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path: root/core/fpdfapi/render/cpdf_renderstatus.cpp
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Diffstat (limited to 'core/fpdfapi/render/cpdf_renderstatus.cpp')
-rw-r--r--core/fpdfapi/render/cpdf_renderstatus.cpp100
1 files changed, 51 insertions, 49 deletions
diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index 60b7a49858..4f2638f276 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -369,67 +369,65 @@ void DrawFuncShading(CFX_DIBitmap* pBitmap,
}
bool GetScanlineIntersect(int y,
- FX_FLOAT x1,
- FX_FLOAT y1,
- FX_FLOAT x2,
- FX_FLOAT y2,
+ const CFX_PointF& first,
+ const CFX_PointF& second,
FX_FLOAT* x) {
- if (y1 == y2)
+ if (first.y == second.y)
return false;
- if (y1 < y2) {
- if (y < y1 || y > y2)
- return false;
- } else {
- if (y < y2 || y > y1)
+ if (first.y < second.y) {
+ if (y < first.y || y > second.y)
return false;
+ } else if (y < second.y || y > first.y) {
+ return false;
}
- *x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1));
+ *x = first.x + ((second.x - first.x) * (y - first.y) / (second.y - first.y));
return true;
}
void DrawGouraud(CFX_DIBitmap* pBitmap,
int alpha,
CPDF_MeshVertex triangle[3]) {
- FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y;
+ FX_FLOAT min_y = triangle[0].position.y;
+ FX_FLOAT max_y = triangle[0].position.y;
for (int i = 1; i < 3; i++) {
- if (min_y > triangle[i].y) {
- min_y = triangle[i].y;
- }
- if (max_y < triangle[i].y) {
- max_y = triangle[i].y;
- }
+ min_y = std::min(min_y, triangle[i].position.y);
+ max_y = std::max(max_y, triangle[i].position.y);
}
- if (min_y == max_y) {
+ if (min_y == max_y)
return;
- }
- int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y);
- if (min_yi < 0) {
- min_yi = 0;
- }
- if (max_yi >= pBitmap->GetHeight()) {
+
+ int min_yi = std::max(static_cast<int>(FXSYS_floor(min_y)), 0);
+ int max_yi = static_cast<int>(FXSYS_ceil(max_y));
+
+ if (max_yi >= pBitmap->GetHeight())
max_yi = pBitmap->GetHeight() - 1;
- }
+
for (int y = min_yi; y <= max_yi; y++) {
int nIntersects = 0;
- FX_FLOAT inter_x[3], r[3], g[3], b[3];
+ FX_FLOAT inter_x[3];
+ FX_FLOAT r[3];
+ FX_FLOAT g[3];
+ FX_FLOAT b[3];
for (int i = 0; i < 3; i++) {
CPDF_MeshVertex& vertex1 = triangle[i];
CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3];
- bool bIntersect = GetScanlineIntersect(y, vertex1.x, vertex1.y, vertex2.x,
- vertex2.y, &inter_x[nIntersects]);
+ CFX_PointF& position1 = vertex1.position;
+ CFX_PointF& position2 = vertex2.position;
+ bool bIntersect =
+ GetScanlineIntersect(y, position1, position2, &inter_x[nIntersects]);
if (!bIntersect)
continue;
- FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.y);
+ FX_FLOAT y_dist = (y - position1.y) / (position2.y - position1.y);
r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist);
g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist);
b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist);
nIntersects++;
}
- if (nIntersects != 2) {
+ if (nIntersects != 2)
continue;
- }
+
int min_x, max_x, start_index, end_index;
if (inter_x[0] < inter_x[1]) {
min_x = (int)FXSYS_floor(inter_x[0]);
@@ -442,13 +440,12 @@ void DrawGouraud(CFX_DIBitmap* pBitmap,
start_index = 1;
end_index = 0;
}
- int start_x = min_x, end_x = max_x;
- if (start_x < 0) {
- start_x = 0;
- }
- if (end_x > pBitmap->GetWidth()) {
+
+ int start_x = std::max(min_x, 0);
+ int end_x = max_x;
+ if (end_x > pBitmap->GetWidth())
end_x = pBitmap->GetWidth();
- }
+
uint8_t* dib_buf =
pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4;
FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x);
@@ -487,17 +484,18 @@ void DrawFreeGouraudShading(
FXSYS_memset(triangle, 0, sizeof(triangle));
while (!stream.BitStream()->IsEOF()) {
- CPDF_MeshVertex vertex;
- uint32_t flag = stream.GetVertex(vertex, pObject2Bitmap);
+ uint32_t flag;
+ CPDF_MeshVertex vertex = stream.ReadVertex(*pObject2Bitmap, &flag);
if (flag == 0) {
triangle[0] = vertex;
for (int j = 1; j < 3; j++) {
- stream.GetVertex(triangle[j], pObject2Bitmap);
+ uint32_t tflag;
+ triangle[j] = stream.ReadVertex(*pObject2Bitmap, &tflag);
}
} else {
- if (flag == 1) {
+ if (flag == 1)
triangle[0] = triangle[1];
- }
+
triangle[1] = triangle[2];
triangle[2] = vertex;
}
@@ -525,14 +523,14 @@ void DrawLatticeGouraudShading(
std::unique_ptr<CPDF_MeshVertex, FxFreeDeleter> vertex(
FX_Alloc2D(CPDF_MeshVertex, row_verts, 2));
- if (!stream.GetVertexRow(vertex.get(), row_verts, pObject2Bitmap))
+ if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, vertex.get()))
return;
int last_index = 0;
while (1) {
CPDF_MeshVertex* last_row = vertex.get() + last_index * row_verts;
CPDF_MeshVertex* this_row = vertex.get() + (1 - last_index) * row_verts;
- if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap))
+ if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, this_row))
return;
CPDF_MeshVertex triangle[3];
@@ -827,7 +825,7 @@ void DrawCoonPatchMeshes(
CFX_PointF coords[16];
int point_count = type == kTensorProductPatchMeshShading ? 16 : 12;
while (!stream.BitStream()->IsEOF()) {
- uint32_t flag = stream.GetFlag();
+ uint32_t flag = stream.ReadFlag();
int iStartPoint = 0, iStartColor = 0, i = 0;
if (flag) {
iStartPoint = 4;
@@ -843,12 +841,16 @@ void DrawCoonPatchMeshes(
FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
}
for (i = iStartPoint; i < point_count; i++) {
- stream.GetCoords(coords[i].x, coords[i].y);
+ coords[i] = stream.ReadCoords();
pObject2Bitmap->TransformPoint(coords[i].x, coords[i].y);
}
+
for (i = iStartColor; i < 4; i++) {
- FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f;
- stream.GetColor(r, g, b);
+ FX_FLOAT r;
+ FX_FLOAT g;
+ FX_FLOAT b;
+ std::tie(r, g, b) = stream.ReadColor();
+
patch.patch_colors[i].comp[0] = (int32_t)(r * 255);
patch.patch_colors[i].comp[1] = (int32_t)(g * 255);
patch.patch_colors[i].comp[2] = (int32_t)(b * 255);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 01:15:25 +0000