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implement more android.graphics.Matrix methods

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This commit is contained in:
Julian Winkler
2024-03-24 16:51:03 +01:00
parent f4a0191b1c
commit 93b88ad0c3
1 changed files with 49 additions and 1 deletions
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50
src/api-impl-jni/graphics/android_graphics_Matrix.c
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@@ -44,7 +44,7 @@ JNIEXPORT jboolean JNICALL Java_android_graphics_Matrix_native_1preConcat(JNIEnv
{ {
graphene_matrix_t *matrix = (graphene_matrix_t *)_PTR(matrix_ptr); graphene_matrix_t *matrix = (graphene_matrix_t *)_PTR(matrix_ptr);
graphene_matrix_t *other = (graphene_matrix_t *)_PTR(other_ptr); graphene_matrix_t *other = (graphene_matrix_t *)_PTR(other_ptr);
graphene_matrix_multiply(matrix, other, matrix); graphene_matrix_multiply(other, matrix, matrix);
return true; return true;
} }
@@ -165,3 +165,51 @@ JNIEXPORT jboolean JNICALL Java_android_graphics_Matrix_native_1setRectToRect(JN
graphene_matrix_translate(matrix, &translation); graphene_matrix_translate(matrix, &translation);
return true; return true;
} }
JNIEXPORT void JNICALL Java_android_graphics_Matrix_native_1mapPoints(JNIEnv *env, jclass class, jlong matrix_ptr, jfloatArray dst_ref, jint dst_idx, jfloatArray src_ref, jint src_idx, jint count, jboolean is_pts)
{
graphene_matrix_t *matrix = (graphene_matrix_t *)_PTR(matrix_ptr);
graphene_matrix_t matrix_cpy;
if (!is_pts) {
// remove translation
graphene_matrix_init_from_matrix(&matrix_cpy, matrix);
graphene_point3d_t translation = GRAPHENE_POINT3D_INIT(
-graphene_matrix_get_x_translation(matrix),
-graphene_matrix_get_y_translation(matrix),
-graphene_matrix_get_z_translation(matrix));
graphene_matrix_translate(&matrix_cpy, &translation);
matrix = &matrix_cpy;
}
jfloat *src = (*env)->GetFloatArrayElements(env, src_ref, NULL);
jfloat *dst = (*env)->GetFloatArrayElements(env, dst_ref, NULL);
graphene_point_t p;
graphene_point_t res;
for (int i = 0; i < count; i++) {
p = GRAPHENE_POINT_INIT(src[src_idx + i * 2], src[src_idx + i * 2 + 1]);
graphene_matrix_transform_point(matrix, &p, &res);
dst[dst_idx + i * 2] = res.x;
dst[dst_idx + i * 2 + 1] = res.y;
}
}
JNIEXPORT void JNICALL Java_android_graphics_Matrix_native_1setTranslate(JNIEnv *env, jclass class, jlong matrix_ptr, jfloat x, jfloat y)
{
graphene_matrix_t *matrix = (graphene_matrix_t *)_PTR(matrix_ptr);
graphene_matrix_init_translate(matrix, &GRAPHENE_POINT3D_INIT(x, y, 0));
}
JNIEXPORT jboolean JNICALL Java_android_graphics_Matrix_native_1preRotate__JF(JNIEnv *env, jclass class, jlong matrix_ptr, jfloat degrees)
{
graphene_matrix_t *matrix = (graphene_matrix_t *)_PTR(matrix_ptr);
graphene_matrix_t rotation;
graphene_vec3_t rotation_axis;
graphene_vec3_init(&rotation_axis, 0, 0, 1);
graphene_matrix_init_rotate(&rotation, degrees, &rotation_axis);
graphene_matrix_multiply(&rotation, matrix, matrix);
return true;
}
JNIEXPORT jboolean JNICALL Java_android_graphics_Matrix_native_1invert(JNIEnv *env, jclass class, jlong matrix_ptr, jlong inverse_ptr)
{
return graphene_matrix_inverse((graphene_matrix_t *)_PTR(matrix_ptr), (graphene_matrix_t *)_PTR(inverse_ptr));
}