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[python/turtle] Fix line drawing glitches

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This commit is contained in:
Léa Saviot
2018-12-21 11:57:36 +01:00
parent 5a941bc1d5
commit c2dbe9f7cc
1 changed files with 6 additions and 3 deletions
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9
python/port/mod/turtle/turtle.cpp
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@@ -6,6 +6,9 @@ extern "C" {
#include "../../helpers.h"
#include "../../port.h"
static inline mp_float_t maxF(mp_float_t x, mp_float_t y) { return x >= y ? x : y;}
static inline mp_float_t absF(mp_float_t x) { return x >= 0 ? x : -x;}
static constexpr KDCoordinate k_iconSize = 15;
static constexpr KDCoordinate k_iconBodySize = 5;
static constexpr KDCoordinate k_iconHeadSize = 3;
@@ -74,11 +77,11 @@ void Turtle::circle(mp_int_t radius, mp_float_t angle) {
bool Turtle::goTo(mp_float_t x, mp_float_t y) {
mp_float_t oldx = m_x;
mp_float_t oldy = m_y;
mp_float_t length = sqrt((x - oldx) * (x - oldx) + (y - oldy) * (y - oldy));
mp_float_t length = maxF(absF(floor(x) - floor(oldx)), absF(floor(y) - floor(oldy)));
if (length > 1) {
// Tweening function
for (int i = 0; i < length; i++) {
for (int i = 1; i < length; i++) {
mp_float_t progress = i / length;
erase();
if (dot(x * progress + oldx * (1 - progress), y * progress + oldy * (1 - progress))
@@ -175,7 +178,7 @@ void Turtle::setHeadingPrivate(mp_float_t angle) {
}
KDPoint Turtle::position(mp_float_t x, mp_float_t y) const {
return KDPoint(round(x + k_xOffset), round(k_invertedYAxisCoefficient * y + k_yOffset));
return KDPoint(floor(x + k_xOffset), floor(k_invertedYAxisCoefficient * y + k_yOffset));
}
bool Turtle::hasUnderneathPixelBuffer() {