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--- en:orx:reference:math:snippets [2014/11/28 02:30 (11 years ago)] – Added OrxOBox and OrxVector snippets sausage
+++ en:orx:reference:math:snippets [2018/01/19 08:45 (8 years ago)] (current) – Moved to examples. Deleted. sausage
@@ Line 1: / Line 1: @@
-====== Math: Code Snippets ======
-===== OrxAABox =====
-===== OrxMath =====
-Convert an angle in degrees to a directional vector
-<code>
-orxFLOAT degRotation = 45;
-orxFLOAT radRotation = degRotation * orxMATH_KF_DEG_TO_RAD;
-orxFLOAT x = orxMath_Cos(radRotation);
-orxFLOAT y = orxMath_Sin(radRotation);
-orxVECTOR directionVector = {x, y, 0};
-</code>
-===== OrxOBox =====
-Function to return an object within a boxed area:
-<code>
-orxOBJECT* GetObjectInTheArea(){
-    orxVECTOR objectPickVector;
-    objectPickVector.fX = 878;
-    objectPickVector.fY = 1185;
-    objectPickVector.fZ = -1.0;
-    orxOBOX objectBoxArea;
-    orxVECTOR pivot = {0, 0, 0};
-    orxVECTOR position;
-    position.fX = 834;
-    position.fY = 1150;
-    position.fZ = -0.1;
-    orxVECTOR size;
-    size.fX = 21;
-    size.fY = 160;
-    size.fZ = 1;
-    orxOBox_2DSet(&objectBoxArea, &position, &pivot, &size, 0);
-    orxU32 objectGroupID = orxCamera_GetGroupID(pstCamera, 1);
-    orxOBJECT *objectToFind = orxObject_BoxPick(&objectBoxArea, objectGroupID);
-    return objectToFind;
-}
-</code>
-===== OrxVector =====
-Some ways to initialise an empty orxVECTOR.
-Avoid this:
-    orxVECTOR position;
-Rather, do one of these:
-    orxVECTOR position = {0, 0, 0};
-    orxVECTOR position = orxVECTOR_0;
-    orxVECTOR position;
-    position.fX = 0;
-    position.fY = 0;
-    position.fZ = 0;
-Uninitialised orxVECTORs can create unintended consequences in your game.
-You can also do:
-{{section>en:orx:reference:object:snippets#[OrxObject_SetPosition]&noheader&nofooter&noeditbutton}}

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