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sw_engine: support stroke dash feature
Change-Id: Ibed8bcb6a07952a059bb9a7355f7c43db97aa672
This commit is contained in:
Hermet Park
parent
dc5f9f7430
commit
9aa2566b45
9 changed files with 537 additions and 164 deletions
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@ -143,7 +143,7 @@ public:
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//Stroke
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int stroke(float width) noexcept;
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int stroke(uint8_t r, uint8_t g, uint8_t b, uint8_t a) noexcept;
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int stroke(const size_t* dashPattern, size_t cnt) noexcept;
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int stroke(const float* dashPattern, size_t cnt) noexcept;
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int stroke(StrokeCap cap) noexcept;
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int stroke(StrokeJoin join) noexcept;
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@ -163,7 +163,7 @@ public:
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float strokeWidth() const noexcept;
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int strokeColor(uint8_t* r, uint8_t* g, uint8_t* b, uint8_t* a) const noexcept;
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size_t strokeDash(const size_t** dashPattern) const noexcept;
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size_t strokeDash(const float** dashPattern) const noexcept;
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StrokeCap strokeCap() const noexcept;
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StrokeJoin strokeJoin() const noexcept;
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@ -125,7 +125,8 @@ struct SwStroke
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SwFixed angleOut;
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SwPoint center;
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SwFixed lineLength;
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SwPoint subPathStart;
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SwFixed subPathAngle;
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SwPoint ptStartSubPath;
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SwFixed subPathLineLength;
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SwFixed width;
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@ -136,11 +137,22 @@ struct SwStroke
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SwStrokeBorder borders[2];
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bool firstPt;
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bool subPathOpen;
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bool subPathAngle;
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bool openSubPath;
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bool handleWideStrokes;
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};
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struct SwDashStroke
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{
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SwOutline* outline;
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int32_t curLen;
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int32_t curIdx;
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Point ptStart;
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Point ptCur;
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float* pattern;
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size_t cnt;
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bool curOpGap;
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};
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struct SwShape
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{
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SwOutline* outline;
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@ -183,18 +195,16 @@ SwFixed mathLength(SwPoint& pt);
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bool mathSmallCubic(SwPoint* base, SwFixed& angleIn, SwFixed& angleMid, SwFixed& angleOut);
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SwFixed mathMean(SwFixed angle1, SwFixed angle2);
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void shapeReset(SwShape& sdata);
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bool shapeGenOutline(const Shape& shape, SwShape& sdata);
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bool shapeGenRle(const Shape& shape, SwShape& sdata, const SwSize& clip);
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void shapeDelOutline(SwShape& sdata);
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void shapeResetStroke(const Shape& shape, SwShape& sdata);
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bool shapeGenStrokeOutline(const Shape& shape, SwShape& sdata);
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bool shapeGenStrokeRle(const Shape& shape, SwShape& sdata, const SwSize& clip);
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void shapeTransformOutline(const Shape& shape, SwShape& sdata, const RenderTransform& transform);
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void shapeFree(SwShape* sdata);
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void shapeReset(SwShape& shape);
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bool shapeGenOutline(SwShape& shape, const Shape& sdata);
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bool shapeGenRle(SwShape& shape, const Shape& sdata, const SwSize& clip, const RenderTransform* transform);
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void shapeDelOutline(SwShape& shape);
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void shapeResetStroke(SwShape& shape, const Shape& sdata);
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bool shapeGenStrokeRle(SwShape& shape, const Shape& sdata, const SwSize& clip);
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void shapeFree(SwShape* shape);
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void strokeReset(SwStroke& stroke, float width, StrokeCap cap, StrokeJoin join);
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bool strokeParseOutline(SwStroke& stroke, SwOutline& outline);
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void strokeReset(SwStroke& stroke, const Shape& shape);
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bool strokeParseOutline(SwStroke& stroke, const SwOutline& outline);
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SwOutline* strokeExportOutline(SwStroke& stroke);
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void strokeFree(SwStroke* stroke);
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@ -140,20 +140,21 @@ static void _polarize(SwPoint& pt)
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static void _rotate(SwPoint& pt, SwFixed theta)
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{
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auto v = pt;
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SwFixed x = pt.x;
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SwFixed y = pt.y;
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//Rotate inside [-PI/4, PI/4] sector
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while (theta < -ANGLE_PI4) {
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auto tmp = v.y;
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v.y = -v.x;
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v.x = tmp;
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auto tmp = y;
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y = -x;
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x = tmp;
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theta += ANGLE_PI2;
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}
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while (theta > ANGLE_PI4) {
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auto tmp = -v.y;
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v.y = v.x;
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v.x = tmp;
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auto tmp = -y;
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y = x;
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x = tmp;
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theta -= ANGLE_PI2;
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}
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@ -163,19 +164,19 @@ static void _rotate(SwPoint& pt, SwFixed theta)
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for (i = 1, j = 1; i < ATAN_MAX; j <<= 1, ++i) {
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if (theta < 0) {
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auto tmp = v.x + ((v.y + j) >> i);
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v.y = v.y - ((v.x + j) >> i);
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v.x = tmp;
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auto tmp = x + ((y + j) >> i);
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y = y - ((x + j) >> i);
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x = tmp;
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theta += *atan++;
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}else {
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auto tmp = v.x - ((v.y + j) >> i);
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v.y = v.y + ((v.x + j) >> i);
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v.x = tmp;
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auto tmp = x - ((y + j) >> i);
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y = y + ((x + j) >> i);
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x = tmp;
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theta -= *atan++;
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}
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}
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pt = v;
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pt = {x, y};
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}
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@ -305,9 +306,9 @@ void mathRotate(SwPoint& pt, SwFixed angle)
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auto v = pt;
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auto shift = _normalize(v);
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auto theta = angle;
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_rotate(v, theta);
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auto theta = angle;
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_rotate(v, theta);
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v.x = _downscale(v.x);
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v.y = _downscale(v.y);
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@ -82,16 +82,16 @@ bool SwRenderer::dispose(const Shape& shape, void *data)
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return true;
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}
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void* SwRenderer::prepare(const Shape& shape, void* data, const RenderTransform* transform, RenderUpdateFlag flags)
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void* SwRenderer::prepare(const Shape& sdata, void* data, const RenderTransform* transform, RenderUpdateFlag flags)
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{
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//prepare shape data
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SwShape* sdata = static_cast<SwShape*>(data);
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if (!sdata) {
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sdata = static_cast<SwShape*>(calloc(1, sizeof(SwShape)));
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assert(sdata);
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auto shape = static_cast<SwShape*>(data);
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if (!shape) {
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shape = static_cast<SwShape*>(calloc(1, sizeof(SwShape)));
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assert(shape);
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}
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if (flags == RenderUpdateFlag::None) return sdata;
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if (flags == RenderUpdateFlag::None) return shape;
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//TODO: Threading
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@ -99,34 +99,29 @@ void* SwRenderer::prepare(const Shape& shape, void* data, const RenderTransform*
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//Shape
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if (flags & (RenderUpdateFlag::Path | RenderUpdateFlag::Transform)) {
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shapeReset(*shape);
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uint8_t alpha = 0;
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shape.fill(nullptr, nullptr, nullptr, &alpha);
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sdata.fill(nullptr, nullptr, nullptr, &alpha);
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if (alpha > 0) {
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shapeReset(*sdata);
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if (!shapeGenOutline(shape, *sdata)) return sdata;
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if (transform) shapeTransformOutline(shape, *sdata, *transform);
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if (!shapeGenRle(shape, *sdata, clip)) return sdata;
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if (!shapeGenRle(*shape, sdata, clip, transform)) return shape;
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}
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}
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//Stroke
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if (flags & (RenderUpdateFlag::Stroke | RenderUpdateFlag::Transform)) {
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if (shape.strokeWidth() > 0.5) {
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shapeResetStroke(shape, *sdata);
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if (sdata.strokeWidth() > 0.5) {
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shapeResetStroke(*shape, sdata);
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uint8_t alpha = 0;
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shape.strokeColor(nullptr, nullptr, nullptr, &alpha);
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sdata.strokeColor(nullptr, nullptr, nullptr, &alpha);
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if (alpha > 0) {
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if (!shapeGenStrokeRle(shape, *sdata, clip)) return sdata;
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if (!shapeGenStrokeRle(*shape, sdata, clip)) return shape;
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}
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}
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}
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shapeDelOutline(*sdata);
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shapeDelOutline(*shape);
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return sdata;
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return shape;
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}
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@ -159,4 +154,4 @@ SwRenderer* SwRenderer::inst()
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return dynamic_cast<SwRenderer*>(RenderInitializer::inst(renderInit));
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}
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#endif /* _TVG_SW_RENDERER_CPP_ */
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#endif /* _TVG_SW_RENDERER_CPP_ */
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@ -23,48 +23,164 @@
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/* Internal Class Implementation */
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/************************************************************************/
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struct Line
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{
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Point pt1;
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Point pt2;
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};
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struct Bezier
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{
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Point start;
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Point ctrl1;
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Point ctrl2;
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Point end;
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};
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static float _lineLength(const Point& pt1, const Point& pt2)
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{
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/* approximate sqrt(x*x + y*y) using alpha max plus beta min algorithm.
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With alpha = 1, beta = 3/8, giving results with the largest error less
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than 7% compared to the exact value. */
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Point diff = {pt2.x - pt1.x, pt2.y - pt1.y};
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if (diff.x < 0) diff.x = -diff.x;
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if (diff.y < 0) diff.y = -diff.y;
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return (diff.x > diff.y) ? (diff.x + diff.y * 0.375f) : (diff.y + diff.x * 0.375f);
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}
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static void _lineSplitAt(const Line& cur, float at, Line& left, Line& right)
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{
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auto len = _lineLength(cur.pt1, cur.pt2);
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auto dx = ((cur.pt2.x - cur.pt1.x) / len) * at;
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auto dy = ((cur.pt2.y - cur.pt1.y) / len) * at;
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left.pt1 = cur.pt1;
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left.pt2.x = left.pt1.x + dx;
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left.pt2.y = left.pt1.y + dy;
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right.pt1 = left.pt2;
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right.pt2 = cur.pt2;
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}
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static void _bezSplit(const Bezier&cur, Bezier& left, Bezier& right)
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{
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auto c = (cur.ctrl1.x + cur.ctrl2.x) * 0.5f;
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left.ctrl1.x = (cur.start.x + cur.ctrl1.x) * 0.5f;
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right.ctrl2.x = (cur.ctrl2.x + cur.end.x) * 0.5f;
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left.start.x = cur.start.x;
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right.end.x = cur.end.x;
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left.ctrl2.x = (left.ctrl1.x + c) * 0.5f;
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right.ctrl1.x = (right.ctrl2.x + c) * 0.5f;
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left.end.x = right.start.x = (left.ctrl2.x + right.ctrl1.x) * 0.5f;
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c = (cur.ctrl1.y + cur.ctrl2.y) * 0.5f;
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left.ctrl1.y = (cur.start.y + cur.ctrl1.y) * 0.5f;
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right.ctrl2.y = (cur.ctrl2.y + cur.end.y) * 0.5f;
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left.start.y = cur.start.y;
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right.end.y = cur.end.y;
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left.ctrl2.y = (left.ctrl1.y + c) * 0.5f;
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right.ctrl1.y = (right.ctrl2.y + c) * 0.5f;
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left.end.y = right.start.y = (left.ctrl2.y + right.ctrl1.y) * 0.5f;
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}
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static float _bezLength(const Bezier& cur)
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{
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Bezier left, right;
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auto len = _lineLength(cur.start, cur.ctrl1) + _lineLength(cur.ctrl1, cur.ctrl2) + _lineLength(cur.ctrl2, cur.end);
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auto chord = _lineLength(cur.start, cur.end);
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if (fabs(len - chord) > FLT_EPSILON) {
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_bezSplit(cur, left, right);
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return _bezLength(left) + _bezLength(right);
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}
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return len;
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}
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static void _bezSplitLeft(Bezier& cur, float at, Bezier& left)
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{
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left.start = cur.start;
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left.ctrl1.x = cur.start.x + at * (cur.ctrl1.x - cur.start.x);
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left.ctrl1.y = cur.start.y + at * (cur.ctrl1.y - cur.start.y);
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left.ctrl2.x = cur.ctrl1.x + at * (cur.ctrl2.x - cur.ctrl1.x); // temporary holding spot
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left.ctrl2.y = cur.ctrl1.y + at * (cur.ctrl2.y - cur.ctrl1.y); // temporary holding spot
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cur.ctrl2.x = cur.ctrl2.x + at * (cur.end.x - cur.ctrl2.x);
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cur.ctrl2.y = cur.ctrl2.y + at * (cur.end.y - cur.ctrl2.y);
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cur.ctrl1.x = left.ctrl2.x + at * (cur.ctrl2.x - left.ctrl2.x);
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cur.ctrl1.y = left.ctrl2.y + at * (cur.ctrl2.y - left.ctrl2.y);
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left.ctrl2.x = left.ctrl1.x + at * (left.ctrl2.x - left.ctrl1.x);
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left.ctrl2.y = left.ctrl1.y + at * (left.ctrl2.y - left.ctrl1.y);
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left.end.x = cur.start.x = left.ctrl2.x + at * (cur.ctrl1.x - left.ctrl2.x);
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left.end.y = cur.start.y = left.ctrl2.y + at * (cur.ctrl1.y - left.ctrl2.y);
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}
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static float _bezAt(const Bezier& bz, float at)
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{
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auto len = _bezLength(bz);
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auto biggest = 1.0f;
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if (at >= len) return 1.0f;
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at *= 0.5f;
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while (true) {
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auto right = bz;
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Bezier left;
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_bezSplitLeft(right, at, left);
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auto len2 = _bezLength(left);
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if (fabs(len2 - len) < FLT_EPSILON) break;
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if (len2 < len) {
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at += (biggest - at) * 0.5f;
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} else {
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biggest = at;
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at -= (at * 0.5f);
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}
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}
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return at;
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}
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static void _bezSplitAt(const Bezier& cur, float at, Bezier& left, Bezier& right)
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{
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right = cur;
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auto t = _bezAt(right, at);
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_bezSplitLeft(right, t, left);
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}
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static void _growOutlineContour(SwOutline& outline, uint32_t n)
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{
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if (n == 0) {
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free(outline.cntrs);
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outline.cntrs = nullptr;
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outline.cntrsCnt = 0;
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outline.reservedCntrsCnt = 0;
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return;
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}
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if (outline.reservedCntrsCnt >= outline.cntrsCnt + n) return;
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//cout << "Grow Cntrs: " << outline.reservedCntrsCnt << " -> " << outline.cntrsCnt + n << endl;;
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outline.reservedCntrsCnt = n;
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outline.cntrs = static_cast<uint32_t*>(realloc(outline.cntrs, n * sizeof(uint32_t)));
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outline.reservedCntrsCnt = outline.cntrsCnt + n;
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outline.cntrs = static_cast<uint32_t*>(realloc(outline.cntrs, outline.reservedCntrsCnt * sizeof(uint32_t)));
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assert(outline.cntrs);
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}
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static void _growOutlinePoint(SwOutline& outline, uint32_t n)
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{
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if (n == 0) {
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free(outline.pts);
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outline.pts = nullptr;
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free(outline.types);
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outline.types = nullptr;
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outline.reservedPtsCnt = 0;
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outline.ptsCnt = 0;
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return;
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}
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if (outline.reservedPtsCnt >= outline.ptsCnt + n) return;
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//cout << "Grow Pts: " << outline.reservedPtsCnt << " -> " << outline.ptsCnt + n << endl;
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outline.reservedPtsCnt = n;
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outline.pts = static_cast<SwPoint*>(realloc(outline.pts, n * sizeof(SwPoint)));
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outline.reservedPtsCnt = outline.ptsCnt + n;
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outline.pts = static_cast<SwPoint*>(realloc(outline.pts, outline.reservedPtsCnt * sizeof(SwPoint)));
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assert(outline.pts);
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outline.types = static_cast<uint8_t*>(realloc(outline.types, n * sizeof(uint8_t)));
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outline.types = static_cast<uint8_t*>(realloc(outline.types, outline.reservedPtsCnt * sizeof(uint8_t)));
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assert(outline.types);
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}
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static void _freeOutline(SwOutline* outline)
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static void _delOutline(SwOutline* outline)
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{
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if (!outline) return;
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@ -112,7 +228,6 @@ static void _outlineLineTo(SwOutline& outline, const Point* to)
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outline.pts[outline.ptsCnt] = TO_SWPOINT(to);
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outline.types[outline.ptsCnt] = SW_CURVE_TYPE_POINT;
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++outline.ptsCnt;
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}
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@ -208,80 +323,271 @@ static bool _updateBBox(SwOutline* outline, SwBBox& bbox)
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}
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static bool _checkValid(SwShape& sdata, const SwSize& clip)
|
||||
static bool _checkValid(const SwOutline* outline, const SwBBox& bbox, const SwSize& clip)
|
||||
{
|
||||
assert(sdata.outline);
|
||||
assert(outline);
|
||||
|
||||
if (sdata.outline->ptsCnt == 0 || sdata.outline->cntrsCnt <= 0) return false;
|
||||
if (outline->ptsCnt == 0 || outline->cntrsCnt <= 0) return false;
|
||||
|
||||
//Check boundary
|
||||
if ((sdata.bbox.min.x > clip.w || sdata.bbox.min.y > clip.h) ||
|
||||
(sdata.bbox.min.x + sdata.bbox.max.x < 0) ||
|
||||
(sdata.bbox.min.y + sdata.bbox.max.y < 0)) return false;
|
||||
if ((bbox.min.x > clip.w || bbox.min.y > clip.h) ||
|
||||
(bbox.min.x + bbox.max.x < 0) ||
|
||||
(bbox.min.y + bbox.max.y < 0)) return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
static void _transformOutline(SwOutline* outline, const RenderTransform* transform)
|
||||
{
|
||||
assert(outline);
|
||||
|
||||
if (!transform) return;
|
||||
|
||||
for(uint32_t i = 0; i < outline->ptsCnt; ++i) {
|
||||
auto dx = static_cast<float>(outline->pts[i].x >> 6);
|
||||
auto dy = static_cast<float>(outline->pts[i].y >> 6);
|
||||
auto tx = dx * transform->e11 + dy * transform->e12 + transform->e13;
|
||||
auto ty = dx * transform->e21 + dy * transform->e22 + transform->e23;
|
||||
auto pt = Point{tx + transform->e31, ty + transform->e32};
|
||||
outline->pts[i] = TO_SWPOINT(&pt);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void _dashLineTo(SwDashStroke& dash, const Point* to)
|
||||
{
|
||||
_growOutlinePoint(*dash.outline, dash.outline->ptsCnt >> 1);
|
||||
_growOutlineContour(*dash.outline, dash.outline->cntrsCnt >> 1);
|
||||
|
||||
Line cur = {dash.ptCur, *to};
|
||||
auto len = _lineLength(cur.pt1, cur.pt2);
|
||||
|
||||
if (len < dash.curLen) {
|
||||
dash.curLen -= len;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &dash.ptCur);
|
||||
_outlineLineTo(*dash.outline, to);
|
||||
}
|
||||
} else {
|
||||
while (len > dash.curLen) {
|
||||
len -= dash.curLen;
|
||||
Line left, right;
|
||||
_lineSplitAt(cur, dash.curLen, left, right);;
|
||||
dash.curIdx = (dash.curIdx + 1) % dash.cnt;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &left.pt1);
|
||||
_outlineLineTo(*dash.outline, &left.pt2);
|
||||
}
|
||||
dash.curLen = dash.pattern[dash.curIdx];
|
||||
dash.curOpGap = !dash.curOpGap;
|
||||
cur = right;
|
||||
dash.ptCur = cur.pt1;
|
||||
}
|
||||
//leftovers
|
||||
dash.curLen -= len;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &cur.pt1);
|
||||
_outlineLineTo(*dash.outline, &cur.pt2);
|
||||
}
|
||||
if (dash.curLen < 1) {
|
||||
//move to next dash
|
||||
dash.curIdx = (dash.curIdx + 1) % dash.cnt;
|
||||
dash.curLen = dash.pattern[dash.curIdx];
|
||||
dash.curOpGap = !dash.curOpGap;
|
||||
}
|
||||
}
|
||||
dash.ptCur = *to;
|
||||
}
|
||||
|
||||
|
||||
static void _dashCubicTo(SwDashStroke& dash, const Point* ctrl1, const Point* ctrl2, const Point* to)
|
||||
{
|
||||
_growOutlinePoint(*dash.outline, dash.outline->ptsCnt >> 1);
|
||||
_growOutlineContour(*dash.outline, dash.outline->cntrsCnt >> 1);
|
||||
|
||||
Bezier cur = { dash.ptCur, *ctrl1, *ctrl2, *to};
|
||||
auto len = _bezLength(cur);
|
||||
|
||||
if (len < dash.curLen) {
|
||||
dash.curLen -= len;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &dash.ptCur);
|
||||
_outlineCubicTo(*dash.outline, ctrl1, ctrl2, to);
|
||||
}
|
||||
} else {
|
||||
while (len > dash.curLen) {
|
||||
Bezier left, right;
|
||||
len -= dash.curLen;
|
||||
_bezSplitAt(cur, dash.curLen, left, right);
|
||||
dash.curIdx = (dash.curIdx + 1) % dash.cnt;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &left.start);
|
||||
_outlineCubicTo(*dash.outline, &left.ctrl1, &left.ctrl2, &left.end);
|
||||
}
|
||||
dash.curLen = dash.pattern[dash.curIdx];
|
||||
dash.curOpGap = !dash.curOpGap;
|
||||
cur = right;
|
||||
dash.ptCur = right.start;
|
||||
}
|
||||
//leftovers
|
||||
dash.curLen -= len;
|
||||
if (!dash.curOpGap) {
|
||||
_outlineMoveTo(*dash.outline, &cur.start);
|
||||
_outlineCubicTo(*dash.outline, &cur.ctrl1, &cur.ctrl2, &cur.end);
|
||||
}
|
||||
if (dash.curLen < 1) {
|
||||
//move to next dash
|
||||
dash.curIdx = (dash.curIdx + 1) % dash.cnt;
|
||||
dash.curLen = dash.pattern[dash.curIdx];
|
||||
dash.curOpGap = !dash.curOpGap;
|
||||
}
|
||||
}
|
||||
dash.ptCur = *to;
|
||||
}
|
||||
|
||||
|
||||
SwOutline* _genDashOutline(const Shape& shape)
|
||||
{
|
||||
const PathCommand* cmds = nullptr;
|
||||
auto cmdCnt = shape.pathCommands(&cmds);
|
||||
|
||||
const Point* pts = nullptr;
|
||||
auto ptsCnt = shape.pathCoords(&pts);
|
||||
|
||||
//No actual shape data
|
||||
if (cmdCnt == 0 || ptsCnt == 0) return nullptr;
|
||||
|
||||
SwDashStroke dash;
|
||||
dash.curIdx = 0;
|
||||
dash.curLen = 0;
|
||||
dash.ptStart = {0, 0};
|
||||
dash.ptCur = {0, 0};
|
||||
dash.curOpGap = false;
|
||||
|
||||
const float* pattern;
|
||||
dash.cnt = shape.strokeDash(&pattern);
|
||||
assert(dash.cnt > 0 && pattern);
|
||||
|
||||
//Is it safe to mutual exclusive?
|
||||
dash.pattern = const_cast<float*>(pattern);
|
||||
dash.outline = static_cast<SwOutline*>(calloc(1, sizeof(SwOutline)));
|
||||
assert(dash.outline);
|
||||
dash.outline->opened = true;
|
||||
|
||||
//smart reservation
|
||||
auto outlinePtsCnt = 0;
|
||||
auto outlineCntrsCnt = 0;
|
||||
|
||||
for (uint32_t i = 0; i < cmdCnt; ++i) {
|
||||
switch(*(cmds + i)) {
|
||||
case PathCommand::Close: {
|
||||
++outlinePtsCnt;
|
||||
break;
|
||||
}
|
||||
case PathCommand::MoveTo: {
|
||||
++outlineCntrsCnt;
|
||||
++outlinePtsCnt;
|
||||
break;
|
||||
}
|
||||
case PathCommand::LineTo: {
|
||||
++outlinePtsCnt;
|
||||
break;
|
||||
}
|
||||
case PathCommand::CubicTo: {
|
||||
outlinePtsCnt += 3;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
++outlinePtsCnt; //for close
|
||||
++outlineCntrsCnt; //for end
|
||||
|
||||
//Reserve Approximitely 20x...
|
||||
_growOutlinePoint(*dash.outline, outlinePtsCnt * 20);
|
||||
_growOutlineContour(*dash.outline, outlineCntrsCnt * 20);
|
||||
|
||||
while (cmdCnt-- > 0) {
|
||||
switch(*cmds) {
|
||||
case PathCommand::Close: {
|
||||
_dashLineTo(dash, &dash.ptStart);
|
||||
break;
|
||||
}
|
||||
case PathCommand::MoveTo: {
|
||||
//reset the dash
|
||||
dash.curIdx = 0;
|
||||
dash.curLen = *dash.pattern;
|
||||
dash.curOpGap = false;
|
||||
dash.ptStart = dash.ptCur = *pts;
|
||||
++pts;
|
||||
break;
|
||||
}
|
||||
case PathCommand::LineTo: {
|
||||
_dashLineTo(dash, pts);
|
||||
++pts;
|
||||
break;
|
||||
}
|
||||
case PathCommand::CubicTo: {
|
||||
_dashCubicTo(dash, pts, pts + 1, pts + 2);
|
||||
pts += 3;
|
||||
break;
|
||||
}
|
||||
}
|
||||
++cmds;
|
||||
}
|
||||
|
||||
_outlineEnd(*dash.outline);
|
||||
|
||||
return dash.outline;
|
||||
}
|
||||
|
||||
|
||||
/************************************************************************/
|
||||
/* External Class Implementation */
|
||||
/************************************************************************/
|
||||
|
||||
void shapeTransformOutline(const Shape& shape, SwShape& sdata, const RenderTransform& transform)
|
||||
bool shapeGenRle(SwShape& shape, const Shape& sdata, const SwSize& clip, const RenderTransform* transform)
|
||||
{
|
||||
auto outline = sdata.outline;
|
||||
assert(outline);
|
||||
if (!shapeGenOutline(shape, sdata)) return false;
|
||||
|
||||
for(uint32_t i = 0; i < outline->ptsCnt; ++i) {
|
||||
auto dx = static_cast<float>(outline->pts[i].x >> 6);
|
||||
auto dy = static_cast<float>(outline->pts[i].y >> 6);
|
||||
auto tx = dx * transform.e11 + dy * transform.e12 + transform.e13;
|
||||
auto ty = dx * transform.e21 + dy * transform.e22 + transform.e23;
|
||||
auto pt = Point{tx + transform.e31, ty + transform.e32};
|
||||
outline->pts[i] = TO_SWPOINT(&pt);
|
||||
}
|
||||
}
|
||||
_transformOutline(shape.outline, transform);
|
||||
|
||||
if (!_updateBBox(shape.outline, shape.bbox)) goto end;
|
||||
|
||||
bool shapeGenRle(const Shape& shape, SwShape& sdata, const SwSize& clip)
|
||||
{
|
||||
/* OPTIMIZE ME: We may avoid this bounding box calculation in this stage
|
||||
if this shape has stroke and stroke bbox can be used here... */
|
||||
if (!_updateBBox(sdata.outline, sdata.bbox)) goto end;
|
||||
if (!_checkValid(sdata, clip)) goto end;
|
||||
|
||||
sdata.rle = rleRender(sdata.outline, sdata.bbox, clip);
|
||||
if (!_checkValid(shape.outline, shape.bbox, clip)) goto end;
|
||||
|
||||
shape.rle = rleRender(shape.outline, shape.bbox, clip);
|
||||
end:
|
||||
if (sdata.rle) return true;
|
||||
if (shape.rle) return true;
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
void shapeDelOutline(SwShape& sdata)
|
||||
void shapeDelOutline(SwShape& shape)
|
||||
{
|
||||
auto outline = sdata.outline;
|
||||
_freeOutline(outline);
|
||||
sdata.outline = nullptr;
|
||||
auto outline = shape.outline;
|
||||
_delOutline(outline);
|
||||
shape.outline = nullptr;
|
||||
}
|
||||
|
||||
|
||||
void shapeReset(SwShape& sdata)
|
||||
void shapeReset(SwShape& shape)
|
||||
{
|
||||
shapeDelOutline(sdata);
|
||||
rleFree(sdata.rle);
|
||||
sdata.rle = nullptr;
|
||||
_initBBox(sdata.bbox);
|
||||
shapeDelOutline(shape);
|
||||
rleFree(shape.rle);
|
||||
shape.rle = nullptr;
|
||||
_initBBox(shape.bbox);
|
||||
}
|
||||
|
||||
|
||||
bool shapeGenOutline(const Shape& shape, SwShape& sdata)
|
||||
bool shapeGenOutline(SwShape& shape, const Shape& sdata)
|
||||
{
|
||||
const PathCommand* cmds = nullptr;
|
||||
auto cmdCnt = shape.pathCommands(&cmds);
|
||||
auto cmdCnt = sdata.pathCommands(&cmds);
|
||||
|
||||
const Point* pts = nullptr;
|
||||
auto ptsCnt = shape.pathCoords(&pts);
|
||||
auto ptsCnt = sdata.pathCoords(&pts);
|
||||
|
||||
//No actual shape data
|
||||
if (cmdCnt == 0 || ptsCnt == 0) return false;
|
||||
|
|
@ -315,7 +621,7 @@ bool shapeGenOutline(const Shape& shape, SwShape& sdata)
|
|||
++outlinePtsCnt; //for close
|
||||
++outlineCntrsCnt; //for end
|
||||
|
||||
auto outline = sdata.outline;
|
||||
auto outline = shape.outline;
|
||||
if (!outline) outline = static_cast<SwOutline*>(calloc(1, sizeof(SwOutline)));
|
||||
assert(outline);
|
||||
outline->opened = true;
|
||||
|
|
@ -354,7 +660,7 @@ bool shapeGenOutline(const Shape& shape, SwShape& sdata)
|
|||
//FIXME:
|
||||
//outline->flags = SwOutline::FillRule::Winding;
|
||||
|
||||
sdata.outline = outline;
|
||||
shape.outline = outline;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
|
@ -376,38 +682,52 @@ void shapeFree(SwShape* sdata)
|
|||
}
|
||||
|
||||
|
||||
void shapeResetStroke(const Shape& shape, SwShape& sdata)
|
||||
void shapeResetStroke(SwShape& shape, const Shape& sdata)
|
||||
{
|
||||
if (!sdata.stroke) sdata.stroke = static_cast<SwStroke*>(calloc(1, sizeof(SwStroke)));
|
||||
auto stroke = sdata.stroke;
|
||||
if (!shape.stroke) shape.stroke = static_cast<SwStroke*>(calloc(1, sizeof(SwStroke)));
|
||||
auto stroke = shape.stroke;
|
||||
assert(stroke);
|
||||
strokeReset(*stroke, shape.strokeWidth(), shape.strokeCap(), shape.strokeJoin());
|
||||
rleFree(sdata.strokeRle);
|
||||
sdata.strokeRle = nullptr;
|
||||
|
||||
strokeReset(*stroke, sdata);
|
||||
|
||||
rleFree(shape.strokeRle);
|
||||
shape.strokeRle = nullptr;
|
||||
}
|
||||
|
||||
|
||||
bool shapeGenStrokeRle(const Shape& shape, SwShape& sdata, const SwSize& clip)
|
||||
bool shapeGenStrokeRle(SwShape& shape, const Shape& sdata, const SwSize& clip)
|
||||
{
|
||||
if (!sdata.outline) {
|
||||
if (!shapeGenOutline(shape, sdata)) return false;
|
||||
SwOutline* shapeOutline = nullptr;
|
||||
|
||||
//Dash Style Stroke
|
||||
if (sdata.strokeDash(nullptr) > 0) {
|
||||
shapeOutline = _genDashOutline(sdata);
|
||||
if (!shapeOutline) return false;
|
||||
|
||||
//Normal Style stroke
|
||||
} else {
|
||||
if (!shape.outline) {
|
||||
if (!shapeGenOutline(shape, sdata)) return false;
|
||||
}
|
||||
shapeOutline = shape.outline;
|
||||
}
|
||||
|
||||
if (!_checkValid(sdata, clip)) return false;
|
||||
if (!strokeParseOutline(*shape.stroke, *shapeOutline)) return false;
|
||||
|
||||
if (!strokeParseOutline(*sdata.stroke, *sdata.outline)) return false;
|
||||
|
||||
auto outline = strokeExportOutline(*sdata.stroke);
|
||||
if (!outline) return false;
|
||||
auto strokeOutline = strokeExportOutline(*shape.stroke);
|
||||
if (!strokeOutline) return false;
|
||||
|
||||
SwBBox bbox;
|
||||
_updateBBox(outline, bbox);
|
||||
_updateBBox(strokeOutline, bbox);
|
||||
|
||||
sdata.strokeRle = rleRender(outline, bbox, clip);
|
||||
if (!_checkValid(strokeOutline, bbox, clip)) return false;
|
||||
|
||||
_freeOutline(outline);
|
||||
shape.strokeRle = rleRender(strokeOutline, bbox, clip);
|
||||
|
||||
_delOutline(strokeOutline);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
#endif /* _TVG_SW_SHAPE_H_ */
|
||||
|
|
|
|||
|
|
@ -351,7 +351,7 @@ void _processCorner(SwStroke& stroke, SwFixed lineLength)
|
|||
}
|
||||
|
||||
|
||||
void _subPathStart(SwStroke& stroke, SwFixed startAngle, SwFixed lineLength)
|
||||
void _firstSubPath(SwStroke& stroke, SwFixed startAngle, SwFixed lineLength)
|
||||
{
|
||||
SwPoint delta = {stroke.width, 0};
|
||||
mathRotate(delta, startAngle + ANGLE_PI2);
|
||||
|
|
@ -390,7 +390,7 @@ static void _lineTo(SwStroke& stroke, const SwPoint& to)
|
|||
if (stroke.firstPt) {
|
||||
/* This is the first segment of a subpath. We need to add a point to each border
|
||||
at their respective starting point locations. */
|
||||
_subPathStart(stroke, angle, lineLength);
|
||||
_firstSubPath(stroke, angle, lineLength);
|
||||
} else {
|
||||
//process the current corner
|
||||
stroke.angleOut = angle;
|
||||
|
|
@ -455,7 +455,7 @@ static void _cubicTo(SwStroke& stroke, const SwPoint& ctrl1, const SwPoint& ctrl
|
|||
firstArc = false;
|
||||
//process corner if necessary
|
||||
if (stroke.firstPt) {
|
||||
_subPathStart(stroke, angleIn, 0);
|
||||
_firstSubPath(stroke, angleIn, 0);
|
||||
} else {
|
||||
stroke.angleOut = angleIn;
|
||||
_processCorner(stroke, 0);
|
||||
|
|
@ -566,7 +566,6 @@ static void _addCap(SwStroke& stroke, SwFixed angle, int32_t side)
|
|||
|
||||
SwPoint delta2 = {stroke.width, 0};
|
||||
mathRotate(delta2, angle + rotate);
|
||||
|
||||
delta += stroke.center + delta2;
|
||||
|
||||
_borderLineTo(border, delta, false);
|
||||
|
|
@ -660,26 +659,26 @@ static void _beginSubPath(SwStroke& stroke, SwPoint& to, bool opened)
|
|||
|
||||
stroke.firstPt = true;
|
||||
stroke.center = to;
|
||||
stroke.subPathOpen = opened;
|
||||
stroke.openSubPath = opened;
|
||||
|
||||
/* Determine if we need to check whether the border radius is greater
|
||||
than the radius of curvature of a curve, to handle this case specially.
|
||||
This is only required if bevel joins or butt caps may be created because
|
||||
round & miter joins and round & square caps cover the nagative sector
|
||||
created with wide strokes. */
|
||||
if ((stroke.join != StrokeJoin::Round) || (stroke.subPathOpen && stroke.cap == StrokeCap::Butt))
|
||||
if ((stroke.join != StrokeJoin::Round) || (stroke.openSubPath && stroke.cap == StrokeCap::Butt))
|
||||
stroke.handleWideStrokes = true;
|
||||
else
|
||||
stroke.handleWideStrokes = false;
|
||||
|
||||
stroke.subPathStart = to;
|
||||
stroke.ptStartSubPath = to;
|
||||
stroke.angleIn = 0;
|
||||
}
|
||||
|
||||
|
||||
static void _endSubPath(SwStroke& stroke)
|
||||
{
|
||||
if (stroke.subPathOpen) {
|
||||
if (stroke.openSubPath) {
|
||||
auto right = stroke.borders;
|
||||
assert(right);
|
||||
|
||||
|
|
@ -692,7 +691,7 @@ static void _endSubPath(SwStroke& stroke)
|
|||
_addReverseLeft(stroke, true);
|
||||
|
||||
//now add the final cap
|
||||
stroke.center = stroke.subPathStart;
|
||||
stroke.center = stroke.ptStartSubPath;
|
||||
_addCap(stroke, stroke.subPathAngle + ANGLE_PI, 0);
|
||||
|
||||
/* now end the right subpath accordingly. The left one is rewind
|
||||
|
|
@ -701,8 +700,8 @@ static void _endSubPath(SwStroke& stroke)
|
|||
} else {
|
||||
|
||||
//close the path if needed
|
||||
if (stroke.center != stroke.subPathStart)
|
||||
_lineTo(stroke, stroke.subPathStart);
|
||||
if (stroke.center != stroke.ptStartSubPath)
|
||||
_lineTo(stroke, stroke.ptStartSubPath);
|
||||
|
||||
//process the corner
|
||||
stroke.angleOut = stroke.subPathAngle;
|
||||
|
|
@ -792,7 +791,6 @@ static void _exportBorderOutline(SwStroke& stroke, SwOutline* outline, uint32_t
|
|||
++cntrs;
|
||||
++outline->cntrsCnt;
|
||||
}
|
||||
|
||||
++src;
|
||||
++tags;
|
||||
++idx;
|
||||
|
|
@ -820,13 +818,13 @@ void strokeFree(SwStroke* stroke)
|
|||
}
|
||||
|
||||
|
||||
void strokeReset(SwStroke& stroke, float width, StrokeCap cap, StrokeJoin join)
|
||||
void strokeReset(SwStroke& stroke, const Shape& shape)
|
||||
{
|
||||
stroke.width = TO_SWCOORD(width * 0.5);
|
||||
stroke.cap = cap;
|
||||
stroke.width = TO_SWCOORD(shape.strokeWidth() * 0.5);
|
||||
stroke.cap = shape.strokeCap();
|
||||
|
||||
//Save line join: it can be temporarily changed when stroking curves...
|
||||
stroke.joinSaved = stroke.join = join;
|
||||
stroke.joinSaved = stroke.join = shape.strokeJoin();
|
||||
|
||||
stroke.borders[0].ptsCnt = 0;
|
||||
stroke.borders[0].start = -1;
|
||||
|
|
@ -838,7 +836,7 @@ void strokeReset(SwStroke& stroke, float width, StrokeCap cap, StrokeJoin join)
|
|||
}
|
||||
|
||||
|
||||
bool strokeParseOutline(SwStroke& stroke, SwOutline& outline)
|
||||
bool strokeParseOutline(SwStroke& stroke, const SwOutline& outline)
|
||||
{
|
||||
uint32_t first = 0;
|
||||
|
||||
|
|
@ -926,5 +924,4 @@ SwOutline* strokeExportOutline(SwStroke& stroke)
|
|||
return outline;
|
||||
}
|
||||
|
||||
|
||||
#endif /* _TVG_SW_STROKER_H_ */
|
||||
|
|
|
|||
|
|
@ -328,7 +328,7 @@ int Shape::strokeColor(uint8_t* r, uint8_t* g, uint8_t* b, uint8_t* a) const noe
|
|||
}
|
||||
|
||||
|
||||
int Shape::stroke(const size_t* dashPattern, size_t cnt) noexcept
|
||||
int Shape::stroke(const float* dashPattern, size_t cnt) noexcept
|
||||
{
|
||||
if (cnt < 2 || !dashPattern) return -1;
|
||||
|
||||
|
|
@ -341,7 +341,7 @@ int Shape::stroke(const size_t* dashPattern, size_t cnt) noexcept
|
|||
}
|
||||
|
||||
|
||||
size_t Shape::strokeDash(const size_t** dashPattern) const noexcept
|
||||
size_t Shape::strokeDash(const float** dashPattern) const noexcept
|
||||
{
|
||||
auto impl = pImpl.get();
|
||||
assert(impl);
|
||||
|
|
|
|||
|
|
@ -32,7 +32,7 @@ struct ShapeStroke
|
|||
{
|
||||
float width = 0;
|
||||
uint8_t color[4] = {0, 0, 0, 0};
|
||||
size_t* dashPattern = nullptr;
|
||||
float* dashPattern = nullptr;
|
||||
size_t dashCnt = 0;
|
||||
StrokeCap cap = StrokeCap::Square;
|
||||
StrokeJoin join = StrokeJoin::Bevel;
|
||||
|
|
@ -203,7 +203,7 @@ struct Shape::Impl
|
|||
return 0;
|
||||
}
|
||||
|
||||
bool strokeDash(const size_t* pattern, size_t cnt)
|
||||
bool strokeDash(const float* pattern, size_t cnt)
|
||||
{
|
||||
assert(pattern);
|
||||
|
||||
|
|
@ -215,12 +215,13 @@ struct Shape::Impl
|
|||
stroke->dashPattern = nullptr;
|
||||
}
|
||||
|
||||
if (!stroke->dashPattern) stroke->dashPattern = static_cast<size_t*>(malloc(sizeof(size_t) * cnt));
|
||||
if (!stroke->dashPattern) stroke->dashPattern = static_cast<float*>(malloc(sizeof(float) * cnt));
|
||||
assert(stroke->dashPattern);
|
||||
|
||||
memcpy(stroke->dashPattern, pattern, cnt);
|
||||
stroke->dashCnt = cnt;
|
||||
for (size_t i = 0; i < cnt; ++i)
|
||||
stroke->dashPattern[i] = pattern[i];
|
||||
|
||||
stroke->dashCnt = cnt;
|
||||
flag |= RenderUpdateFlag::Stroke;
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@ void tvgtest()
|
|||
auto canvas = tvg::SwCanvas::gen();
|
||||
canvas->target(buffer, WIDTH, WIDTH, HEIGHT);
|
||||
|
||||
//Test for Stroke Width
|
||||
for (int i = 0; i < 10; ++i) {
|
||||
auto shape = tvg::Shape::gen();
|
||||
shape->moveTo(50, 50 + (25 * i));
|
||||
|
|
@ -27,6 +28,8 @@ void tvgtest()
|
|||
canvas->push(move(shape));
|
||||
}
|
||||
|
||||
|
||||
//Test for StrokeJoin & StrokeCap
|
||||
auto shape1 = tvg::Shape::gen();
|
||||
shape1->moveTo(20, 350);
|
||||
shape1->lineTo(250, 350);
|
||||
|
|
@ -63,6 +66,52 @@ void tvgtest()
|
|||
shape3->stroke(tvg::StrokeCap::Butt);
|
||||
canvas->push(move(shape3));
|
||||
|
||||
//Test for Stroke Dash
|
||||
auto shape4 = tvg::Shape::gen();
|
||||
shape4->moveTo(20, 600);
|
||||
shape4->lineTo(250, 600);
|
||||
shape4->lineTo(220, 750);
|
||||
shape4->lineTo(70, 720);
|
||||
shape4->lineTo(70, 580);
|
||||
shape4->stroke(255, 0, 0, 255);
|
||||
shape4->stroke(5);
|
||||
shape4->stroke(tvg::StrokeJoin::Round);
|
||||
shape4->stroke(tvg::StrokeCap::Round);
|
||||
|
||||
float dashPattern1[2] = {10, 10};
|
||||
shape4->stroke(dashPattern1, 2);
|
||||
canvas->push(move(shape4));
|
||||
|
||||
auto shape5 = tvg::Shape::gen();
|
||||
shape5->moveTo(270, 600);
|
||||
shape5->lineTo(500, 600);
|
||||
shape5->lineTo(470, 750);
|
||||
shape5->lineTo(320, 720);
|
||||
shape5->lineTo(320, 580);
|
||||
shape5->stroke(255, 255, 0, 255);
|
||||
shape5->stroke(5);
|
||||
shape5->stroke(tvg::StrokeJoin::Bevel);
|
||||
shape5->stroke(tvg::StrokeCap::Butt);
|
||||
|
||||
float dashPattern2[4] = {10, 10};
|
||||
shape5->stroke(dashPattern2, 4);
|
||||
canvas->push(move(shape5));
|
||||
|
||||
auto shape6 = tvg::Shape::gen();
|
||||
shape6->moveTo(520, 600);
|
||||
shape6->lineTo(750, 600);
|
||||
shape6->lineTo(720, 750);
|
||||
shape6->lineTo(570, 720);
|
||||
shape6->lineTo(570, 580);
|
||||
shape6->stroke(255, 255, 255, 255);
|
||||
shape6->stroke(5);
|
||||
shape6->stroke(tvg::StrokeJoin::Miter);
|
||||
shape6->stroke(tvg::StrokeCap::Square);
|
||||
|
||||
float dashPattern3[2] = {10, 10};
|
||||
shape6->stroke(dashPattern3, 2);
|
||||
canvas->push(move(shape6));
|
||||
|
||||
canvas->draw();
|
||||
canvas->sync();
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue