Camera.cpp revision 4cb1753ec6e90d7e747880c599dc1c164a568cf3 
1#include "jni.h"
2#include <android_runtime/AndroidRuntime.h>
3
4#include "SkCamera.h"
5
6static jfieldID gNativeInstanceFieldID;
7
8static void Camera_constructor(JNIEnv* env, jobject obj) {
9    Sk3DView* view = new Sk3DView;
10    env->SetIntField(obj, gNativeInstanceFieldID, (int)view);
11}
12
13static void Camera_destructor(JNIEnv* env, jobject obj) {
14    delete (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
15}
16
17static void Camera_save(JNIEnv* env, jobject obj) {
18    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
19    v->save();
20}
21
22static void Camera_restore(JNIEnv* env, jobject obj) {
23    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
24    v->restore();
25}
26
27static void Camera_translate(JNIEnv* env, jobject obj,
28                             float dx, float dy, float dz) {
29    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
30    v->translate(SkFloatToScalar(dx), SkFloatToScalar(dy), SkFloatToScalar(dz));
31}
32
33static void Camera_rotateX(JNIEnv* env, jobject obj, float degrees) {
34    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
35    v->rotateX(SkFloatToScalar(degrees));
36}
37
38static void Camera_rotateY(JNIEnv* env, jobject obj, float degrees) {
39    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
40    v->rotateY(SkFloatToScalar(degrees));
41}
42
43static void Camera_rotateZ(JNIEnv* env, jobject obj, float degrees) {
44    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
45    v->rotateZ(SkFloatToScalar(degrees));
46}
47
48static void Camera_rotate(JNIEnv* env, jobject obj, jfloat x, jfloat y, jfloat z) {
49    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
50    v->rotateX(SkFloatToScalar(x));
51    v->rotateY(SkFloatToScalar(y));
52    v->rotateZ(SkFloatToScalar(z));
53}
54
55static void Camera_setLocation(JNIEnv* env, jobject obj, jfloat x, jfloat y, jfloat z) {
56    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
57    v->setCameraLocation(SkFloatToScalar(x), SkFloatToScalar(y), SkFloatToScalar(z));
58}
59
60static void Camera_getMatrix(JNIEnv* env, jobject obj, int native_matrix) {
61    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
62    v->getMatrix((SkMatrix*)native_matrix);
63}
64
65static void Camera_applyToCanvas(JNIEnv* env, jobject obj, int native_canvas) {
66    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
67    v->applyToCanvas((SkCanvas*)native_canvas);
68}
69
70static float Camera_dotWithNormal(JNIEnv* env, jobject obj,
71                                  float x, float y, float z) {
72    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
73    SkScalar dot = v->dotWithNormal(SkFloatToScalar(x), SkFloatToScalar(y),
74                                    SkFloatToScalar(z));
75    return SkScalarToFloat(dot);
76}
77
78// ----------------------------------------------------------------------------
79
80/*
81 * JNI registration.
82 */
83static JNINativeMethod gCameraMethods[] = {
84    /* name, signature, funcPtr */
85
86    { "nativeConstructor",   "()V",    (void*)Camera_constructor   },
87    { "nativeDestructor",    "()V",    (void*)Camera_destructor    },
88    { "save",                "()V",    (void*)Camera_save          },
89    { "restore",             "()V",    (void*)Camera_restore       },
90    { "translate",           "(FFF)V", (void*)Camera_translate     },
91    { "rotateX",             "(F)V",   (void*)Camera_rotateX       },
92    { "rotateY",             "(F)V",   (void*)Camera_rotateY       },
93    { "rotateZ",             "(F)V",   (void*)Camera_rotateZ       },
94    { "rotate",              "(FFF)V", (void*)Camera_rotate        },
95    { "setLocation",         "(FFF)V", (void*)Camera_setLocation   },
96    { "nativeGetMatrix",     "(I)V",   (void*)Camera_getMatrix     },
97    { "nativeApplyToCanvas", "(I)V",   (void*)Camera_applyToCanvas },
98    { "dotWithNormal",       "(FFF)F", (void*)Camera_dotWithNormal }
99};
100
101int register_android_graphics_Camera(JNIEnv* env) {
102    jclass clazz = env->FindClass("android/graphics/Camera");
103    if (clazz == 0) {
104        return -1;
105    }
106    gNativeInstanceFieldID = env->GetFieldID(clazz, "native_instance", "I");
107    if (gNativeInstanceFieldID == 0) {
108        return -1;
109    }
110    return android::AndroidRuntime::registerNativeMethods(env,
111                                               "android/graphics/Camera",
112                                               gCameraMethods,
113                                               SK_ARRAY_COUNT(gCameraMethods));
114}
115