largeclippedpath.cpp File Reference

#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkPath.h"

Go to the source code of this file.

Functions
static void	draw_clipped_flower (SkCanvas *canvas, SkPathFillType fillType)
	DEF_SIMPLE_GM (largeclippedpath_winding, canvas, kSize, kSize)
	DEF_SIMPLE_GM (largeclippedpath_evenodd, canvas, kSize, kSize)

Variables
constexpr int	kSize = 1000

Function Documentation

DEF_SIMPLE_GM() [1/2]

DEF_SIMPLE_GM	(	largeclippedpath_evenodd	,
		canvas	,
		kSize	,
		kSize
	)

Definition at line 52 of file largeclippedpath.cpp.

                                                              {
    draw_clipped_flower(canvas, SkPathFillType::kEvenOdd);
}

DEF_SIMPLE_GM() [2/2]

DEF_SIMPLE_GM	(	largeclippedpath_winding	,
		canvas	,
		kSize	,
		kSize
	)

Definition at line 48 of file largeclippedpath.cpp.

                                                              {
    draw_clipped_flower(canvas, SkPathFillType::kWinding);
}

draw_clipped_flower()

static void draw_clipped_flower ( SkCanvas *  canvas, SkPathFillType  fillType  )

static

Definition at line 16 of file largeclippedpath.cpp.

                                                                           {
    canvas->clear(SK_ColorCYAN);
    SkPath clip;
    clip.setFillType(SkPathFillType::kWinding);
    constexpr static int kGridCount = 50;
    constexpr static float kCellSize = (float)kSize / kGridCount;
    for (int y = 0; y < kGridCount; ++y) {
        clip.addRect(0, y * kCellSize, kSize, (y + 1) * kCellSize, SkPathDirection(y & 1));
    }
    for (int x = 0; x < kGridCount; ++x) {
        clip.addRect(x * kCellSize, 0, (x + 1) * kCellSize, kSize, SkPathDirection(x & 1));
    }
    canvas->clipPath(clip);
    SkPath flower;
    flower.setFillType(fillType);
    flower.moveTo(1, 0);
    constexpr static int kNumPetals = 9;
    for (int i = 1; i <= kNumPetals; ++i) {
        float c = 2*SK_ScalarPI*(i - .5f) / kNumPetals;
        float theta = 2*SK_ScalarPI*i / kNumPetals;
        flower.quadTo(cosf(c)*2, sinf(c)*2, cosf(theta), sinf(theta));
    }
    flower.close();
    flower.addArc(SkRect::MakeLTRB(-.75f, -.75f, .75f, .75f), 0, 360);
    canvas->translate(kSize/2.f, kSize/2.f);
    canvas->scale(kSize/3.f, kSize/3.f);
    SkPaint p;
    p.setAntiAlias(true);
    p.setColor(SK_ColorMAGENTA);
    canvas->drawPath(flower, p);
}

Variable Documentation

kSize

constexpr int kSize = 1000

constexpr

Definition at line 12 of file largeclippedpath.cpp.