ImGui API

imgui-binding/src/main/native/jni_common.cpp

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+#include "jni_common.h"
+
+jfieldID imVec2XID;
+jfieldID imVec2YID;
+
+jfieldID imVec4XID;
+jfieldID imVec4YID;
+jfieldID imVec4ZID;
+jfieldID imVec4WID;
+
+namespace Jni
+{
+void InitCommon(JNIEnv* env) {
+    jclass jImVec2Class = env->FindClass("imgui/ImVec2");
+    imVec2XID = env->GetFieldID(jImVec2Class, "x", "F");
+    imVec2YID = env->GetFieldID(jImVec2Class, "y", "F");
+
+    jclass jImVec4Class = env->FindClass("imgui/ImVec4");
+    imVec4XID = env->GetFieldID(jImVec4Class, "x", "F");
+    imVec4YID = env->GetFieldID(jImVec4Class, "y", "F");
+    imVec4ZID = env->GetFieldID(jImVec4Class, "z", "F");
+    imVec4WID = env->GetFieldID(jImVec4Class, "w", "F");
+}
+
+void ImVec2Cpy(JNIEnv* env, ImVec2* src, jobject dst) {
+    env->SetFloatField(dst, imVec2XID, src->x);
+    env->SetFloatField(dst, imVec2YID, src->y);
+}
+
+void ImVec2Cpy(JNIEnv* env, ImVec2 src, jobject dst) {
+    env->SetFloatField(dst, imVec2XID, src.x);
+    env->SetFloatField(dst, imVec2YID, src.y);
+}
+
+void ImVec2Cpy(JNIEnv* env, jobject src, ImVec2* dst) {
+    dst->x = env->GetFloatField(src, imVec2XID);
+    dst->y = env->GetFloatField(src, imVec2YID);
+}
+
+void ImVec2Cpy(JNIEnv* env, jobject src, ImVec2 dst) {
+    dst.x = env->GetFloatField(src, imVec2XID);
+    dst.y = env->GetFloatField(src, imVec2YID);
+}
+
+void ImVec4Cpy(JNIEnv* env, ImVec4* src, jobject dst) {
+    env->SetFloatField(dst, imVec4XID, src->x);
+    env->SetFloatField(dst, imVec4YID, src->y);
+    env->SetFloatField(dst, imVec4ZID, src->z);
+    env->SetFloatField(dst, imVec4WID, src->w);
+}
+
+void ImVec4Cpy(JNIEnv* env, ImVec4 src, jobject dst) {
+    env->SetFloatField(dst, imVec4XID, src.x);
+    env->SetFloatField(dst, imVec4YID, src.y);
+    env->SetFloatField(dst, imVec4ZID, src.z);
+    env->SetFloatField(dst, imVec4WID, src.w);
+}
+}

imgui-binding/src/main/native/jni_common.h

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+#include <jni.h>
+#include <imgui.h>
+
+#ifndef JNI_COMMON_H
+#define JNI_COMMON_H
+
+namespace Jni
+{
+void InitCommon(JNIEnv* env);
+
+void ImVec2Cpy(JNIEnv* env, ImVec2* src, jobject dst);
+void ImVec2Cpy(JNIEnv* env, ImVec2 src, jobject dst);
+
+void ImVec2Cpy(JNIEnv* env, jobject src, ImVec2* dst);
+void ImVec2Cpy(JNIEnv* env, jobject src, ImVec2 dst);
+
+void ImVec4Cpy(JNIEnv* env, ImVec4* src, jobject dst);
+void ImVec4Cpy(JNIEnv* env, ImVec4 src, jobject dst);
+}
+
+#endif