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Code Issues Activity Actions

PaintBrush: Make spray circular.

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This commit is contained in:
Sergey Bugaev 2019-06-17 16:45:46 +03:00 • committed by Andreas Kling
parent 9fa4e779ff
commit 7ccb84e58e
1 changed files with 6 additions and 5 deletions
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11
Applications/PaintBrush/SprayTool.cpp
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@ -5,6 +5,7 @@
#include <LibGUI/GPainter.h> #include <LibGUI/GPainter.h>
#include <SharedGraphics/GraphicsBitmap.h> #include <SharedGraphics/GraphicsBitmap.h>
#include <stdio.h> #include <stdio.h>
#include <LibM/math.h>
SprayTool::SprayTool() SprayTool::SprayTool()
{ {
@ -29,12 +30,12 @@ void SprayTool::paint_it()
auto& bitmap = m_widget->bitmap(); auto& bitmap = m_widget->bitmap();
ASSERT(bitmap.format() == GraphicsBitmap::Format::RGB32); ASSERT(bitmap.format() == GraphicsBitmap::Format::RGB32);
m_widget->update(); m_widget->update();
const double radius = 15; const double base_radius = 15;
for (int i = 0; i < 100 + (nrand() * 800); i++) { for (int i = 0; i < 100 + (nrand() * 800); i++) {
const int minX = m_last_pos.x() - radius; double radius = base_radius * nrand();
const int minY = m_last_pos.y() - radius; double angle = 2 * M_PI * nrand();
const int xpos = minX + (radius * 2 * nrand()); const int xpos = m_last_pos.x() + radius * cos(angle);
const int ypos = minY + (radius * 2 * nrand()); const int ypos = m_last_pos.y() - radius * sin(angle);
if (xpos < 0 || xpos >= bitmap.width()) if (xpos < 0 || xpos >= bitmap.width())
continue; continue;
if (ypos < 0 || ypos >= bitmap.height()) if (ypos < 0 || ypos >= bitmap.height())