static void test_crbug131181(skiatest::Reporter*) {
/*
fX = 18.8943768,
fY = 129.121277
}, {
fX = 18.8937435,
fY = 129.121689
}, {
fX = 18.8950119,
fY = 129.120422
}, {
fX = 18.5030727,
fY = 129.13121
*/
uint32_t data[] = {
0x419727af, 0x43011f0c, 0x41972663, 0x43011f27,
0x419728fc, 0x43011ed4, 0x4194064b, 0x43012197
};
SkPath path;
moveToH(&path, &data[0]);
cubicToH(&path, &data[2]);
SkAutoTUnref<SkCanvas> canvas(new_canvas(640, 480));
SkPaint paint;
paint.setAntiAlias(true);
canvas->drawPath(path, paint);
}
// we used to assert if the bounds of the device (clip) was larger than 32K
// even when the path itself was smaller. We just draw and hope in the debug
// version to not assert.
static void test_giantaa(skiatest::Reporter* reporter) {
const int W = 400;
const int H = 400;
SkAutoTUnref<SkCanvas> canvas(new_canvas(33000, 10));
canvas.get()->clear(SK_ColorTRANSPARENT);
SkPaint paint;
paint.setAntiAlias(true);
SkPath path;
path.addOval(SkRect::MakeXYWH(-10, -10, 20 + W, 20 + H));
canvas.get()->drawPath(path, paint);
}
static void test_bigcubic(skiatest::Reporter* reporter) {
#ifdef SK_SCALAR_IS_FLOAT
SkPath path;
path.moveTo(64, 3);
path.cubicTo(-329936, -100000000, -329936, 100000000, 1153, 330003);
SkPaint paint;
paint.setAntiAlias(true);
SkAutoTUnref<SkCanvas> canvas(new_canvas(640, 480));
canvas.get()->drawPath(path, paint);
#endif
}
static void test_bug533(skiatest::Reporter* reporter) {
#ifdef SK_SCALAR_IS_FLOAT
/*
http://code.google.com/p/skia/issues/detail?id=533
This particular test/bug only applies to the float case, where the
coordinates are very large.
*/
SkPath path;
path.moveTo(64, 3);
path.quadTo(-329936, -100000000, 1153, 330003);
SkPaint paint;
paint.setAntiAlias(true);
SkAutoTUnref<SkCanvas> canvas(new_canvas(640, 480));
canvas.get()->drawPath(path, paint);
#endif
}
Canvas *
detect_edges_canvas(Canvas * base,
int num_threads) {
Canvas * grayscaled_canv = grayscale_canvas(base, num_threads);
const int w = base->w;
const int h = base->h;
Canvas * grad_canv = new_canvas(w, h);
omp_set_num_threads((num_threads < 2) ? 1 : num_threads);
int x;
int y;
#pragma omp parallel private(x, y)
#pragma omp for collapse(2) schedule(dynamic, IMG_CHUNK)
for(x = 1; x < w - 1; ++x) {
for(y = 1; y < h - 1; ++y) {
int i;
int j;
int gx = 0;
for(i = -1; i < 2; ++i) {
for(j = -1; j < 2; ++j) {
gx += mattrix_x[i + 1][j + 1] * get_pixel(x + i, y + j, grayscaled_canv).r;
}
}
int gy = 0;
for(i = -1; i < 2; ++i) {
for(j = -1; j < 2; ++j) {
gy += mattrix_y[i + 1][j + 1] * get_pixel(x + i, y + j, grayscaled_canv).r;
}
}
Byte grad = (Byte) sqrt(gx * gx + gy * gy);
set_pixel(x, y, rgb(grad, grad, grad), grad_canv);
}
}
release_canvas(grayscaled_canv);
return grad_canv;
}
Canvas *
grayscale_canvas(Canvas * base,
int num_threads) {
const int w = base->w;
const int h = base->h;
Canvas * ret = new_canvas(w, h);
omp_set_num_threads((num_threads < 2) ? 1 : num_threads);
int x;
int y;
#pragma omp parallel private(x, y)
#pragma omp for collapse(2) schedule(dynamic, IMG_CHUNK)
for(x = 0; x < w; ++x) {
for(y = 0; y < h; ++y) {
const Color c = get_pixel(x, y, base);
const Color gray = grayscale(c);
set_pixel(x, y, gray, ret);
}
}
return ret;
}
// Need to exercise drawing an inverse-path whose bounds intersect the clip,
// but whose edges do not (since its a quad which draws only in the bottom half
// of its bounds).
// In the debug build, we used to assert in this case, until it was fixed.
//
static void test_inversepathwithclip(skiatest::Reporter* reporter) {
SkPath path;
path.moveTo(0, SkIntToScalar(20));
path.quadTo(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(20), SkIntToScalar(20));
path.toggleInverseFillType();
SkPaint paint;
SkAutoTUnref<SkCanvas> canvas(new_canvas(640, 480));
canvas.get()->save();
canvas.get()->clipRect(SkRect::MakeWH(SkIntToScalar(19), SkIntToScalar(11)));
paint.setAntiAlias(false);
canvas.get()->drawPath(path, paint);
paint.setAntiAlias(true);
canvas.get()->drawPath(path, paint);
canvas.get()->restore();
// Now do the test again, with the path flipped, so we only draw in the
// top half of our bounds, and have the clip intersect our bounds at the
// bottom.
path.reset(); // preserves our filltype
path.moveTo(0, SkIntToScalar(10));
path.quadTo(SkIntToScalar(10), SkIntToScalar(20),
SkIntToScalar(20), SkIntToScalar(10));
canvas.get()->clipRect(SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(19),
SkIntToScalar(19), SkIntToScalar(11)));
paint.setAntiAlias(false);
canvas.get()->drawPath(path, paint);
paint.setAntiAlias(true);
canvas.get()->drawPath(path, paint);
}
int
main(void) {
Camera * camera = create_camera();
Canvas * canvas = new_canvas(CANVAS_W,
CANVAS_H);
int i;
for(i = 0; i < MAX_SERPINSKY_PYRAMID_LEVEL; i++) {
Scene * scene = new_scene(MAX_OBJECTS_NUMBER,
MAX_LIGHT_SOURCES_NUMBER,
BACKGROUND_COLOR);
create_serpinsky_pyramid(scene, i);
// Randomness causes unreproducible results
// But in general - results are similar to Serpinsky pyramid
//generate_random_spheres(scene, i * 400);
prepare_scene(scene);
printf("Number of polygons: %i. ", scene->last_object_index + 1);
render_scene(scene,
camera,
canvas,
THREADS_NUM);
release_scene(scene);
}
release_canvas(canvas);
release_camera(camera);
return 0;
}
Canvas *
read_png(char * file_name) {
unsigned char header[8]; // 8 is the maximum size that can be checked
// open file and test for it being a png
FILE *fp = fopen(file_name, "rb");
if (!fp)
abort_("[read_png_file] File %s could not be opened for reading", file_name);
fread(header, 1, 8, fp);
if (png_sig_cmp(header, 0, 8))
abort_("[read_png_file] File %s is not recognized as a PNG file", file_name);
// initialize stuff
png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr)
abort_("[read_png_file] png_create_read_struct failed");
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr)
abort_("[read_png_file] png_create_info_struct failed");
if (setjmp(png_jmpbuf(png_ptr)))
abort_("[read_png_file] Error during init_io");
png_init_io(png_ptr, fp);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
int width = png_get_image_width(png_ptr, info_ptr);
int height = png_get_image_height(png_ptr, info_ptr);
png_set_interlace_handling(png_ptr);
png_read_update_info(png_ptr, info_ptr);
// read file
if (setjmp(png_jmpbuf(png_ptr)))
abort_("[read_png_file] Error during read_image");
png_bytep * row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height);
int y;
for (y = 0; y < height; y++)
row_pointers[y] = (png_byte*) malloc(png_get_rowbytes(png_ptr,info_ptr));
png_read_image(png_ptr, row_pointers);
Canvas * canvas = new_canvas(width, height);
int x;
for (y=0; y < canvas->h; y++) {
png_byte * row = row_pointers[y];
for(x = 0; x < canvas->w; x++) {
png_byte * ptr = &(row[x * 3]);
set_pixel(x, y, rgb(ptr[0], ptr[1], ptr[2]), canvas);
}
}
// cleanup heap allocation
for (y=0; y < canvas->h; y++)
free(row_pointers[y]);
free(row_pointers);
fclose(fp);
return canvas;
}
int
main(void) {
// Allocating scene
Scene * scene = new_scene(MAX_OBJECTS_NUMBER,
MAX_LIGHT_SOURCES_NUMBER,
BACKGROUND_COLOR);
// Allocating new sphere
Float radius = 100;
Point3d center = point3d(0, 0, 0);
Color sphere_color = rgb(250, 30, 30);
Material sphere_material = material(1, 5, 5, 10, 0, 10);
Object3d * sphere = new_sphere(center,
radius,
sphere_color,
sphere_material);
// Adding sphere to the scene
add_object(scene,
sphere);
// Allocating new triangle
Object3d * triangle = new_triangle(point3d(-700, -700, -130), // vertex 1
point3d( 700, -700, -130), // vertex 2
point3d( 0, 400, -130), // vertex 3
rgb(100, 255, 30), // color
material(1, 6, 0, 2, 0, 0) // surface params
);
// Adding triangle to the scene
add_object(scene,
triangle);
// Loading 3D model of cow from *.obj file
// defining transformations and parameters of 3D model
// TODO: must be refactored...
SceneFaceHandlerParams load_params =
new_scene_face_handler_params(scene,
// scale:
40,
// move dx, dy, dz:
-150, -100, 30,
// rotate around axises x, y, z:
0, 0, 0,
// color
rgb(200, 200, 50),
// surface params
material(2, 3, 0, 0, 0, 0)
);
load_obj("./demo/models/cow.obj",
// default handler which adding polygons of 3D model to scene:
scene_face_handler,
&load_params);
// This function is requried (bulding k-d tree of entire scene)
prepare_scene(scene);
printf("\nNumber of polygons: %i\n", scene->last_object_index + 1);
// Allocating new light source
Color light_source_color = rgb(255, 255, 255);
Point3d light_source_location = point3d(-300, 300, 300);
LightSource3d * light_source = new_light_source(light_source_location,
light_source_color);
// Adding light source to the scene
add_light_source(scene,
light_source);
// Adding fog
Float density = 0.002;
set_exponential_fog(scene, density);
// Allocating camera
// TODO: It's a pity, but quaternions are not implemented yet :(
Point3d camera_location = point3d(0, 500, 0);
Float focus = 320;
Float x_angle = -1.57;
Float y_angle = 0;
Float z_angle = 3.14;
Camera * camera = new_camera(camera_location,
x_angle,
y_angle,
z_angle,
focus);
// Rotate camera if needed
// rotate_camera(camera, d_x_angle, d_y_angle, d_z_angle);
// Move camera if needed
// move_camera(camera, vector3df(d_x, d_y, d_z));
// Alocate new canvas, to render scene on it
Canvas * canvas = new_canvas(CANVAS_W,
CANVAS_H);
render_scene(scene,
camera,
canvas,
THREADS_NUM);
// Saving rendered image in PNG format
write_png("example.png",
canvas);
release_canvas(canvas);
release_scene(scene);
release_camera(camera);
return 0;
}
