119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
#include "pch.h"
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#include "maths.h"
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void maths::enclosing_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect)
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{
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int xPos1 = rect1->XPosition;
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int yPos1 = rect1->YPosition;
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int width1 = rect1->Width;
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int height1 = rect1->Height;
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int xPos2 = rect2->XPosition;
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bool rect2XPosLessRect1 = rect2->XPosition < rect1->XPosition;
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int yPos2 = rect2->YPosition;
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int width2 = rect2->Width;
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int height2 = rect2->Height;
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int xPos2_2 = rect2->XPosition;
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if (rect2XPosLessRect1)
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{
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width1 += xPos1 - xPos2;
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xPos1 = xPos2;
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}
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if (yPos2 < yPos1)
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{
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height1 += yPos1 - yPos2;
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yPos1 = yPos2;
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}
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if (width2 + xPos2 > xPos1 + width1)
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width1 = xPos2_2 + width2 - xPos1;
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int height1_2 = height1;
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if (height2 + yPos2 > height1 + yPos1)
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height1_2 = yPos2 + height2 - yPos1;
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dstRect->YPosition = yPos1;
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dstRect->Height = height1_2;
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dstRect->XPosition = xPos1;
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dstRect->Width = width1;
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}
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int maths::rectangle_clip(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect)
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{
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int xPos1 = rect1->XPosition;
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int yPos1 = rect1->YPosition;
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int height1 = rect1->Height;
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int xRight2 = rect2->XPosition + rect2->Width;
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int width1 = rect1->Width;
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int yRight2 = rect2->YPosition + rect2->Height;
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if (xPos1 + width1 < rect2->XPosition)
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return 0;
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if (xPos1 >= xRight2)
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return 0;
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int yPos2 = yPos1;
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if (yPos1 + height1 < rect2->YPosition || yPos1 >= yRight2)
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return 0;
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if (xPos1 < rect2->XPosition)
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{
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width1 += xPos1 - rect2->XPosition;
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xPos1 = rect2->XPosition;
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}
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if (xPos1 + width1 > xRight2)
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width1 = xRight2 - xPos1;
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int height2 = height1;
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if (yPos1 < rect2->YPosition)
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{
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height2 = yPos1 - rect2->YPosition + height1;
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yPos2 = rect2->YPosition;
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}
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if (height2 + yPos2 > yRight2)
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height2 = yRight2 - yPos2;
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if (!width1 || !height2)
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return 0;
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if (dstRect)
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{
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dstRect->XPosition = xPos1;
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dstRect->YPosition = yPos2;
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dstRect->Width = width1;
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dstRect->Height = height2;
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}
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return 1;
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}
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int maths::overlapping_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect)
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{
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int v3; // esi
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int v4; // edi
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int v5; // esi
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int v6; // esi
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int v7; // edi
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if (rect1->XPosition >= rect2->XPosition)
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{
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dstRect->XPosition = rect2->XPosition;
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v3 = rect1->Width - rect2->XPosition;
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v4 = rect1->XPosition;
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}
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else
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{
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dstRect->XPosition = rect1->XPosition;
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v3 = rect2->Width - rect1->XPosition;
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v4 = rect2->XPosition;
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}
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dstRect->Width = v3 + v4 + 1;
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v5 = rect1->YPosition;
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if (v5 >= rect2->YPosition)
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{
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dstRect->YPosition = rect2->YPosition;
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v6 = rect1->Height - rect2->YPosition;
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v7 = rect1->YPosition;
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}
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else
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{
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dstRect->YPosition = v5;
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v6 = rect2->Height - rect1->YPosition;
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v7 = rect2->YPosition;
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}
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dstRect->Height = v6 + v7 + 1;
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return dstRect->Width <= rect2->Width + rect1->Width && dstRect->Height <= rect2->Height + rect1->Height;
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}
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