| |
| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "SkRect.h" |
| |
| void SkIRect::join(int32_t left, int32_t top, int32_t right, int32_t bottom) { |
| // do nothing if the params are empty |
| if (left >= right || top >= bottom) { |
| return; |
| } |
| |
| // if we are empty, just assign |
| if (fLeft >= fRight || fTop >= fBottom) { |
| this->set(left, top, right, bottom); |
| } else { |
| if (left < fLeft) fLeft = left; |
| if (top < fTop) fTop = top; |
| if (right > fRight) fRight = right; |
| if (bottom > fBottom) fBottom = bottom; |
| } |
| } |
| |
| void SkIRect::sort() { |
| if (fLeft > fRight) { |
| SkTSwap<int32_t>(fLeft, fRight); |
| } |
| if (fTop > fBottom) { |
| SkTSwap<int32_t>(fTop, fBottom); |
| } |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| bool SkRect::hasValidCoordinates() const { |
| return SkScalarIsFinite(fLeft) && |
| SkScalarIsFinite(fTop) && |
| SkScalarIsFinite(fRight) && |
| SkScalarIsFinite(fBottom); |
| } |
| |
| void SkRect::sort() { |
| if (fLeft > fRight) { |
| SkTSwap<SkScalar>(fLeft, fRight); |
| } |
| if (fTop > fBottom) { |
| SkTSwap<SkScalar>(fTop, fBottom); |
| } |
| } |
| |
| void SkRect::toQuad(SkPoint quad[4]) const { |
| SkASSERT(quad); |
| |
| quad[0].set(fLeft, fTop); |
| quad[1].set(fRight, fTop); |
| quad[2].set(fRight, fBottom); |
| quad[3].set(fLeft, fBottom); |
| } |
| |
| void SkRect::set(const SkPoint pts[], int count) { |
| SkASSERT((pts && count > 0) || count == 0); |
| |
| if (count <= 0) { |
| sk_bzero(this, sizeof(SkRect)); |
| } else { |
| #ifdef SK_SCALAR_SLOW_COMPARES |
| int32_t l, t, r, b; |
| |
| l = r = SkScalarAs2sCompliment(pts[0].fX); |
| t = b = SkScalarAs2sCompliment(pts[0].fY); |
| |
| for (int i = 1; i < count; i++) { |
| int32_t x = SkScalarAs2sCompliment(pts[i].fX); |
| int32_t y = SkScalarAs2sCompliment(pts[i].fY); |
| |
| if (x < l) l = x; else if (x > r) r = x; |
| if (y < t) t = y; else if (y > b) b = y; |
| } |
| this->set(Sk2sComplimentAsScalar(l), |
| Sk2sComplimentAsScalar(t), |
| Sk2sComplimentAsScalar(r), |
| Sk2sComplimentAsScalar(b)); |
| #else |
| SkScalar l, t, r, b; |
| |
| l = r = pts[0].fX; |
| t = b = pts[0].fY; |
| |
| for (int i = 1; i < count; i++) { |
| SkScalar x = pts[i].fX; |
| SkScalar y = pts[i].fY; |
| |
| if (x < l) l = x; else if (x > r) r = x; |
| if (y < t) t = y; else if (y > b) b = y; |
| } |
| this->set(l, t, r, b); |
| #endif |
| } |
| } |
| |
| bool SkRect::intersect(SkScalar left, SkScalar top, SkScalar right, |
| SkScalar bottom) { |
| if (left < right && top < bottom && !this->isEmpty() && // check for empties |
| fLeft < right && left < fRight && fTop < bottom && top < fBottom) |
| { |
| if (fLeft < left) fLeft = left; |
| if (fTop < top) fTop = top; |
| if (fRight > right) fRight = right; |
| if (fBottom > bottom) fBottom = bottom; |
| return true; |
| } |
| return false; |
| } |
| |
| bool SkRect::intersect(const SkRect& r) { |
| SkASSERT(&r); |
| return this->intersect(r.fLeft, r.fTop, r.fRight, r.fBottom); |
| } |
| |
| void SkRect::join(SkScalar left, SkScalar top, SkScalar right, |
| SkScalar bottom) { |
| // do nothing if the params are empty |
| if (left >= right || top >= bottom) { |
| return; |
| } |
| |
| // if we are empty, just assign |
| if (fLeft >= fRight || fTop >= fBottom) { |
| this->set(left, top, right, bottom); |
| } else { |
| if (left < fLeft) fLeft = left; |
| if (top < fTop) fTop = top; |
| if (right > fRight) fRight = right; |
| if (bottom > fBottom) fBottom = bottom; |
| } |
| } |
| |