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-rw-r--r--samplecode/SamplePatch.cpp417
1 files changed, 0 insertions, 417 deletions
diff --git a/samplecode/SamplePatch.cpp b/samplecode/SamplePatch.cpp
deleted file mode 100644
index 77bd332..0000000
--- a/samplecode/SamplePatch.cpp
+++ /dev/null
@@ -1,417 +0,0 @@
-#include "SampleCode.h"
-#include "SkView.h"
-#include "SkCanvas.h"
-#include "SkGradientShader.h"
-#include "SkGraphics.h"
-#include "SkImageDecoder.h"
-#include "SkPath.h"
-#include "SkPorterDuff.h"
-#include "SkRandom.h"
-#include "SkRegion.h"
-#include "SkShader.h"
-#include "SkUtils.h"
-#include "SkXfermode.h"
-#include "SkColorPriv.h"
-#include "SkColorFilter.h"
-#include "SkTime.h"
-#include "SkTypeface.h"
-
-#include "SkImageRef.h"
-#include "SkOSFile.h"
-#include "SkStream.h"
-
-#include "SkGeometry.h" // private include :(
-
-static void drawtriangle(SkCanvas* canvas, const SkPaint& paint,
- const SkPoint pts[3]) {
- SkPath path;
-
- path.moveTo(pts[0]);
- path.lineTo(pts[1]);
- path.lineTo(pts[2]);
-
- canvas->drawPath(path, paint);
-}
-
-static SkShader* make_shader0(SkIPoint* size) {
- SkBitmap bm;
-
-// SkImageDecoder::DecodeFile("/skimages/progressivejpg.jpg", &bm);
- SkImageDecoder::DecodeFile("/skimages/beach.jpg", &bm);
- size->set(bm.width(), bm.height());
- return SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode,
- SkShader::kClamp_TileMode);
-}
-
-static SkShader* make_shader1(const SkIPoint& size) {
- SkPoint pts[] = { 0, 0, SkIntToScalar(size.fX), SkIntToScalar(size.fY) };
- SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED };
- return SkGradientShader::CreateLinear(pts, colors, NULL,
- SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode, NULL);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class Patch {
-public:
- Patch() { bzero(fPts, sizeof(fPts)); }
- ~Patch() {}
-
- void setPatch(const SkPoint pts[12]) {
- memcpy(fPts, pts, 12 * sizeof(SkPoint));
- fPts[12] = pts[0]; // the last shall be first
- }
- void setBounds(int w, int h) { fW = w; fH = h; }
-
- void draw(SkCanvas*, const SkPaint&, int segsU, int segsV,
- bool doTextures, bool doColors);
-
-private:
- SkPoint fPts[13];
- int fW, fH;
-};
-
-static void eval_patch_edge(const SkPoint cubic[], SkPoint samples[], int segs) {
- SkScalar t = 0;
- SkScalar dt = SK_Scalar1 / segs;
-
- samples[0] = cubic[0];
- for (int i = 1; i < segs; i++) {
- t += dt;
- SkEvalCubicAt(cubic, t, &samples[i], NULL, NULL);
- }
-}
-
-static void eval_sheet(const SkPoint edge[], int nu, int nv, int iu, int iv,
- SkPoint* pt) {
- const int TL = 0;
- const int TR = nu;
- const int BR = TR + nv;
- const int BL = BR + nu;
-
- SkScalar u = SkIntToScalar(iu) / nu;
- SkScalar v = SkIntToScalar(iv) / nv;
-
- SkScalar uv = SkScalarMul(u, v);
- SkScalar Uv = SkScalarMul(SK_Scalar1 - u, v);
- SkScalar uV = SkScalarMul(u, SK_Scalar1 - v);
- SkScalar UV = SkScalarMul(SK_Scalar1 - u, SK_Scalar1 - v);
-
- SkScalar x0 = SkScalarMul(UV, edge[TL].fX) + SkScalarMul(uV, edge[TR].fX) +
- SkScalarMul(Uv, edge[BL].fX) + SkScalarMul(uv, edge[BR].fX);
- SkScalar y0 = SkScalarMul(UV, edge[TL].fY) + SkScalarMul(uV, edge[TR].fY) +
- SkScalarMul(Uv, edge[BL].fY) + SkScalarMul(uv, edge[BR].fY);
-
- SkScalar x = SkScalarMul(SK_Scalar1 - v, edge[TL+iu].fX) +
- SkScalarMul(u, edge[TR+iv].fX) +
- SkScalarMul(v, edge[BR+nu-iu].fX) +
- SkScalarMul(SK_Scalar1 - u, edge[BL+nv-iv].fX) - x0;
- SkScalar y = SkScalarMul(SK_Scalar1 - v, edge[TL+iu].fY) +
- SkScalarMul(u, edge[TR+iv].fY) +
- SkScalarMul(v, edge[BR+nu-iu].fY) +
- SkScalarMul(SK_Scalar1 - u, edge[BL+nv-iv].fY) - y0;
- pt->set(x, y);
-}
-
-static int ScalarTo255(SkScalar v) {
- int scale = SkScalarToFixed(v) >> 8;
- if (scale < 0) {
- scale = 0;
- } else if (scale > 255) {
- scale = 255;
- }
- return scale;
-}
-
-static SkColor make_color(SkScalar s, SkScalar t) {
- int cs = ScalarTo255(s);
- int ct = ScalarTo255(t);
- return SkColorSetARGB(0xFF, cs, 0, 0) + SkColorSetARGB(0, 0, ct, 0);
-}
-
-void Patch::draw(SkCanvas* canvas, const SkPaint& paint, int nu, int nv,
- bool doTextures, bool doColors) {
- if (nu < 1 || nv < 1) {
- return;
- }
-
- int i, npts = (nu + nv) * 2;
- SkAutoSTMalloc<16, SkPoint> storage(npts + 1);
- SkPoint* edge0 = storage.get();
- SkPoint* edge1 = edge0 + nu;
- SkPoint* edge2 = edge1 + nv;
- SkPoint* edge3 = edge2 + nu;
-
- // evaluate the edge points
- eval_patch_edge(fPts + 0, edge0, nu);
- eval_patch_edge(fPts + 3, edge1, nv);
- eval_patch_edge(fPts + 6, edge2, nu);
- eval_patch_edge(fPts + 9, edge3, nv);
- edge3[nv] = edge0[0]; // the last shall be first
-
- for (i = 0; i < npts; i++) {
-// canvas->drawLine(edge0[i].fX, edge0[i].fY, edge0[i+1].fX, edge0[i+1].fY, paint);
- }
-
- int row, vertCount = (nu + 1) * (nv + 1);
- SkAutoTMalloc<SkPoint> vertStorage(vertCount);
- SkPoint* verts = vertStorage.get();
-
- // first row
- memcpy(verts, edge0, (nu + 1) * sizeof(SkPoint));
- // rows
- SkPoint* r = verts;
- for (row = 1; row < nv; row++) {
- r += nu + 1;
- r[0] = edge3[nv - row];
- for (int col = 1; col < nu; col++) {
- eval_sheet(edge0, nu, nv, col, row, &r[col]);
- }
- r[nu] = edge1[row];
- }
- // last row
- SkPoint* last = verts + nv * (nu + 1);
- for (i = 0; i <= nu; i++) {
- last[i] = edge2[nu - i];
- }
-
-// canvas->drawPoints(verts, vertCount, paint);
-
- int stripCount = (nu + 1) * 2;
- SkAutoTMalloc<SkPoint> stripStorage(stripCount * 2);
- SkAutoTMalloc<SkColor> colorStorage(stripCount);
- SkPoint* strip = stripStorage.get();
- SkPoint* tex = strip + stripCount;
- SkColor* colors = colorStorage.get();
- SkScalar t = 0;
- const SkScalar ds = SK_Scalar1 * fW / nu;
- const SkScalar dt = SK_Scalar1 * fH / nv;
- r = verts;
- for (row = 0; row < nv; row++) {
- SkPoint* upper = r;
- SkPoint* lower = r + nu + 1;
- r = lower;
- SkScalar s = 0;
- for (i = 0; i <= nu; i++) {
- strip[i*2 + 0] = *upper++;
- strip[i*2 + 1] = *lower++;
- tex[i*2 + 0].set(s, t);
- tex[i*2 + 1].set(s, t + dt);
- colors[i*2 + 0] = make_color(s/fW, t/fH);
- colors[i*2 + 1] = make_color(s/fW, (t + dt)/fH);
- s += ds;
- }
- t += dt;
- canvas->drawVertices(SkCanvas::kTriangleStrip_VertexMode, stripCount,
- strip, doTextures ? tex : NULL,
- doColors ? colors : NULL, NULL,
- NULL, 0, paint);
- }
-}
-
-static void drawpatches(SkCanvas* canvas, const SkPaint& paint, int nu, int nv,
- Patch* patch) {
-
- SkAutoCanvasRestore ar(canvas, true);
-
- patch->draw(canvas, paint, 10, 10, false, false);
- canvas->translate(SkIntToScalar(300), 0);
- patch->draw(canvas, paint, 10, 10, true, false);
- canvas->translate(SkIntToScalar(300), 0);
- patch->draw(canvas, paint, 10, 10, false, true);
- canvas->translate(SkIntToScalar(300), 0);
- patch->draw(canvas, paint, 10, 10, true, true);
-}
-
-class PatchView : public SkView {
- SkShader* fShader0;
- SkShader* fShader1;
- SkIPoint fSize0, fSize1;
- SkPoint fPts[12];
-
-public:
- PatchView() {
- fShader0 = make_shader0(&fSize0);
- fSize1 = fSize0;
- if (fSize0.fX == 0 || fSize0.fY == 0) {
- fSize1.set(2, 2);
- }
- fShader1 = make_shader1(fSize1);
-
- const SkScalar S = SkIntToScalar(90);
- const SkScalar T = SkIntToScalar(64);
- fPts[0].set(S*1, T);
- fPts[1].set(S*2, T);
- fPts[2].set(S*3, T);
- fPts[3].set(S*4, T);
- fPts[4].set(S*4, T*2);
- fPts[5].set(S*4, T*3);
- fPts[6].set(S*4, T*4);
- fPts[7].set(S*3, T*4);
- fPts[8].set(S*2, T*4);
- fPts[9].set(S*1, T*4);
- fPts[10].set(S*1, T*3);
- fPts[11].set(S*1, T*2);
- }
-
- virtual ~PatchView() {
- fShader0->safeUnref();
- fShader1->safeUnref();
- }
-
-protected:
- // overrides from SkEventSink
- virtual bool onQuery(SkEvent* evt) {
- if (SampleCode::TitleQ(*evt))
- {
- SkString str("Patch");
- SampleCode::TitleR(evt, str.c_str());
- return true;
- }
- return this->INHERITED::onQuery(evt);
- }
-
- void drawBG(SkCanvas* canvas) {
- canvas->drawColor(SK_ColorGRAY);
- }
-
- virtual void onDraw(SkCanvas* canvas) {
- this->drawBG(canvas);
-
- SkPaint paint;
- paint.setDither(true);
- paint.setFilterBitmap(true);
-
- if (false) {
- SkPath p;
- p.moveTo(0, 0);
- p.lineTo(SkIntToScalar(30000), SkIntToScalar(30000));
- paint.setStyle(SkPaint::kStroke_Style);
- paint.setStrokeWidth(SkIntToScalar(4));
- paint.setAntiAlias(true);
- canvas->scale(SkIntToScalar(3), SkIntToScalar(3));
- canvas->drawPath(p, paint);
- return;
- }
-
- if (false) {
- for (int dy = -1; dy <= 2; dy++) {
- canvas->save();
- if (dy == 2) {
- canvas->translate(0, SK_Scalar1/2);
- } else {
- canvas->translate(0, SkIntToScalar(dy)/100);
- }
-
- SkBitmap bm;
- bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20);
- bm.allocPixels();
- SkCanvas c(bm);
- SkRect r = { 0, 0, 20*SK_Scalar1, SK_Scalar1 };
- for (int y = 0; y < 20; y++) {
- SkPaint p;
- p.setARGB(0xFF, y*5&0xFF, y*13&0xFF, y*29&0xFF);
- c.drawRect(r, p);
- r.offset(0, SK_Scalar1);
- }
- SkIRect src;
- SkRect dst;
-
- static const int srcPts[] = {
- // 2, 0, 15, 2,
- 2, 2, 15, 16,
- 17, 2, 2, 16,
- 19, 2, 1, 16,
- // 2, 18, 15, 2
- };
- static const double dstPts[] = {
- // 7, 262 15, 24.5,
- 7, 286.5, 15, 16,
- 22, 286.5, 5, 16,
- 27, 286.5, 1, 16,
- // 7, 302.5, 15, 24.5
- };
-
- SkPaint p;
-// p.setFilterBitmap(true);
- const int* s = srcPts;
- const double* d = dstPts;
- for (int i = 0; i < 3; i++) {
- src.set(s[0], s[1], s[0]+s[2], s[1]+s[3]);
- dst.set(SkDoubleToScalar(d[0]),
- SkDoubleToScalar(d[1]),
- SkDoubleToScalar(d[0]+d[2]),
- SkDoubleToScalar(d[1]+d[3]));
- canvas->drawBitmapRect(bm, &src, dst, &p);
- canvas->translate(SkDoubleToScalar(1), 0);
- s += 4;
- d += 4;
- }
- canvas->restore();
- canvas->translate(SkIntToScalar(32), 0);
- }
- return;
- }
-
- Patch patch;
-
- paint.setShader(fShader0);
- if (fSize0.fX == 0) {
- fSize0.fX = 1;
- }
- if (fSize0.fY == 0) {
- fSize0.fY = 1;
- }
- patch.setBounds(fSize0.fX, fSize0.fY);
-
- patch.setPatch(fPts);
- drawpatches(canvas, paint, 10, 10, &patch);
-
- paint.setShader(NULL);
- paint.setAntiAlias(true);
- paint.setStrokeWidth(SkIntToScalar(5));
- canvas->drawPoints(SkCanvas::kPoints_PointMode, SK_ARRAY_COUNT(fPts),
- fPts, paint);
-
- canvas->translate(0, SkIntToScalar(300));
-
- paint.setAntiAlias(false);
- paint.setShader(fShader1);
- patch.setBounds(fSize1.fX, fSize1.fY);
- drawpatches(canvas, paint, 10, 10, &patch);
- }
-
- class PtClick : public Click {
- public:
- int fIndex;
- PtClick(SkView* view, int index) : Click(view), fIndex(index) {}
- };
-
- static bool hittest(const SkPoint& pt, SkScalar x, SkScalar y) {
- return SkPoint::Length(pt.fX - x, pt.fY - y) < SkIntToScalar(5);
- }
-
- virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
- for (int i = 0; i < SK_ARRAY_COUNT(fPts); i++) {
- if (hittest(fPts[i], x, y)) {
- return new PtClick(this, i);
- }
- }
- return this->INHERITED::onFindClickHandler(x, y);
- }
-
- virtual bool onClick(Click* click) {
- fPts[((PtClick*)click)->fIndex].set(click->fCurr.fX, click->fCurr.fY);
- this->inval(NULL);
- return true;
- }
-
-private:
- typedef SkView INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-static SkView* MyFactory() { return new PatchView; }
-static SkViewRegister reg(MyFactory);
-
generated by cgit v1.1 at 2024-12-22 14:32:51 +0000