Basically your assumption “has to do something with GPU?” is right. SDL_Surface is used in software rendering. With software rendering, as saloomi2012 correctly noticed, you are using regular RAM to store image data. Thus, in most cases you can access data buffer associated with surface directly, modifying its content, i.e. it is using CPU, hence … Read more
usually rectangle texture is used for spheres texture (u,v) coordinates are used as angles for spherical coordinates. The result is that texels are bigger near equator and smaller near poles. At poles all the texels merge to single pixel. This is how to do it texturing spheres normal/bump mapping When you use these maps (color,normal,light,clouds): … Read more
Use ‘real’ physics for that. ball have parameters acceleration a(ax,ay,az) [m/s^2]… this is sum of all forces driving ball divided by its mass velocity v(vx,vy,vz) [m/s]… actual speed = integration of acceleration v += a * dt position p(x,y,z) [m]… actual position = integration of velocity p += v * dt radius r [m] mass … Read more
Change your ComboBox DrawMode to OwnerDrawVariable. Use the DrawItem event to draw the images from your source (an ImageList, in this case) inside the ComboBox item Bounds. If the ComboBox DropDownStyle is set to DropDownList, the image will be shown in the selection box; if it’s set to DropDown, only the text will be drawn. … Read more
main.py import tkinter as tk import Mod1 import Mod2 root = tk.Tk() m1 = Mod1.Model(root) m2 = Mod2.Model(root) m1.grid(column= 0, row=0) m2.grid(column = 0 ,row=0) def callback(): m1.lift() b = tk.Button(text=”click me”, command=callback) b.grid(column=0,row=1) Mod1.py from __main__ import tk class Model(tk.Frame): def __init__(self, master): tk.Frame.__init__(self, master) self.master = master self.configure(bg=”red”, width=300, height=300) Mod2.py from __main__ … Read more
You should override paintComponent in your JPanel and call super.paintComponent(g) in it. See How to Use Key Bindings tutorial. Key bindings are preffered in this case rather than a KeyListener pack() then setVisible() You should set global variables for x anf y location, so they can be accessed from within your Action. Then in your … Read more
Small adjustments are required to make this work as intended: TextRenderingHint.ClearTypeGridFit gives a better result when rendering the Text. It’s more precise and works well with the grid-fitting nature of Graphics.DrawString. See the notes you can find in the answer linked below for more informations on this matter. StringFormat alignment in both horizontal and vertical … Read more
Use a dashed line, a Thread (or a Swing Timer) & combine them with repaint() and some tweaking of where the dashes start and end – and there you have it. Example package test; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Shape; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import … Read more
Requires Eigen as written, but the core operations should map easily to whatever vector class you’re using. // v0 and v1 are normalized // t can vary between 0 and 1 // http://number-none.com/product/Understanding%20Slerp,%20Then%20Not%20Using%20It/ Vector2f slerp2d( const Vector2f& v0, const Vector2f& v1, float t ) { float dot = v0.dot(v1); if( dot < -1.0f ) dot … Read more