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--- functions:addons:rect [2016/08/16 21:18] – [RectIntersects] monsterovich
+++ functions:addons:rect [2019/04/20 00:20] (current) – removed korshun
@@ Line 1: / Line 1: @@
-====== Rectangle API ======
-This is a simple library that implements basic UI elements in ACS. This library is an **addon** for the [[functions:cursor|cursor]] library.
-<note tip>**ACSRect** is not bundled with official ACSUtils. You can download it [[https://github.com/Monsterovich/acsutils/archive/acsrect.zip|here]].</note>
-Define ''ACSUTILS_RECTLIB_SAVEDSTATES'' to specify the amount of required rectangles.
-===== Example =====
-This script implements two simple buttons. You also can move them by using the right mouse button.
-<code>
-script 1 (void) net clientside
-{
-	int rects;
-	rects = RectCreate(0, 0, 64.0, 64.0);
-	rects = RectCreate(128.0, 128.0, 64.0, 64.0);
-	while(true)
-	{
-        UpdateCursor();
-        HudSetPoint(CursorX(), CursorY());
-        HudDrawImage(1, "CURSA0");
-		for (int i = 0; i <= rects; i++)
-		{
-			if (RectIsGrabbed(i, BT_ALTATTACK))
-				RectFollowCursor(i);
-			if (RectIsPressed(i, BT_ATTACK))
-				log(s:"pressed");
-			HudSetPoint(RectX1(i), RectX2(i));
-			HudDrawText(2+(i*4), "*");
-			HudSetPoint(RectX2(i), RectY1(i));
-			HudDrawText(3+(i*4), "*");
-			HudSetPoint(RectX1(i), RectY2(i));
-			HudDrawText(4+(i*4), "*");
-			HudSetPoint(RectX2(i), RectY2(i));
-			HudDrawText(5+(i*4), "*");
-		}
-		delay(1);
-	}
-}
-</code>
-====== Functions ======
-==== RectCreate ====
-''int RectCreate(fixed x, fixed y, fixed width, fixed height)''
-Creates a rectangle on the stack with the given parameters. The result value is the rectangle's id in the stack.
-==== RectsDelete ====
-''void RectsDelete(int start)''
-Deletes a group of rectangles from stack, //start// == 0 will delete all rectangles. Use non-zero values to delete the rectangles only from the top of the stack.
-===== Rectangle coordinates =====
-{{ :functions:addons:rectvex.png |}} {{ :functions:addons:rectstructure.png |}}
-==== RectX1 ====
-''fixed RectX1(int rect)''
-Returns the X coordinate of rectangle vertexes №1, №3.
-==== RectY1 ====
-''fixed RectY1(int rect)''
-Returns the Y coordinate of rectangle vertexes №1, №2.
-==== RectX2 ====
-''fixed RectX2(int rect)''
-Returns the X coordinate of rectangle vertexes №2, №4.
-==== RectY2 ====
-''fixed RectY2(int rect)''
-Returns the Y coordinate of rectangle vertexes №3, №4.
-==== RectCenterX ====
-''fixed RectCenterX(int rect)''
-Returns the X coordinate of the rectangle's center.
-==== RectCenterY ====
-''fixed RectCenterY(int rect)''
-Returns the Y coordinate of the rectangle's center.
-==== SetRectPosition ====
-''void SetRectPosition(int rect, fixed x, fixed y)''
-Sets the //X Y// of given rectangle. Rectangle position is its (X1; Y1) point.
-==== SetRectSize ====
-''void SetRectSize(int rect, fixed width, fixed height)''
-Changes the rectangle's size to //width// and //height//.
-==== RectWidth ====
-''fixed RectWidth(int rect)''
-Returns the width of the given rectangle.
-==== RectHeight ====
-''fixed RectHeight(int rect)''
-Returns the height of the given rectangle.
-==== RectFollowCursor ====
-''void RectFollowCursor(int rect)''
-Makes rect to follow mouse coordinates.
-==== RectIsPointInside ====
-''bool RectIsPointInside(int rect, fixed x, fixed y)''
-Returns true if the rectangle contains the point with the coordinates //x y//, otherwise returns false.
-==== RectIntersects ====
-''bool RectIntersects(int rect, int rect2)''
-Returns true if the rectangle with id //rect// intersects with other rectangle with id //rect2//.
-<note tip>Rectangle can't intersect with itself. So, if rect == rect2, this function returns //false//.</note>
-===== User Data =====
-You may also create custom user-defined rectangle properties.
-Define **ACSUTILS_RECTLIB_USERVARS** to specify the amount of these properties.
-==== SetRectUserData ====
-''void SetRectUserData(int rect, int id, int value)''
-Sets the value of the given custom property of the rectangle.
-==== RectGetUserData ====
-''int RectGetUserData(int rect, int id)''
-Returns the value of the rectangle's given custom property.
-==== Example ====
-A simple implementation of a checkbox button.
-<code>
-#define ACSRECT_USER_CHECKED 0
-...
-int checker = RectCreate(0, 0, 16, 16);
-...
-while(true)
-{
-...
-    int checked = RectGetUserData(checker, ACSRECT_USER_CHECKED);
-    if (RectIsClicked(checker, BT_ATTACK))
-        SetRectUserData(checker, ACSRECT_USER_CHECKED, !checked);
-...
-    delay(1);
-}
-</code>
-===== Rectangle action handlers =====
-==== RectIsHovered ====
-''bool RectIsHovered(int rect)''
-Returns true if the mouse cursor is inside the rectangle.
-==== RectIsClicked ====
-''bool RectIsClicked(int rect, int key)''
-Returns true if user clicked the rectangle once with //key//.
-==== RectIsDown ====
-''bool RectIsDown(int rect, int key)''
-Returns true if user is holding the //key// down and the mouse cursor is inside the rectangle.
-==== RectIsGrabbed ====
-''bool RectIsGrabbed(int rect, int key)''
-This function is similar to //RectIsDown//, but optimized for rectangle moving.
-==== RectIsPressed ====
-''bool RectIsPressed(int rect, int key)''
-This function is similar to //RectIsClicked//, but unlike //RectIsClicked// it makes the rectangle work like a normal button:
-  * Returns true, if user released the //key// after clicking the rectangle.
-  * Returns true, if cursor went outside the rectangle after the user had held down the //key//.
-Otherwise, it return false.

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