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Resolve seam UV coords

master
Jeremy HU 2022-11-02 23:12:59 +11:00
parent 6d71e14b19
commit da7536ea8f
3 changed files with 43 additions and 5 deletions
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20
application/sources/uv_map_generator.cc
View File

@ -132,11 +132,29 @@ void UvMapGenerator::generateTextureColorImage()
colorTexturePainter.setPen(Qt::NoPen);
for (const auto& layout : m_mapPacker->packedLayouts()) {
const QImage* image = ImageForever::get(layout.id);
const QImage* image = nullptr;
std::unique_ptr<QImage> seamImage;
if (layout.isSeam) {
seamImage = std::make_unique<QImage>(layout.imageWidth, layout.imageHeight, QImage::Format_ARGB32);
seamImage->fill(Qt::red);
for (const auto& it : layout.uvCopyMap) {
const auto& sourceImageId = m_mapPacker->packedLayouts()[it.first].id;
const QImage* sourceImage = ImageForever::get(sourceImageId);
if (nullptr == sourceImage) {
dust3dDebug << "Find image failed:" << sourceImageId.toString();
continue;
}
// TODO: copy triangle UV from source to seam image
}
//dust3dDebug << "layout.imageWidth:" << layout.imageWidth << "layout.imageHeight:" << layout.imageHeight;
image = seamImage.get();
} else {
image = ImageForever::get(layout.id);
if (nullptr == image) {
dust3dDebug << "Find image failed:" << layout.id.toString();
continue;
}
}
QPixmap brushPixmap;
if (layout.flipped) {
auto scaledImage = image->scaled(QSize(layout.height * UvMapGenerator::m_textureSize,

16
dust3d/uv/uv_map_packer.cc
View File

@ -68,6 +68,7 @@ void UvMapPacker::resolveSeamUvs()
const auto& seam = m_seams[seamIndex];
double seamUvMapWidth = 0.0;
double seamUvMapHeight = 0.0;
std::unordered_map<size_t, std::array<std::array<Vector2, 3>, 2>> uvCopyMap;
for (const auto& triangle : seam) {
auto findUv = halfEdgeToUvMap.find({ triangle.first[0], triangle.first[1] });
if (findUv == halfEdgeToUvMap.end())
@ -76,10 +77,19 @@ void UvMapPacker::resolveSeamUvs()
const auto& part = m_partTriangleUvs[triangleUv.partIndex];
seamUvMapWidth += std::abs(triangleUv.uv[0].x() - triangleUv.uv[1].x()) * part.width;
seamUvMapHeight += std::abs(triangleUv.uv[0].y() - triangleUv.uv[1].y()) * part.height;
uvCopyMap.insert({ triangleUv.partIndex, { triangleUv.uv, triangle.second } });
}
if (uvCopyMap.empty())
continue;
Part newPart;
newPart.isSeam = true;
newPart.width = seamUvMapWidth;
newPart.height = seamUvMapHeight;
newPart.uvCopyMap = std::move(uvCopyMap);
newPart.localUv = seam;
m_partTriangleUvs.emplace_back(newPart);
// dust3dDebug << "Seam uv map size:" << seamUvMapWidth << seamUvMapHeight;
}
// TODO:
}
void UvMapPacker::pack()
@ -111,6 +121,10 @@ void UvMapPacker::pack()
//dust3dDebug << "left:" << left << "top:" << top << "width:" << width << "height:" << height << "flipped:" << flipped;
Layout layout;
layout.id = part.id;
layout.isSeam = part.isSeam;
layout.imageWidth = part.width;
layout.imageHeight = part.height;
layout.uvCopyMap = part.uvCopyMap;
layout.flipped = flipped;
if (flipped) {
layout.left = left;

6
dust3d/uv/uv_map_packer.h
View File

@ -28,6 +28,7 @@
#include <dust3d/base/uuid.h>
#include <dust3d/base/vector2.h>
#include <map>
#include <unordered_map>
#include <vector>
namespace dust3d {
@ -36,8 +37,10 @@ class UvMapPacker {
public:
struct Part {
Uuid id;
bool isSeam = false;
double width = 0.0;
double height = 0.0;
std::unordered_map<size_t, std::array<std::array<Vector2, 3>, 2>> uvCopyMap;
std::map<std::array<PositionKey, 3>, std::array<Vector2, 3>> localUv;
};
@ -49,6 +52,9 @@ public:
double height = 0.0;
bool flipped = false;
bool isSeam = false;
size_t imageWidth = 0;
size_t imageHeight = 0;
std::unordered_map<size_t, std::array<std::array<Vector2, 3>, 2>> uvCopyMap;
std::map<std::array<PositionKey, 3>, std::array<Vector2, 3>> globalUv;
};