From 0f97d9292cc7ff97f61f68b69c5a375cc023a5af Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Mon, 8 Jul 2019 05:10:02 +0200
Subject: NEWT iOS: Support Multi-Touch Events, PixelScale, ..

Note: Two subsequent commit will add some required change in the
native UIWindow/UIView creation methods to actually make the NEWT view being displayed ;-)

The demo 'com.jogamp.opengl.demos.ios.Hello' demonstrated a standard NEWT application
running on iOS.
Previous NativeWindow wrap-around demo is preserved in 'com.jogamp.opengl.demos.ios.Hello1'.

Tested on ipad 11'inch arm64 and x86_64 simulation:
- Using GearsES2 demo
- PixelScale 1f, 2f and 0f - last two using max pixel scale
- Touch w/ GearsES2 works:
-- 1 finger rotate
-- 2 finger drag
-- 2 finger pinch-zoom gesture detection
---
 src/newt/native/NewtCommon.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/newt/native/NewtCommon.c')

diff --git a/src/newt/native/NewtCommon.c b/src/newt/native/NewtCommon.c
index d580012ef..ec10b2da5 100644
--- a/src/newt/native/NewtCommon.c
+++ b/src/newt/native/NewtCommon.c
@@ -27,6 +27,7 @@
  */
 #include "NewtCommon.h"
 #include <string.h>
+#include <math.h>
 
 static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
 static jclass    runtimeExceptionClz=NULL;
@@ -166,3 +167,7 @@ void NewtCommon_ReleaseJNIEnv (int shallBeDetached) {
     }
 }
 
+int NewtCommon_isFloatZero(float f) {
+    // EPSILON = 1.1920929E-7f; // Float.MIN_VALUE == 1.4e-45f ; double EPSILON 2.220446049250313E-16d
+    return fabsf(f) < 1.1920929E-7f;
+}
-- 
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