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Util: Shape drawing fixes, better tests

This commit is contained in:
Vicki Pfau 2023-07-29 14:13:55 -07:00
parent fe229348eb
commit 0457b1bcb7
2 changed files with 109 additions and 2 deletions
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5
src/util/image.c
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@ -705,6 +705,9 @@ static void _drawCircle2x2(struct mPainter* painter, int x, int y, uint32_t colo
}
void mPainterDrawCircle(struct mPainter* painter, int x, int y, int diameter) {
if (diameter < 1) {
return;
}
int radius = diameter / 2;
int offset = (diameter ^ 1) & 1;
int stroke = painter->strokeWidth;
@ -740,7 +743,7 @@ void mPainterDrawCircle(struct mPainter* painter, int x, int y, int diameter) {
mPainterDrawPixel(painter, x + i, y + radius, painter->strokeColor);
}
if (painter->fill) {
for (i = i; i < y1 + 1; ++i) {
for (i = 1; i < y1 + 1; ++i) {
mPainterDrawPixel(painter, x + radius, y + radius - i, painter->fillColor);
mPainterDrawPixel(painter, x + radius, y + radius + i, painter->fillColor);
mPainterDrawPixel(painter, x + radius - i, y + radius, painter->fillColor);

106
src/util/test/image.c
View File

@ -1300,6 +1300,24 @@ M_TEST_DEFINE(painterFillRectangleBlend) {
mImageDestroy(image);
}
M_TEST_DEFINE(painterFillRectangleInvalid) {
struct mImage* image;
struct mPainter painter;
image = mImageCreate(4, 4, mCOLOR_XRGB8);
mPainterInit(&painter, image);
painter.blend = false;
painter.fill = true;
painter.strokeWidth = 0;
painter.fillColor = 0xFF0000FF;
mPainterDrawRectangle(&painter, 1, 1, -1, -1);
COMPARE4X(0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000);
mImageDestroy(image);
}
M_TEST_DEFINE(painterStrokeRectangle) {
struct mImage* image;
struct mPainter painter;
@ -1565,6 +1583,25 @@ M_TEST_DEFINE(painterStrokeRectangleBlend) {
0x400000FF, 0x40FF0000, 0x6F91006D, 0x40FF0000,
0x400000FF, 0x6F91006D, 0x400000FF, 0x40FF0000,
0x00000000, 0x40FF0000, 0x40FF0000, 0x40FF0000);
mImageDestroy(image);
}
M_TEST_DEFINE(painterStrokeRectangleInvalid) {
struct mImage* image;
struct mPainter painter;
image = mImageCreate(4, 4, mCOLOR_XRGB8);
mPainterInit(&painter, image);
painter.blend = false;
painter.fill = false;
painter.strokeWidth = 1;
painter.strokeColor = 0xFF0000FF;
mPainterDrawRectangle(&painter, 1, 1, -1, -1);
COMPARE4X(0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000);
mImageDestroy(image);
}
M_TEST_DEFINE(painterDrawRectangle) {
@ -1876,6 +1913,7 @@ M_TEST_DEFINE(painterDrawCircleArea) {
}
float area = i * i;
assert_float_equal(filled / area, M_PI / 4, 0.12);
mImageDestroy(image);
}
}
@ -1905,10 +1943,10 @@ M_TEST_DEFINE(painterDrawCircleCircumference) {
}
}
assert_float_equal(filled / (float) i, M_PI, M_PI * 0.11);
mImageDestroy(image);
}
}
M_TEST_DEFINE(painterDrawCircleOffset) {
struct mImage* image;
struct mPainter painter;
@ -1935,9 +1973,71 @@ M_TEST_DEFINE(painterDrawCircleOffset) {
assert_int_equal(color, mImageGetPixel(image, x + i, y + i));
}
}
mImageDestroy(image);
}
}
M_TEST_DEFINE(painterDrawCircleBlend) {
struct mImage* image;
struct mPainter painter;
int i, j;
for (i = 1; i < 10; ++i) {
for (j = 0; j < i / 2 + 1; ++j) {
image = mImageCreate(i, i, mCOLOR_ARGB8);
mPainterInit(&painter, image);
painter.blend = true;
painter.fill = true;
painter.strokeWidth = j;
painter.fillColor = 0x8000FF00;
painter.strokeColor = 0x800000FF;
mPainterDrawCircle(&painter, 0, 0, i);
int x, y;
for (y = 0; y < i; ++y) {
for (x = 0; x < i; ++x) {
uint32_t color = mImageGetPixel(image, x, y);
if (color != painter.strokeColor && color != painter.fillColor) {
assert_int_equal(color, 0);
}
}
}
mImageDestroy(image);
}
}
}
M_TEST_DEFINE(painterDrawCircleInvalid) {
struct mImage* image;
struct mPainter painter;
image = mImageCreate(4, 4, mCOLOR_XRGB8);
mPainterInit(&painter, image);
painter.blend = false;
painter.fill = true;
painter.strokeWidth = 0;
painter.fillColor = 0xFF0000FF;
mPainterDrawCircle(&painter, 2, 2, -1);
COMPARE4X(0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00);
mImageDestroy(image);
image = mImageCreate(4, 4, mCOLOR_XRGB8);
mPainterInit(&painter, image);
painter.blend = false;
painter.fill = false;
painter.strokeWidth = 1;
painter.strokeColor = 0xFF0000FF;
mPainterDrawCircle(&painter, 2, 2, -1);
COMPARE4X(0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00);
mImageDestroy(image);
}
#undef COMPARE3X
#undef COMPARE3
#undef COMPARE4X
@ -1969,9 +2069,11 @@ M_TEST_SUITE_DEFINE(Image,
cmocka_unit_test(blitBoundaries),
cmocka_unit_test(painterFillRectangle),
cmocka_unit_test(painterFillRectangleBlend),
cmocka_unit_test(painterFillRectangleInvalid),
cmocka_unit_test(painterStrokeRectangle),
cmocka_unit_test(painterStrokeRectangleWidth),
cmocka_unit_test(painterStrokeRectangleBlend),
cmocka_unit_test(painterStrokeRectangleInvalid),
cmocka_unit_test(painterDrawRectangle),
cmocka_unit_test(painterDrawLineOctants),
cmocka_unit_test(painterDrawLineWidth),
@ -1979,4 +2081,6 @@ M_TEST_SUITE_DEFINE(Image,
cmocka_unit_test(painterDrawCircleArea),
cmocka_unit_test(painterDrawCircleCircumference),
cmocka_unit_test(painterDrawCircleOffset),
cmocka_unit_test(painterDrawCircleBlend),
cmocka_unit_test(painterDrawCircleInvalid),
)