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Improved UV generation for line shapes

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This commit is contained in:
r.kuznetsov 2015-05-26 17:49:26 +03:00
parent 02e352917b
commit 7a103a9e1f
3 changed files with 92 additions and 114 deletions
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5
drape_frontend/frontend_renderer.cpp
View file

@ -439,10 +439,7 @@ int FrontendRenderer::GetCurrentZoomLevel() const
void FrontendRenderer::ResolveZoomLevel(const ScreenBase & screen)
{
//TODO(@kuznetsov): revise it
int const upperScale = scales::GetUpperScale();
int const zoomLevel = GetDrawTileScale(screen);
m_currentZoomLevel = (zoomLevel <= upperScale ? zoomLevel : upperScale);
m_currentZoomLevel = GetDrawTileScale(screen);
}
void FrontendRenderer::OnTap(m2::PointD const & pt, bool isLongTap)

198
drape_frontend/line_shape.cpp
View file

@ -18,21 +18,12 @@ namespace
float const CAP = 1.0f;
float const LEFT_WIDTH = 1.0f;
float const RIGHT_WIDTH = -1.0f;
size_t const TEX_BEG_IDX = 0;
size_t const TEX_END_IDX = 1;
struct TexDescription
{
float m_globalLength;
glsl::vec2 m_texCoord;
};
class TextureCoordGenerator
{
public:
TextureCoordGenerator(float const baseGtoPScale)
: m_baseGtoPScale(baseGtoPScale)
, m_basePtoGScale(1.0f / baseGtoPScale)
{
}
@ -41,46 +32,37 @@ namespace
m_isSolid = isSolid;
m_region = region;
if (!m_isSolid)
{
m_maskLength = static_cast<float>(m_region.GetMaskPixelLength());
m_patternLength = static_cast<float>(m_region.GetPatternPixelLength());
}
}
bool GetTexCoords(TexDescription & desc)
float GetUvOffsetByDistance(float distance) const
{
if (m_isSolid)
{
desc.m_texCoord = glsl::ToVec2(m_region.GetTexRect().Center());
return true;
}
float const pxLength = desc.m_globalLength * m_baseGtoPScale;
float const maskRest = m_maskLength - m_pxCursor;
m2::RectF const & texRect = m_region.GetTexRect();
if (maskRest < pxLength)
{
desc.m_globalLength = maskRest * m_basePtoGScale;
desc.m_texCoord = glsl::vec2(texRect.maxX(), texRect.Center().y);
return false;
}
float texX = texRect.minX() + ((m_pxCursor + pxLength) / m_maskLength) * texRect.SizeX();
m_pxCursor = fmodf(m_pxCursor + pxLength, m_patternLength);
desc.m_texCoord = glsl::vec2(texX, texRect.Center().y);
return true;
return m_isSolid ? 1.0 : (distance * m_baseGtoPScale / m_maskLength);
}
glsl::vec2 GetTexCoordsByDistance(float distance) const
{
float normalizedOffset = min(GetUvOffsetByDistance(distance), 1.0f);
return GetTexCoords(normalizedOffset);
}
glsl::vec2 GetTexCoords(float normalizedOffset) const
{
m2::RectF const & texRect = m_region.GetTexRect();
if (m_isSolid)
return glsl::ToVec2(texRect.Center());
return glsl::vec2(texRect.minX() + normalizedOffset * texRect.SizeX(), texRect.Center().y);
}
float GetMaskLength() const { return m_maskLength; }
bool IsSolid() const { return m_isSolid; }
private:
float const m_baseGtoPScale;
float const m_basePtoGScale;
dp::TextureManager::StippleRegion m_region;
float m_maskLength = 0.0f;
float m_patternLength = 0.0f;
bool m_isSolid = true;
float m_pxCursor = 0.0f;
};
}
@ -128,8 +110,6 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
glsl::vec2 leftSegment(SEGMENT, LEFT_WIDTH);
glsl::vec2 rightSegment(SEGMENT, RIGHT_WIDTH);
TexDescription texCoords[2];
if (generateCap)
{
glsl::vec2 startPoint = glsl::ToVec2(path[0]);
@ -141,17 +121,13 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
glsl::vec3 pivot = glsl::vec3(startPoint, m_params.m_depth);
glsl::vec2 leftCap(capType, LEFT_WIDTH);
glsl::vec2 rightCap(capType, RIGHT_WIDTH);
glsl::vec2 const uvStart = texCoordGen.GetTexCoordsByDistance(0.0);
glsl::vec2 const uvEnd = texCoordGen.GetTexCoordsByDistance(glbHalfWidth);
texCoords[TEX_BEG_IDX].m_globalLength = 0.0;
texCoords[TEX_END_IDX].m_globalLength = glbHalfWidth;
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_END_IDX]), ());
geometry.push_back(LV(pivot, leftNormal + tangent, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftCap));
geometry.push_back(LV(pivot, rightNormal + tangent, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, rightCap));
geometry.push_back(LV(pivot, leftNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(pivot, rightNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, rightSegment));
geometry.push_back(LV(pivot, leftNormal + tangent, colorCoord, uvStart, leftCap));
geometry.push_back(LV(pivot, rightNormal + tangent, colorCoord, uvStart, rightCap));
geometry.push_back(LV(pivot, leftNormal, colorCoord, uvEnd, leftSegment));
geometry.push_back(LV(pivot, rightNormal, colorCoord, uvEnd, rightSegment));
}
glsl::vec2 prevPoint;
@ -166,7 +142,6 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
calcTangentAndNormals(startPoint, endPoint, tangent, leftNormal, rightNormal);
glsl::vec3 startPivot = glsl::vec3(startPoint, m_params.m_depth);
glsl::vec3 endPivot = glsl::vec3(endPoint, m_params.m_depth);
// Create join beetween current segment and previous
if (i > 1)
@ -184,41 +159,36 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
nextForming = rightNormal;
}
float const distance = glsl::length(nextForming - prevForming) / m_params.m_baseGtoPScale;
float const endUv = texCoordGen.GetUvOffsetByDistance(distance);
glsl::vec2 const uvStart = texCoordGen.GetTexCoords(0.0f);
glsl::vec2 const uvEnd = texCoordGen.GetTexCoords(endUv);
if (m_params.m_join == dp::BevelJoin)
{
texCoords[TEX_BEG_IDX].m_globalLength = 0.0f;
texCoords[TEX_END_IDX].m_globalLength = glsl::length(nextForming - prevForming) / m_params.m_baseGtoPScale;
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_END_IDX]), ());
geometry.push_back(LV(startPivot, prevForming, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, nextForming, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, nextForming, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, prevForming, colorCoord, uvStart, leftSegment));
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, uvStart, leftSegment));
geometry.push_back(LV(startPivot, nextForming, colorCoord, uvEnd, leftSegment));
geometry.push_back(LV(startPivot, nextForming, colorCoord, uvEnd, leftSegment));
}
else
{
glsl::vec2 middleForming = glsl::normalize(prevForming + nextForming);
glsl::vec2 zeroDxDy(0.0, 0.0);
texCoords[TEX_BEG_IDX].m_globalLength = 0.0f;
texCoords[TEX_END_IDX].m_globalLength = glsl::length(nextForming - prevForming) / m_params.m_baseGtoPScale;
TexDescription middle;
middle.m_globalLength = texCoords[TEX_END_IDX].m_globalLength / 2.0f;
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
VERIFY(texCoordGen.GetTexCoords(middle), ());
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_END_IDX]), ());
float const middleUv = 0.5f * endUv;
glsl::vec2 const uvMiddle = texCoordGen.GetTexCoords(middleUv);
if (m_params.m_join == dp::MiterJoin)
{
float const b = glsl::length(prevForming - nextForming) / 2.0;
float const b = 0.5f * glsl::length(prevForming - nextForming);
float const a = glsl::length(prevForming);
middleForming *= static_cast<float>(sqrt(a * a + b * b));
geometry.push_back(LV(startPivot, prevForming, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, zeroDxDy));
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, zeroDxDy));
geometry.push_back(LV(startPivot, middleForming, colorCoord, middle.m_texCoord, zeroDxDy));
geometry.push_back(LV(startPivot, nextForming, colorCoord, texCoords[TEX_END_IDX].m_texCoord, zeroDxDy));
geometry.push_back(LV(startPivot, prevForming, colorCoord, uvStart, zeroDxDy));
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, uvStart, zeroDxDy));
geometry.push_back(LV(startPivot, middleForming, colorCoord, uvMiddle, zeroDxDy));
geometry.push_back(LV(startPivot, nextForming, colorCoord, uvEnd, zeroDxDy));
}
else
{
@ -227,40 +197,56 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
glsl::vec2 dxdyLeft(0.0, -1.0);
glsl::vec2 dxdyRight(0.0, -1.0);
glsl::vec2 dxdyMiddle(1.0, 1.0);
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, zeroDxDy));
geometry.push_back(LV(startPivot, prevForming, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, dxdyLeft));
geometry.push_back(LV(startPivot, nextForming, colorCoord, texCoords[TEX_END_IDX].m_texCoord, dxdyRight));
geometry.push_back(LV(startPivot, middleForming, colorCoord, middle.m_texCoord, dxdyMiddle));
geometry.push_back(LV(startPivot, zeroNormal, colorCoord, uvStart, zeroDxDy));
geometry.push_back(LV(startPivot, prevForming, colorCoord, uvStart, dxdyLeft));
geometry.push_back(LV(startPivot, nextForming, colorCoord, uvEnd, dxdyRight));
geometry.push_back(LV(startPivot, middleForming, colorCoord, uvMiddle, dxdyMiddle));
}
}
}
texCoords[TEX_BEG_IDX].m_globalLength = 0.0;
texCoords[TEX_END_IDX].m_globalLength = glsl::length(endPoint - startPoint);
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
while (!texCoordGen.GetTexCoords(texCoords[TEX_END_IDX]))
float initialGlobalLength = glsl::length(endPoint - startPoint);
float pixelLen = initialGlobalLength * m_params.m_baseGtoPScale;
int steps = 1;
float maskSize = initialGlobalLength;
if (!texCoordGen.IsSolid())
{
glsl::vec2 newEndPoint = startPoint + tangent * texCoords[TEX_END_IDX].m_globalLength;
glsl::vec3 newEndPivot = glsl::vec3(newEndPoint, m_params.m_depth);
geometry.push_back(LV(startPivot, leftNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, rightNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, rightSegment));
geometry.push_back(LV(newEndPivot, leftNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(newEndPivot, rightNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, rightSegment));
startPoint = newEndPoint;
startPivot = newEndPivot;
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
texCoords[TEX_END_IDX].m_globalLength = glsl::length(endPoint - startPoint);
maskSize = texCoordGen.GetMaskLength() / m_params.m_baseGtoPScale;
steps = static_cast<int>(pixelLen / texCoordGen.GetMaskLength()) + 1;
}
geometry.push_back(LV(startPivot, leftNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(startPivot, rightNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, rightSegment));
geometry.push_back(LV(endPivot, leftNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(endPivot, rightNormal, colorCoord, texCoords[TEX_END_IDX].m_texCoord, rightSegment));
float currentSize = 0;
glsl::vec3 currentStartPivot = startPivot;
for (int i = 0; i < steps; i++)
{
currentSize += maskSize;
prevPoint = startPoint;
bool isLastPoint = false;
float endOffset = 1.0f;
if (currentSize >= initialGlobalLength)
{
endOffset = (initialGlobalLength - currentSize + maskSize) / maskSize;
currentSize = initialGlobalLength;
isLastPoint = true;
}
glsl::vec2 const newPoint = startPoint + tangent * currentSize;
glsl::vec3 const newPivot = glsl::vec3(newPoint, m_params.m_depth);
glsl::vec2 const uvStart = texCoordGen.GetTexCoords(0.0f);
glsl::vec2 const uvEnd = texCoordGen.GetTexCoords(endOffset);
geometry.push_back(LV(currentStartPivot, leftNormal, colorCoord, uvStart, leftSegment));
geometry.push_back(LV(currentStartPivot, rightNormal, colorCoord, uvStart, rightSegment));
geometry.push_back(LV(newPivot, leftNormal, colorCoord, uvEnd, leftSegment));
geometry.push_back(LV(newPivot, rightNormal, colorCoord, uvEnd, rightSegment));
currentStartPivot = newPivot;
if (isLastPoint)
break;
}
prevPoint = currentStartPivot.xy();
prevLeftNormal = leftNormal;
prevRightNormal = rightNormal;
}
@ -277,17 +263,13 @@ void LineShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> t
glsl::vec3 pivot = glsl::vec3(endPoint, m_params.m_depth);
glsl::vec2 leftCap(capType, LEFT_WIDTH);
glsl::vec2 rightCap(capType, RIGHT_WIDTH);
glsl::vec2 const uvStart = texCoordGen.GetTexCoordsByDistance(0.0);
glsl::vec2 const uvEnd = texCoordGen.GetTexCoordsByDistance(glbHalfWidth);
texCoords[TEX_BEG_IDX].m_globalLength = 0.0;
texCoords[TEX_END_IDX].m_globalLength = glbHalfWidth;
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_BEG_IDX]), ());
VERIFY(texCoordGen.GetTexCoords(texCoords[TEX_END_IDX]), ());
geometry.push_back(LV(pivot, leftNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, leftSegment));
geometry.push_back(LV(pivot, rightNormal, colorCoord, texCoords[TEX_BEG_IDX].m_texCoord, rightSegment));
geometry.push_back(LV(pivot, leftNormal + tangent, colorCoord, texCoords[TEX_END_IDX].m_texCoord, leftCap));
geometry.push_back(LV(pivot, rightNormal + tangent, colorCoord, texCoords[TEX_END_IDX].m_texCoord, rightCap));
geometry.push_back(LV(pivot, leftNormal, colorCoord, uvStart, leftSegment));
geometry.push_back(LV(pivot, rightNormal, colorCoord, uvStart, rightSegment));
geometry.push_back(LV(pivot, leftNormal + tangent, colorCoord, uvEnd, leftCap));
geometry.push_back(LV(pivot, rightNormal + tangent, colorCoord, uvEnd, rightCap));
}
dp::GLState state(gpu::LINE_PROGRAM, dp::GLState::GeometryLayer);

3
drape_frontend/tile_info.cpp
View file

@ -98,8 +98,7 @@ void TileInfo::ProcessID(FeatureID const & id)
void TileInfo::InitStylist(FeatureType const & f, Stylist & s)
{
CheckCanceled();
//TODO(@kuznetsov): m_context->GetTileKey().m_zoomLevel?
df::InitStylist(f, GetZoomLevel(), s);
df::InitStylist(f, m_context->GetTileKey().m_zoomLevel, s);
}
//====================================================//