testSvg
testAsync
testCapi
+testArc
//Shape
Result appendRect(float x, float y, float w, float h, float rx, float ry) noexcept;
Result appendCircle(float cx, float cy, float rx, float ry) noexcept;
+ Result appendArc(float x, float y, float w, float h, float startAngle, float sweep) noexcept;
Result appendPath(const PathCommand* cmds, uint32_t cmdCnt, const Point* pts, uint32_t ptsCnt) noexcept;
//Stroke
TVG_EXPORT Tvg_Result tvg_shape_close(Tvg_Paint* paint);
TVG_EXPORT Tvg_Result tvg_shape_append_rect(Tvg_Paint* paint, float x, float y, float w, float h, float rx, float ry);
TVG_EXPORT Tvg_Result tvg_shape_append_circle(Tvg_Paint* paint, float cx, float cy, float rx, float ry);
+TVG_EXPORT Tvg_Result tvg_shape_append_arc(Tvg_Paint* paint, float x, float y, float w, float h, float startAngle, float sweep);
TVG_EXPORT Tvg_Result tvg_shape_append_path(Tvg_Paint* paint, const Tvg_Path_Command* cmds, uint32_t cmdCnt, const Tvg_Point* pts, uint32_t ptsCnt);
TVG_EXPORT Tvg_Result tvg_shape_set_stroke_width(Tvg_Paint* paint, float width);
TVG_EXPORT Tvg_Result tvg_shape_set_stroke_color(Tvg_Paint* paint, uint8_t r, uint8_t g, uint8_t b, uint8_t a);
return (Tvg_Result) reinterpret_cast<Shape*>(paint)->appendRect(x, y, w, h, rx, ry);
}
+TVG_EXPORT Tvg_Result tvg_shape_append_arc(Tvg_Paint* paint, float x, float y, float w, float h, float startAngle, float sweep)
+{
+ return (Tvg_Result) reinterpret_cast<Shape*>(paint)->appendArc(x, y, w ,h, startAngle, sweep);
+}
TVG_EXPORT Tvg_Result tvg_shape_append_circle(Tvg_Paint* paint, float cx, float cy, float rx, float ry)
{
#ifdef __cplusplus
}
-#endif
\ No newline at end of file
+#endif
#ifndef _TVG_SHAPE_CPP_
#define _TVG_SHAPE_CPP_
+#include <limits>
+
#include "tvgShapeImpl.h"
/************************************************************************/
return Result::Success;
}
+Result Shape::appendArc(float x, float y, float w, float h, float startAngle, float sweep) noexcept
+{
+ const float M_PI_HALF = M_PI / 2.0;
+ const float radius = w / 2;
+
+ Point center = {x + radius, y + radius};
+
+ auto impl = pImpl.get();
+
+ startAngle = (startAngle * M_PI) / 180;
+ sweep = sweep * M_PI / 180;
+
+ auto nCurves = ceil(sweep / M_PI_HALF);
+ auto fract = fmod(sweep, M_PI_HALF);
+ fract = (fract < std::numeric_limits<float>::epsilon()) ? M_PI_HALF : fract;
+
+ for (int i = 0; i < nCurves; ++i) {
+ //bezier parameters
+ Point start = {0, 0};
+ Point end = {0, 0};
+ Point bControl1 = {0, 0};
+ Point bControl2 = {0, 0};
+
+ //variables needed to calculate bezier control points
+ auto ax = 0.0f, ay = 0.0f, bx = 0.0f, by = 0.0f, q1 = 0.0f, q2 = 0.0f, k2 = 0.0f;
+ auto endAngle = startAngle + ((i != nCurves - 1) ? M_PI_HALF : fract);
+
+ //get bezier start and end point
+ start.x = radius * cos(startAngle);
+ start.y = radius * sin(startAngle);
+ end.x = radius * cos(endAngle);
+ end.y = radius * sin(endAngle);
+
+ //get bezier control points using article:
+ //(http://itc.ktu.lt/index.php/ITC/article/view/11812/6479)
+ ax = start.x;
+ ay = start.y;
+ bx = end.x;
+ by = end.y;
+
+ q1 = ax * ax + ay * ay;
+ q2 = ax * bx + ay * by + q1;
+
+ k2 = static_cast<float> (4.0/3.0) * ((sqrt(2 * q1 * q2) - q2) / (ax * by - ay * bx));
+
+ bControl1.x = ax - k2 * ay;
+ bControl1.y = ay + k2 * ax;
+ bControl2.x = bx + k2 * by;
+ bControl2.y = by - k2 * bx;
+
+ //move points to proper arc center
+ start.x += center.x;
+ start.y += center.y;
+ end.x += center.x;
+ end.y += center.y;
+ bControl1.x += center.x;
+ bControl1.y += center.y;
+ bControl2.x += center.x;
+ bControl2.y += center.y;
+
+ impl->path->moveTo(start.x, start.y);
+ impl->path->cubicTo(bControl1.x, bControl1.y, bControl2.x, bControl2.y, end.x, end.y);
+
+ startAngle = endAngle;
+ }
+
+ IMPL->flag |= RenderUpdateFlag::Path;
+ return Result::Success;
+}
+
Result Shape::appendRect(float x, float y, float w, float h, float rx, float ry) noexcept
{
gcc -o testGradientTransform testGradientTransform.cpp -g -lstdc++ `pkg-config --cflags --libs elementary thorvg`
gcc -o testSvg testSvg.cpp -g -lstdc++ `pkg-config --cflags --libs elementary thorvg`
gcc -o testAsync testAsync.cpp -g -lstdc++ `pkg-config --cflags --libs elementary thorvg`
+ gcc -o testArc testArc.cpp -g -lstdc++ `pkg-config --cflags --libs elementary thorvg`
gcc -o testCapi testCapi.c -g `pkg-config --cflags --libs elementary thorvg`
--- /dev/null
+#include "testCommon.h"
+
+/************************************************************************/
+/* Drawing Commands */
+/************************************************************************/
+
+void tvgDrawCmds(tvg::Canvas* canvas)
+{
+ if (!canvas) return;
+
+ //draw reference rectangles
+ auto shape2 = tvg::Shape::gen();
+ shape2->appendRect(0, 0, 200, 200, 0, 0);
+ shape2->stroke(255, 0, 0, 255);
+ shape2->stroke(2);
+
+ auto shape3 = tvg::Shape::gen();
+ shape3->moveTo(0, 100);
+ shape3->lineTo(200, 100);
+ shape3->stroke(255, 0, 0, 255);
+ shape3->stroke(2);
+
+ auto shape4 = tvg::Shape::gen();
+ shape4->moveTo(100, 0);
+ shape4->lineTo(100, 200);
+ shape4->stroke(255, 0, 0, 255);
+ shape4->stroke(2);
+
+ //test arc
+ auto shape1 = tvg::Shape::gen();
+ shape1->appendArc(0, 0, 200, 200, 10, 270);
+ shape1->stroke(255, 255, 255, 255);
+ shape1->stroke(3);
+
+ //Appends Paths
+ if (canvas->push(move(shape2)) != tvg::Result::Success) return;
+ if (canvas->push(move(shape3)) != tvg::Result::Success) return;
+ if (canvas->push(move(shape4)) != tvg::Result::Success) return;
+ if (canvas->push(move(shape1)) != tvg::Result::Success) return;
+}
+
+/************************************************************************/
+/* Sw Engine Test Code */
+/************************************************************************/
+
+static unique_ptr<tvg::SwCanvas> swCanvas;
+
+void tvgSwTest(uint32_t* buffer)
+{
+ //Create a Canvas
+ swCanvas = tvg::SwCanvas::gen();
+ swCanvas->target(buffer, WIDTH, WIDTH, HEIGHT);
+
+ /* Push the shape into the Canvas drawing list
+ When this shape is into the canvas list, the shape could update & prepare
+ internal data asynchronously for coming rendering.
+ Canvas keeps this shape node unless user call canvas->clear() */
+ tvgDrawCmds(swCanvas.get());
+}
+
+void drawSwView(void* data, Eo* obj)
+{
+ if (swCanvas->draw() == tvg::Result::Success) {
+ swCanvas->sync();
+ }
+}
+
+
+/************************************************************************/
+/* GL Engine Test Code */
+/************************************************************************/
+
+static unique_ptr<tvg::GlCanvas> glCanvas;
+
+void initGLview(Evas_Object *obj)
+{
+ static constexpr auto BPP = 4;
+
+ //Create a Canvas
+ glCanvas = tvg::GlCanvas::gen();
+ glCanvas->target(nullptr, WIDTH * BPP, WIDTH, HEIGHT);
+
+ /* Push the shape into the Canvas drawing list
+ When this shape is into the canvas list, the shape could update & prepare
+ internal data asynchronously for coming rendering.
+ Canvas keeps this shape node unless user call canvas->clear() */
+ tvgDrawCmds(glCanvas.get());
+}
+
+void drawGLview(Evas_Object *obj)
+{
+ auto gl = elm_glview_gl_api_get(obj);
+ gl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+ gl->glClear(GL_COLOR_BUFFER_BIT);
+
+ if (glCanvas->draw() == tvg::Result::Success) {
+ glCanvas->sync();
+ }
+}
+
+
+/************************************************************************/
+/* Main Code */
+/************************************************************************/
+
+int main(int argc, char **argv)
+{
+ tvg::CanvasEngine tvgEngine = tvg::CanvasEngine::Sw;
+
+ if (argc > 1) {
+ if (!strcmp(argv[1], "gl")) tvgEngine = tvg::CanvasEngine::Gl;
+ }
+
+ //Initialize ThorVG Engine
+ if (tvgEngine == tvg::CanvasEngine::Sw) {
+ cout << "tvg engine: software" << endl;
+ } else {
+ cout << "tvg engine: opengl" << endl;
+ }
+
+ //Initialize ThorVG Engine
+ if (tvg::Initializer::init(tvgEngine) == tvg::Result::Success) {
+
+ elm_init(argc, argv);
+
+ if (tvgEngine == tvg::CanvasEngine::Sw) {
+ createSwView();
+ } else {
+ createGlView();
+ }
+
+ elm_run();
+ elm_shutdown();
+
+ //Terminate ThorVG Engine
+ tvg::Initializer::term(tvgEngine);
+
+ } else {
+ cout << "engine is not supported" << endl;
+ }
+ return 0;
+}
projects / platform / core / graphics / tizenvg.git / commitdiff