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feat: godot-engine-source-4.3-stable

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Jan van der Weide 2025-01-17 16:36:38 +01:00
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engine/thirdparty/thorvg/src/renderer/sw_engine/tvgSwImage.cpp vendored Normal file
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/*
* Copyright (c) 2020 - 2024 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "tvgMath.h"
#include "tvgSwCommon.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
static inline bool _onlyShifted(const Matrix* m)
{
if (mathEqual(m->e11, 1.0f) && mathEqual(m->e22, 1.0f) && mathZero(m->e12) && mathZero(m->e21)) return true;
return false;
}
static bool _genOutline(SwImage* image, const RenderMesh* mesh, const Matrix* transform, SwMpool* mpool, unsigned tid)
{
image->outline = mpoolReqOutline(mpool, tid);
auto outline = image->outline;
outline->pts.reserve(5);
outline->types.reserve(5);
outline->cntrs.reserve(1);
outline->closed.reserve(1);
Point to[4];
if (mesh->triangleCnt > 0) {
// TODO: Optimise me. We appear to calculate this exact min/max bounding area in multiple
// places. We should be able to re-use one we have already done? Also see:
// tvgPicture.h --> bounds
// tvgSwRasterTexmap.h --> _rasterTexmapPolygonMesh
//
// TODO: Should we calculate the exact path(s) of the triangle mesh instead?
// i.e. copy tvgSwShape.capp -> _genOutline?
//
// TODO: Cntrs?
auto triangles = mesh->triangles;
auto min = triangles[0].vertex[0].pt;
auto max = triangles[0].vertex[0].pt;
for (uint32_t i = 0; i < mesh->triangleCnt; ++i) {
if (triangles[i].vertex[0].pt.x < min.x) min.x = triangles[i].vertex[0].pt.x;
else if (triangles[i].vertex[0].pt.x > max.x) max.x = triangles[i].vertex[0].pt.x;
if (triangles[i].vertex[0].pt.y < min.y) min.y = triangles[i].vertex[0].pt.y;
else if (triangles[i].vertex[0].pt.y > max.y) max.y = triangles[i].vertex[0].pt.y;
if (triangles[i].vertex[1].pt.x < min.x) min.x = triangles[i].vertex[1].pt.x;
else if (triangles[i].vertex[1].pt.x > max.x) max.x = triangles[i].vertex[1].pt.x;
if (triangles[i].vertex[1].pt.y < min.y) min.y = triangles[i].vertex[1].pt.y;
else if (triangles[i].vertex[1].pt.y > max.y) max.y = triangles[i].vertex[1].pt.y;
if (triangles[i].vertex[2].pt.x < min.x) min.x = triangles[i].vertex[2].pt.x;
else if (triangles[i].vertex[2].pt.x > max.x) max.x = triangles[i].vertex[2].pt.x;
if (triangles[i].vertex[2].pt.y < min.y) min.y = triangles[i].vertex[2].pt.y;
else if (triangles[i].vertex[2].pt.y > max.y) max.y = triangles[i].vertex[2].pt.y;
}
to[0] = {min.x, min.y};
to[1] = {max.x, min.y};
to[2] = {max.x, max.y};
to[3] = {min.x, max.y};
} else {
auto w = static_cast<float>(image->w);
auto h = static_cast<float>(image->h);
to[0] = {0, 0};
to[1] = {w, 0};
to[2] = {w, h};
to[3] = {0, h};
}
for (int i = 0; i < 4; i++) {
outline->pts.push(mathTransform(&to[i], transform));
outline->types.push(SW_CURVE_TYPE_POINT);
}
outline->pts.push(outline->pts[0]);
outline->types.push(SW_CURVE_TYPE_POINT);
outline->cntrs.push(outline->pts.count - 1);
outline->closed.push(true);
image->outline = outline;
return true;
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
bool imagePrepare(SwImage* image, const RenderMesh* mesh, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid)
{
image->direct = _onlyShifted(transform);
//Fast track: Non-transformed image but just shifted.
if (image->direct) {
image->ox = -static_cast<int32_t>(nearbyint(transform->e13));
image->oy = -static_cast<int32_t>(nearbyint(transform->e23));
//Figure out the scale factor by transform matrix
} else {
auto scaleX = sqrtf((transform->e11 * transform->e11) + (transform->e21 * transform->e21));
auto scaleY = sqrtf((transform->e22 * transform->e22) + (transform->e12 * transform->e12));
image->scale = (fabsf(scaleX - scaleY) > 0.01f) ? 1.0f : scaleX;
if (mathZero(transform->e12) && mathZero(transform->e21)) image->scaled = true;
else image->scaled = false;
}
if (!_genOutline(image, mesh, transform, mpool, tid)) return false;
return mathUpdateOutlineBBox(image->outline, clipRegion, renderRegion, image->direct);
}
bool imageGenRle(SwImage* image, const SwBBox& renderRegion, bool antiAlias)
{
if ((image->rle = rleRender(image->rle, image->outline, renderRegion, antiAlias))) return true;
return false;
}
void imageDelOutline(SwImage* image, SwMpool* mpool, uint32_t tid)
{
mpoolRetOutline(mpool, tid);
image->outline = nullptr;
}
void imageReset(SwImage* image)
{
rleReset(image->rle);
}
void imageFree(SwImage* image)
{
rleFree(image->rle);
}