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Internals: AddPolyline: Add spaces for consistency, renaming.

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This commit is contained in:
ocornut 2020-05-18 11:55:36 +02:00
parent 39c978f499
commit 417ac68f82
1 changed files with 28 additions and 28 deletions
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56
imgui_draw.cpp
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@ -627,13 +627,12 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
if (points_count < 2) if (points_count < 2)
return; return;
const ImVec2 uv = _Data->TexUvWhitePixel; const ImVec2 opaque_uv = _Data->TexUvWhitePixel;
int count = points_count; int count = points_count;
if (!closed) if (!closed)
count = points_count-1; count = points_count-1;
const bool thick_line = thickness > 1.0f; const bool thick_line = (thickness > 1.0f);
if (Flags & ImDrawListFlags_AntiAliasedLines) if (Flags & ImDrawListFlags_AntiAliasedLines)
{ {
// Anti-aliased stroke // Anti-aliased stroke
@ -704,9 +703,9 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
// Add vertices // Add vertices
for (int i = 0; i < points_count; i++) for (int i = 0; i < points_count; i++)
{ {
_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = temp_points[i*2+0]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; _VtxWritePtr[1].pos = temp_points[i*2+0]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col_trans;
_VtxWritePtr[2].pos = temp_points[i*2+1]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col_trans; _VtxWritePtr[2].pos = temp_points[i*2+1]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col_trans;
_VtxWritePtr += 3; _VtxWritePtr += 3;
} }
} }
@ -715,22 +714,23 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f; const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;
if (!closed) if (!closed)
{ {
const int points_last = points_count - 1;
temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE); temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness); temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);
temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness); temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);
temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE); temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[(points_count-1)*4+0] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE); temp_points[points_last * 4 + 0] = points[points_last] + temp_normals[points_last] * (half_inner_thickness + AA_SIZE);
temp_points[(points_count-1)*4+1] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness); temp_points[points_last * 4 + 1] = points[points_last] + temp_normals[points_last] * (half_inner_thickness);
temp_points[(points_count-1)*4+2] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness); temp_points[points_last * 4 + 2] = points[points_last] - temp_normals[points_last] * (half_inner_thickness);
temp_points[(points_count-1)*4+3] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE); temp_points[points_last * 4 + 3] = points[points_last] - temp_normals[points_last] * (half_inner_thickness + AA_SIZE);
} }
// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer. // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
unsigned int idx1 = _VtxCurrentIdx; unsigned int idx1 = _VtxCurrentIdx;
for (int i1 = 0; i1 < count; i1++) for (int i1 = 0; i1 < count; i1++)
{ {
const int i2 = (i1+1) == points_count ? 0 : i1+1; const int i2 = (i1 + 1) == points_count ? 0 : (i1 + 1); // i2 is the second point of the line segment
unsigned int idx2 = (i1+1) == points_count ? _VtxCurrentIdx : idx1+4; const unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : (idx1 + 4); // Vertex index for end of segment
// Average normals // Average normals
float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f; float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;
@ -753,12 +753,12 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
out_vtx[3].y = points[i2].y - dm_out_y; out_vtx[3].y = points[i2].y - dm_out_y;
// Add indexes // Add indexes
_IdxWritePtr[0] = (ImDrawIdx)(idx2+1); _IdxWritePtr[1] = (ImDrawIdx)(idx1+1); _IdxWritePtr[2] = (ImDrawIdx)(idx1+2); _IdxWritePtr[0] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[3] = (ImDrawIdx)(idx1+2); _IdxWritePtr[4] = (ImDrawIdx)(idx2+2); _IdxWritePtr[5] = (ImDrawIdx)(idx2+1); _IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[6] = (ImDrawIdx)(idx2+1); _IdxWritePtr[7] = (ImDrawIdx)(idx1+1); _IdxWritePtr[8] = (ImDrawIdx)(idx1+0); _IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[9] = (ImDrawIdx)(idx1+0); _IdxWritePtr[10] = (ImDrawIdx)(idx2+0); _IdxWritePtr[11] = (ImDrawIdx)(idx2+1); _IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[12] = (ImDrawIdx)(idx2+2); _IdxWritePtr[13] = (ImDrawIdx)(idx1+2); _IdxWritePtr[14] = (ImDrawIdx)(idx1+3); _IdxWritePtr[12] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[13] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[14] = (ImDrawIdx)(idx1 + 3);
_IdxWritePtr[15] = (ImDrawIdx)(idx1+3); _IdxWritePtr[16] = (ImDrawIdx)(idx2+3); _IdxWritePtr[17] = (ImDrawIdx)(idx2+2); _IdxWritePtr[15] = (ImDrawIdx)(idx1 + 3); _IdxWritePtr[16] = (ImDrawIdx)(idx2 + 3); _IdxWritePtr[17] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr += 18; _IdxWritePtr += 18;
idx1 = idx2; idx1 = idx2;
@ -767,10 +767,10 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
// Add vertices // Add vertices
for (int i = 0; i < points_count; i++) for (int i = 0; i < points_count; i++)
{ {
_VtxWritePtr[0].pos = temp_points[i*4+0]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col_trans; _VtxWritePtr[0].pos = temp_points[i * 4 + 0]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col_trans;
_VtxWritePtr[1].pos = temp_points[i*4+1]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col; _VtxWritePtr[1].pos = temp_points[i * 4 + 1]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = temp_points[i*4+2]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col; _VtxWritePtr[2].pos = temp_points[i * 4 + 2]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = temp_points[i*4+3]; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col_trans; _VtxWritePtr[3].pos = temp_points[i * 4 + 3]; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col_trans;
_VtxWritePtr += 4; _VtxWritePtr += 4;
} }
} }
@ -795,14 +795,14 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
dx *= (thickness * 0.5f); dx *= (thickness * 0.5f);
dy *= (thickness * 0.5f); dy *= (thickness * 0.5f);
_VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; _VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col; _VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col; _VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col; _VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col;
_VtxWritePtr += 4; _VtxWritePtr += 4;
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx+1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx+2); _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + 2);
_IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx+2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx+3); _IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx + 2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx + 3);
_IdxWritePtr += 6; _IdxWritePtr += 6;
_VtxCurrentIdx += 4; _VtxCurrentIdx += 4;
} }