clerp2

GM82Project · Dec 19, 2024 · 979e20a · 979e20a
1 parent 385eed9
commit 979e20a
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Showing 2 changed files with 39 additions and 11 deletions.
diff --git a/gm82core.gej b/gm82core.gej
@@ -122,6 +122,21 @@
 					],
 					"returntype": 2
 				},
+				{
+					"name": "clerp2",
+					"extname": "",
+					"calltype": 12,
+					"helpline": "clerp2(fromA,fromB,toA,toB,value)",
+					"hidden": false,
+					"argtypes": [
+						2,
+						2,
+						2,
+						2,
+						2
+					],
+					"returntype": 2
+				},
 				{
 					"name": "color_inverse",
 					"extname": "",
@@ -308,6 +323,17 @@
 					],
 					"returntype": 1
 				},
+				{
+					"name": "file_create",
+					"extname": "",
+					"calltype": 12,
+					"helpline": "file_create(filename)",
+					"hidden": false,
+					"argtypes": [
+						1
+					],
+					"returntype": 2
+				},
 				{
 					"name": "file_get_timestamp",
 					"extname": "",
@@ -1179,17 +1205,6 @@
 						2
 					],
 					"returntype": 2
-				},
-				{
-					"name": "file_create",
-					"extname": "",
-					"calltype": 12,
-					"helpline": "file_create(filename)",
-					"hidden": false,
-					"argtypes": [
-						1
-					],
-					"returntype": 2
 				}
 			],
 			"constants": []

diff --git a/source/math.c b/source/math.c
@@ -59,6 +59,19 @@ GMREAL lerp2(double fromA, double fromB, double toA, double toB, double value) {
     return ((value-fromA)/(fromB-fromA))*(toB-toA)+toA;
 }
 
+GMREAL clerp2(double fromA, double fromB, double toA, double toB, double value) {
+    ///clerp2(fromA,fromB,toA,toB,value)
+    //fromA: start value from
+    //fromB: end value from
+    //toA: start value to
+    //toB: end value to
+    //value: value to project
+    //returns: projected value, clamped to the 'to' values
+    //Projects 'value' from line segment 'from' to segment 'to'.
+
+    return max(toA,min(toB,((value-fromA)/(fromB-fromA))*(toB-toA)+toA));
+}
+
 GMREAL unlerp(double a, double b, double val) {
     ///unlerp(a,b,val)
     //a: start value