mirror
/
msdfgen
mirror of https://github.com/Chlumsky/msdfgen.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Implement segment API

This commit is contained in:
KitsuneAlex 2024-05-02 04:47:07 +02:00
parent 9d050afdad
commit ac81d2dc1b
No known key found for this signature in database
GPG Key ID: 6B0CE864BB69B7D0
2 changed files with 234 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

246
core/msdfgen_c.cpp
View File

@ -17,7 +17,19 @@
#include <utility>
/*
* A C-API implementation modeled closely after the msdfgen C++ API
* to allow C-programs and other language runtimes to
* use the msdfgen library. Originally written for LWJGL.
*
* @since 01/05/2024
* @author Alexander Hinze
*/
namespace {
static_assert(sizeof(msdfgen::Point2) == sizeof(msdfgen::Vector2));
static_assert(sizeof(msdfgen::Vector2) == sizeof(msdf_vector2_t));
using SDFBitmap = msdfgen::Bitmap<float>;
using SDFBitmapRef = msdfgen::BitmapRef<float>;
using PSDFBitmap = msdfgen::Bitmap<float>;
@ -191,8 +203,7 @@ MSDF_API int msdf_shape_get_bounds(msdf_shape_handle shape, msdf_bounds_t* bound
if(shape == nullptr || bounds == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
const auto src_bounds = reinterpret_cast<msdfgen::Shape*>(shape)->getBounds();
memcpy(bounds, &src_bounds, sizeof(msdfgen::Shape::Bounds));
*reinterpret_cast<msdfgen::Shape::Bounds*>(bounds) = reinterpret_cast<msdfgen::Shape*>(shape)->getBounds();
return MSDF_SUCCESS;
}
@ -211,7 +222,7 @@ MSDF_API int msdf_shape_get_contour_count(msdf_shape_handle shape, size_t* conto
return MSDF_SUCCESS;
}
MSDF_API int msdf_shape_get_contour(msdf_shape_handle shape, size_t index, msdf_contour_handle* contours) {
MSDF_API int msdf_shape_get_contour(msdf_shape_handle shape, const size_t index, msdf_contour_handle* contours) {
if(shape == nullptr || contours == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
@ -259,7 +270,11 @@ MSDF_API int msdf_shape_bound(msdf_shape_handle shape, msdf_bounds_t* bounds) {
return MSDF_SUCCESS;
}
MSDF_API int msdf_shape_bound_miters(msdf_shape_handle shape, msdf_bounds_t* bounds, double border, double miterLimit, int polarity) {
MSDF_API int msdf_shape_bound_miters(msdf_shape_handle shape,
msdf_bounds_t* bounds,
const double border,
const double miterLimit,
const int polarity) {
if(shape == nullptr || bounds == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
@ -297,7 +312,7 @@ MSDF_API int msdf_contour_get_edge_count(msdf_contour_handle contour, size_t* ed
return MSDF_SUCCESS;
}
MSDF_API int msdf_contour_get_edge(msdf_contour_handle contour, size_t index, msdf_edge_holder_handle* edges) {
MSDF_API int msdf_contour_get_edge(msdf_contour_handle contour, const size_t index, msdf_edge_holder_handle* edges) {
if(contour == nullptr || edges == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
@ -313,7 +328,11 @@ MSDF_API int msdf_contour_bound(msdf_contour_handle contour, msdf_bounds_t* boun
return MSDF_SUCCESS;
}
MSDF_API int msdf_contour_bound_miters(msdf_contour_handle contour, msdf_bounds_t* bounds, double border, double miterLimit, int polarity) {
MSDF_API int msdf_contour_bound_miters(msdf_contour_handle contour,
msdf_bounds_t* bounds,
const double border,
const double miterLimit,
const int polarity) {
if(contour == nullptr || bounds == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
@ -343,20 +362,11 @@ MSDF_API void msdf_contour_free(msdf_contour_handle contour) {
// msdf_edge_holder
int msdf_edge_alloc(msdf_segment_handle segment, msdf_edge_holder_handle* edge) {
int msdf_edge_alloc(msdf_segment_t* segment, msdf_edge_holder_handle* edge) {
if(edge == nullptr || segment == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
*edge = reinterpret_cast<msdf_edge_holder_handle>(msdf_new<msdfgen::EdgeHolder>(reinterpret_cast<msdfgen::EdgeSegment*>(segment)));
return MSDF_SUCCESS;
}
int msdf_edge_get_segment(msdf_edge_holder_handle edge, msdf_segment_handle* segment) {
if(edge == nullptr || segment == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
msdfgen::EdgeSegment* p_segment = *reinterpret_cast<msdfgen::EdgeHolder*>(edge);
*segment = reinterpret_cast<msdf_segment_handle>(p_segment);
*edge = reinterpret_cast<msdf_edge_holder_handle>(msdf_new<msdfgen::EdgeHolder>(static_cast<msdfgen::EdgeSegment*>(segment->handle)));
return MSDF_SUCCESS;
}
@ -366,58 +376,232 @@ void msdf_edge_free(msdf_edge_holder_handle edge) {
// msdf_segment
MSDF_API int msdf_segment_alloc(int type, msdf_segment_handle* segment) {
MSDF_API int msdf_segment_alloc(const int type, msdf_segment_t** segment) {
if(type < 0 || type >= MSDF_SEGMENT_TYPE_MAX) {
return MSDF_ERR_INVALID_TYPE;
}
if(segment == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
auto* wrapper = msdf_alloc<msdf_segment_t>();
wrapper->type = type;
switch(type) {
case MSDF_SEGMENT_TYPE_LINEAR:
wrapper->handle = msdf_new<msdfgen::LinearSegment>(msdfgen::Point2 {}, msdfgen::Point2 {});
break;
case MSDF_SEGMENT_TYPE_QUADRATIC:
wrapper->handle = msdf_new<msdfgen::QuadraticSegment>(msdfgen::Point2 {}, msdfgen::Point2 {}, msdfgen::Point2 {});
break;
case MSDF_SEGMENT_TYPE_CUBIC:
wrapper->handle =
msdf_new<msdfgen::CubicSegment>(msdfgen::Point2 {}, msdfgen::Point2 {}, msdfgen::Point2 {}, msdfgen::Point2 {});
break;
default:
return MSDF_ERR_INVALID_ARG;
}
*segment = wrapper;
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_type(msdf_segment_handle segment, int* type) {
MSDF_API int msdf_segment_get_point_count(msdf_segment_t* segment, size_t* point_count) {
if(segment == nullptr || point_count == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
switch(segment->type) {
case MSDF_SEGMENT_TYPE_LINEAR:
*point_count = 2;
break;
case MSDF_SEGMENT_TYPE_QUADRATIC:
*point_count = 3;
break;
case MSDF_SEGMENT_TYPE_CUBIC:
*point_count = 4;
break;
default:
*point_count = 0;
break;
}
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_point_count(msdf_segment_handle segment, size_t* point_count) {
MSDF_API int msdf_segment_get_point(msdf_segment_t* segment, const size_t index, msdf_vector2_t* point) {
if(segment == nullptr || point == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
size_t point_count;
if(msdf_segment_get_point_count(segment, &point_count) != MSDF_SUCCESS) {
return MSDF_ERR_FAILED;
}
if(index >= point_count) {
return MSDF_ERR_INVALID_INDEX;
}
switch(segment->type) {
case MSDF_SEGMENT_TYPE_LINEAR:
*reinterpret_cast<msdfgen::Point2*>(point) = static_cast<msdfgen::LinearSegment*>(segment->handle)->p[index];
break;
case MSDF_SEGMENT_TYPE_QUADRATIC:
*reinterpret_cast<msdfgen::Point2*>(point) = static_cast<msdfgen::QuadraticSegment*>(segment->handle)->p[index];
break;
case MSDF_SEGMENT_TYPE_CUBIC:
*reinterpret_cast<msdfgen::Point2*>(point) = static_cast<msdfgen::CubicSegment*>(segment->handle)->p[index];
break;
default:
return MSDF_ERR_INVALID_ARG;
}
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_point(msdf_segment_handle segment, size_t index, msdf_vector2_t* point) {
MSDF_API int msdf_segment_set_point(msdf_segment_t* segment, const size_t index, const msdf_vector2_t* point) {
if(segment == nullptr || point == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
size_t point_count;
if(msdf_segment_get_point_count(segment, &point_count) != MSDF_SUCCESS) {
return MSDF_ERR_FAILED;
}
if(index >= point_count) {
return MSDF_ERR_INVALID_INDEX;
}
switch(segment->type) {
case MSDF_SEGMENT_TYPE_LINEAR:
static_cast<msdfgen::LinearSegment*>(segment->handle)->p[index] = *reinterpret_cast<const msdfgen::Point2*>(point);
break;
case MSDF_SEGMENT_TYPE_QUADRATIC:
static_cast<msdfgen::QuadraticSegment*>(segment->handle)->p[index] = *reinterpret_cast<const msdfgen::Point2*>(point);
break;
case MSDF_SEGMENT_TYPE_CUBIC:
static_cast<msdfgen::CubicSegment*>(segment->handle)->p[index] = *reinterpret_cast<const msdfgen::Point2*>(point);
break;
default:
return MSDF_ERR_INVALID_ARG;
}
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_set_point(msdf_segment_handle segment, size_t index, const msdf_vector2_t* point) {
MSDF_API int msdf_segment_set_color(msdf_segment_t* segment, int color) {
if(segment == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
static_cast<msdfgen::EdgeSegment*>(segment->handle)->color = static_cast<msdfgen::EdgeColor>(color);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_set_color(msdf_segment_handle segment, int color) {
MSDF_API int msdf_segment_get_color(msdf_segment_t* segment, int* color) {
if(segment == nullptr || color == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
*color = static_cast<int>(static_cast<msdfgen::EdgeSegment*>(segment->handle)->color);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_color(msdf_segment_handle segment, int* color) {
MSDF_API int msdf_segment_get_direction(msdf_segment_t* segment, double param, msdf_vector2_t* direction) {
if(segment == nullptr || direction == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
*reinterpret_cast<msdfgen::Vector2*>(direction) = static_cast<msdfgen::EdgeSegment*>(segment->handle)->direction(param);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_direction(msdf_segment_handle segment, double param, msdf_vector2_t* direction) {
MSDF_API int msdf_segment_get_direction_change(msdf_segment_t* segment, double param, msdf_vector2_t* direction_change) {
if(segment == nullptr || direction_change == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
*reinterpret_cast<msdfgen::Vector2*>(direction_change) = static_cast<msdfgen::EdgeSegment*>(segment->handle)->directionChange(param);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_get_direction_change(msdf_segment_handle segment, double param, msdf_vector2_t* direction_change) {
MSDF_API int msdf_segment_point(msdf_segment_t* segment, double param, msdf_vector2_t* point) {
if(segment == nullptr || point == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
*reinterpret_cast<msdfgen::Point2*>(point) = static_cast<msdfgen::EdgeSegment*>(segment->handle)->point(param);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_point(msdf_segment_handle segment, double param, msdf_vector2_t* point) {
MSDF_API int msdf_segment_bound(msdf_segment_t* segment, msdf_bounds_t* bounds) {
if(segment == nullptr || bounds == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
static_cast<msdfgen::EdgeSegment*>(segment->handle)->bound(bounds->l, bounds->b, bounds->r, bounds->t);
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_bound(msdf_segment_handle segment, msdf_bounds_t* bounds) {
MSDF_API int msdf_segment_move_start_point(msdf_segment_t* segment, const msdf_vector2_t* point) {
if(segment == nullptr || point == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
static_cast<msdfgen::EdgeSegment*>(segment->handle)->moveStartPoint(*reinterpret_cast<const msdfgen::Point2*>(point));
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_move_start_point(msdf_segment_handle segment, const msdf_vector2_t* point) {
MSDF_API int msdf_segment_move_end_point(msdf_segment_t* segment, const msdf_vector2_t* point) {
if(segment == nullptr || point == nullptr) {
return MSDF_ERR_INVALID_ARG;
}
static_cast<msdfgen::EdgeSegment*>(segment->handle)->moveEndPoint(*reinterpret_cast<const msdfgen::Point2*>(point));
return MSDF_SUCCESS;
}
MSDF_API int msdf_segment_move_end_point(msdf_segment_handle segment, const msdf_vector2_t* point) {
MSDF_API void msdf_segment_free(msdf_segment_t* segment) {
switch(segment->type) {
case MSDF_SEGMENT_TYPE_LINEAR:
msdf_delete(static_cast<msdfgen::LinearSegment*>(segment->handle));
break;
case MSDF_SEGMENT_TYPE_QUADRATIC:
msdf_delete(static_cast<msdfgen::QuadraticSegment*>(segment->handle));
break;
case MSDF_SEGMENT_TYPE_CUBIC:
msdf_delete(static_cast<msdfgen::CubicSegment*>(segment->handle));
break;
default:
return;
}
msdf_free(segment);
}
// Main msdfgen APIs
int msdf_generate_sdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform) {
return MSDF_SUCCESS;
}
MSDF_API void msdf_segment_free(msdf_segment_handle segment) {
int msdf_generate_psdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform) {
return MSDF_SUCCESS;
}
int msdf_generate_msdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform) {
return MSDF_SUCCESS;
}
int msdf_generate_mtsdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform) {
return MSDF_SUCCESS;
}
int msdf_generate_sdf_with_config(msdf_bitmap_t* output,
msdf_shape_handle shape,
const msdf_transform_t* transform,
const msdf_config_t* config) {
return MSDF_SUCCESS;
}
int msdf_generate_psdf_with_config(msdf_bitmap_t* output,
msdf_shape_handle shape,
const msdf_transform_t* transform,
const msdf_config_t* config) {
return MSDF_SUCCESS;
}
int msdf_generate_msdf_with_config(msdf_bitmap_t* output,
msdf_shape_handle shape,
const msdf_transform_t* transform,
const msdf_multichannel_config_t* config) {
return MSDF_SUCCESS;
}
int msdf_generate_mtsdf_with_config(msdf_bitmap_t* output,
msdf_shape_handle shape,
const msdf_transform_t* transform,
const msdf_multichannel_config_t* config) {
return MSDF_SUCCESS;
}
}

36
msdfgen_c.h
View File

@ -126,11 +126,15 @@ typedef struct msdf_bitmap {
void* handle;
} msdf_bitmap_t;
typedef struct msdf_segment {
int type;
void* handle;
} msdf_segment_t;
// Opaque handle types
MSDF_DEFINE_HANDLE_TYPE(msdf_shape);
MSDF_DEFINE_HANDLE_TYPE(msdf_contour);
MSDF_DEFINE_HANDLE_TYPE(msdf_edge_holder);
MSDF_DEFINE_HANDLE_TYPE(msdf_segment);
// Exported API functions
MSDF_API void msdf_allocator_set(const msdf_allocator_t* allocator);
@ -165,24 +169,22 @@ MSDF_API int msdf_contour_get_winding(msdf_contour_handle contour, int* winding)
MSDF_API int msdf_contour_reverse(msdf_contour_handle contour);
MSDF_API void msdf_contour_free(msdf_contour_handle contour);
MSDF_API int msdf_edge_alloc(msdf_segment_handle segment, msdf_edge_holder_handle* edge);
MSDF_API int msdf_edge_get_segment(msdf_edge_holder_handle edge, msdf_segment_handle* segment);
MSDF_API int msdf_edge_alloc(msdf_segment_t* segment, msdf_edge_holder_handle* edge);
MSDF_API void msdf_edge_free(msdf_edge_holder_handle edge);
MSDF_API int msdf_segment_alloc(int type, msdf_segment_handle* segment);
MSDF_API int msdf_segment_get_type(msdf_segment_handle segment, int* type);
MSDF_API int msdf_segment_get_point_count(msdf_segment_handle segment, size_t* point_count);
MSDF_API int msdf_segment_get_point(msdf_segment_handle segment, size_t index, msdf_vector2_t* point);
MSDF_API int msdf_segment_set_point(msdf_segment_handle segment, size_t index, const msdf_vector2_t* point);
MSDF_API int msdf_segment_set_color(msdf_segment_handle segment, int color);
MSDF_API int msdf_segment_get_color(msdf_segment_handle segment, int* color);
MSDF_API int msdf_segment_get_direction(msdf_segment_handle segment, double param, msdf_vector2_t* direction);
MSDF_API int msdf_segment_get_direction_change(msdf_segment_handle segment, double param, msdf_vector2_t* direction_change);
MSDF_API int msdf_segment_point(msdf_segment_handle segment, double param, msdf_vector2_t* point);
MSDF_API int msdf_segment_bound(msdf_segment_handle segment, msdf_bounds_t* bounds);
MSDF_API int msdf_segment_move_start_point(msdf_segment_handle segment, const msdf_vector2_t* point);
MSDF_API int msdf_segment_move_end_point(msdf_segment_handle segment, const msdf_vector2_t* point);
MSDF_API void msdf_segment_free(msdf_segment_handle segment);
MSDF_API int msdf_segment_alloc(int type, msdf_segment_t** segment);
MSDF_API int msdf_segment_get_point_count(msdf_segment_t* segment, size_t* point_count);
MSDF_API int msdf_segment_get_point(msdf_segment_t* segment, size_t index, msdf_vector2_t* point);
MSDF_API int msdf_segment_set_point(msdf_segment_t* segment, size_t index, const msdf_vector2_t* point);
MSDF_API int msdf_segment_set_color(msdf_segment_t* segment, int color);
MSDF_API int msdf_segment_get_color(msdf_segment_t* segment, int* color);
MSDF_API int msdf_segment_get_direction(msdf_segment_t* segment, double param, msdf_vector2_t* direction);
MSDF_API int msdf_segment_get_direction_change(msdf_segment_t* segment, double param, msdf_vector2_t* direction_change);
MSDF_API int msdf_segment_point(msdf_segment_t* segment, double param, msdf_vector2_t* point);
MSDF_API int msdf_segment_bound(msdf_segment_t* segment, msdf_bounds_t* bounds);
MSDF_API int msdf_segment_move_start_point(msdf_segment_t* segment, const msdf_vector2_t* point);
MSDF_API int msdf_segment_move_end_point(msdf_segment_t* segment, const msdf_vector2_t* point);
MSDF_API void msdf_segment_free(msdf_segment_t* segment);
MSDF_API int msdf_generate_sdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform);
MSDF_API int msdf_generate_psdf(msdf_bitmap_t* output, msdf_shape_handle shape, const msdf_transform_t* transform);