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Numerical labels on grids are nicer and dont collide with each other

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This commit is contained in:
Yousef Khadadeh 2025-09-23 12:44:55 +03:00
parent 588425aa8b
commit 1da7cdce75
3 changed files with 122 additions and 19 deletions
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83
src/WorldGrid.cpp
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@ -328,46 +328,97 @@ void WorldGrid::draw(GridManager& gMan, SkCanvas* canvas, const DrawData& drawDa
draw_coordinates(canvas, drawData, divSize, gridCoordDivSize);
}
void WorldGrid::draw_coordinates(SkCanvas* canvas, const DrawData& drawData, const WorldScalar& divWorldSize, const WorldScalar& gridCoordDivSize) {
SkFont f = drawData.main->toolbar.io->get_font(18.0f);
void WorldGrid::draw_coordinates(SkCanvas* canvas, const DrawData& drawData, WorldScalar divWorldSize, WorldScalar gridCoordDivSize) {
SkFont f = drawData.main->toolbar.io->get_font(drawData.main->toolbar.final_gui_scale() * drawData.main->toolbar.io->fontSize);
SkFontMetrics metrics;
f.getMetrics(&metrics);
float toolbarXLength = drawData.main->toolbar.final_gui_scale() * 80.0f;
const WorldVec& worldWindowEndPos = drawData.cam.c.pos + drawData.cam.c.dir_from_space(drawData.cam.viewingArea);
WorldVec worldWindowBeginPos;
WorldScalar xCoordMultiplier = FixedPoint::trunc((drawData.cam.c.pos.x() - offset.x()) / divWorldSize);
worldWindowBeginPos.x() = xCoordMultiplier * divWorldSize + offset.x();
WorldScalar yCoordMultiplier = FixedPoint::trunc((drawData.cam.c.pos.y() - offset.y()) / divWorldSize);
worldWindowBeginPos.y() = yCoordMultiplier * divWorldSize + offset.y();
WorldVec coordMultiplier;
auto calculateCoordMultipliers = [&]() {
coordMultiplier.x() = FixedPoint::trunc((drawData.cam.c.pos.x() - offset.x()) / divWorldSize);
worldWindowBeginPos.x() = coordMultiplier.x() * divWorldSize + offset.x();
coordMultiplier.y() = FixedPoint::trunc((drawData.cam.c.pos.y() - offset.y()) / divWorldSize);
worldWindowBeginPos.y() = coordMultiplier.y() * divWorldSize + offset.y();
};
calculateCoordMultipliers();
{
WorldScalar xGridCoord = xCoordMultiplier * gridCoordDivSize;
struct NumberTextData {
std::string text;
float pos; // X or Y pos depending on axis
float length; // X length
};
std::vector<NumberTextData> xAxisLabels, yAxisLabels;
for(int maxRepeats = 0; maxRepeats < 3; maxRepeats++) {
xAxisLabels.clear();
WorldScalar xGridCoord = coordMultiplier.x() * gridCoordDivSize;
for(WorldScalar xWorldCoord = worldWindowBeginPos.x(); xWorldCoord < worldWindowEndPos.x(); xWorldCoord += divWorldSize) {
NumberTextData label;
Vector2f gridPointScreenPos = drawData.cam.c.to_space(WorldVec{xWorldCoord, worldWindowBeginPos.y()});
std::string xGridCoordStr = xGridCoord.display_int_str(4);
float textXLength = f.measureText(xGridCoordStr.c_str(), xGridCoordStr.length(), SkTextEncoding::kUTF8, nullptr);
SkPaint p2(SkColor4f{1.0f, 0.0f, 0.0f, 1.0f});
canvas->drawSimpleText(xGridCoordStr.c_str(), xGridCoordStr.length(), SkTextEncoding::kUTF8, gridPointScreenPos.x() - textXLength * 0.5f, drawData.cam.viewingArea.y() - metrics.fDescent, f, p2);
label.text = xGridCoord.display_int_str(4, true);
label.length = f.measureText(label.text.c_str(), label.text.length(), SkTextEncoding::kUTF8, nullptr);
label.pos = gridPointScreenPos.x() - label.length * 0.5f;
xGridCoord += gridCoordDivSize;
xAxisLabels.emplace_back(label);
}
bool labelsTooClose = false;
for(size_t i = 1; i < xAxisLabels.size(); i++) {
if(xAxisLabels[i - 1].pos + xAxisLabels[i - 1].length >= xAxisLabels[i].pos - 10.0f * drawData.main->toolbar.final_gui_scale()) {
divWorldSize *= WorldScalar(2);
gridCoordDivSize *= WorldScalar(2);
calculateCoordMultipliers();
labelsTooClose = true;
break;
}
}
if(!labelsTooClose)
break;
}
float yAxisMaxXLength = 0.0f;
{
WorldScalar yGridCoord = FixedPoint::trunc((offset.y() - drawData.cam.c.pos.y()) / divWorldSize) * gridCoordDivSize + gridCoordDivSize;
for(WorldScalar yWorldCoord = worldWindowBeginPos.y(); yWorldCoord < worldWindowEndPos.y(); yWorldCoord += divWorldSize) {
NumberTextData label;
Vector2f gridPointScreenPos = drawData.cam.c.to_space(WorldVec{worldWindowBeginPos.x(), yWorldCoord});
std::string yGridCoordStr = yGridCoord.display_int_str(4);
SkPaint p2(SkColor4f{1.0f, 0.0f, 0.0f, 1.0f});
canvas->drawSimpleText(yGridCoordStr.c_str(), yGridCoordStr.length(), SkTextEncoding::kUTF8, toolbarXLength, gridPointScreenPos.y() + metrics.fDescent, f, p2);
label.text = yGridCoord.display_int_str(4, true);
label.pos = gridPointScreenPos.y() + metrics.fDescent;
label.length = f.measureText(label.text.c_str(), label.text.length(), SkTextEncoding::kUTF8, nullptr);
yGridCoord -= gridCoordDivSize;
yAxisMaxXLength = std::max(yAxisMaxXLength, label.length);
yAxisLabels.emplace_back(label);
}
}
SkPaint labelColor(SkColor4f{color.x(), color.y(), color.z(), 1.0f});
float xAxisYPos = drawData.cam.viewingArea.y() - metrics.fDescent;
canvas->drawRect(SkRect::MakeXYWH(toolbarXLength, 0.0f, yAxisMaxXLength, drawData.cam.viewingArea.y()), SkPaint{color_mul_alpha(drawData.main->toolbar.io->theme->backColor1, 0.5f)});
canvas->drawRect(SkRect::MakeLTRB(toolbarXLength + yAxisMaxXLength, drawData.cam.viewingArea.y() - (-metrics.fAscent + metrics.fDescent), drawData.cam.viewingArea.x(), drawData.cam.viewingArea.y()), SkPaint{color_mul_alpha(drawData.main->toolbar.io->theme->backColor1, 0.5f)});
for(auto& l : xAxisLabels) {
if(l.pos > toolbarXLength + yAxisMaxXLength)
canvas->drawSimpleText(l.text.c_str(), l.text.length(), SkTextEncoding::kUTF8, l.pos, xAxisYPos, f, labelColor);
}
for(auto& l : yAxisLabels)
canvas->drawSimpleText(l.text.c_str(), l.text.length(), SkTextEncoding::kUTF8, toolbarXLength + yAxisMaxXLength * 0.5f - l.length * 0.5f, l.pos, f, labelColor);
}