Camera.cpp revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c 
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_getMatrix(JNIEnv* env, jobject obj, int native_matrix) {
49    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
50    v->getMatrix((SkMatrix*)native_matrix);
51}
52
53static void Camera_applyToCanvas(JNIEnv* env, jobject obj, int native_canvas) {
54    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
55    v->applyToCanvas((SkCanvas*)native_canvas);
56}
57
58static float Camera_dotWithNormal(JNIEnv* env, jobject obj,
59                                  float x, float y, float z) {
60    Sk3DView* v = (Sk3DView*)env->GetIntField(obj, gNativeInstanceFieldID);
61    SkScalar dot = v->dotWithNormal(SkFloatToScalar(x), SkFloatToScalar(y),
62                                    SkFloatToScalar(z));
63    return SkScalarToFloat(dot);
64}
65
66// ----------------------------------------------------------------------------
67
68/*
69 * JNI registration.
70 */
71static JNINativeMethod gCameraMethods[] = {
72    /* name, signature, funcPtr */
73
74    { "nativeConstructor",   "()V",    (void*)Camera_constructor   },
75    { "nativeDestructor",    "()V",    (void*)Camera_destructor    },
76    { "save",                "()V",    (void*)Camera_save          },
77    { "restore",             "()V",    (void*)Camera_restore       },
78    { "translate",           "(FFF)V", (void*)Camera_translate     },
79    { "rotateX",             "(F)V",   (void*)Camera_rotateX       },
80    { "rotateY",             "(F)V",   (void*)Camera_rotateY       },
81    { "rotateZ",             "(F)V",   (void*)Camera_rotateZ       },
82    { "nativeGetMatrix",     "(I)V",   (void*)Camera_getMatrix     },
83    { "nativeApplyToCanvas", "(I)V",   (void*)Camera_applyToCanvas },
84    { "dotWithNormal",       "(FFF)F", (void*)Camera_dotWithNormal }
85};
86
87int register_android_graphics_Camera(JNIEnv* env);
88int register_android_graphics_Camera(JNIEnv* env) {
89    jclass clazz = env->FindClass("android/graphics/Camera");
90    if (clazz == 0) {
91        return -1;
92    }
93    gNativeInstanceFieldID = env->GetFieldID(clazz, "native_instance", "I");
94    if (gNativeInstanceFieldID == 0) {
95        return -1;
96    }
97    return android::AndroidRuntime::registerNativeMethods(env,
98                                               "android/graphics/Camera",
99                                               gCameraMethods,
100                                               SK_ARRAY_COUNT(gCameraMethods));
101}
102
103