wiki, page "BGRABitmap AggPas", as the Internet Archive kept it on 2023-05-30. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).
	62	+	From the Free Pascal wiki, page "BGRABitmap AggPas", as it stood on 2023-05-21 after a change by Circular, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).

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