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Create a website: Not drawing polygons facing away from the camera to double the frame rate. 🚀 Legacy Impact
Borland Pascal 7.0 taught a generation of programmers the math behind modern GPUs. While BGI was slow, direct memory access allowed for smooth 3D engines similar to Doom or Wolfenstein 3D .
: Avoid Real types; use LongInt for speed. Grafik und Animation mit Borland Pascal 7.0: 3D...
Grafik und Animation mit Borland Pascal 7.0: 3D-Grundlagen Borland Pascal 7.0 (BP7) was the pinnacle of DOS-era development. It offered high performance through its built-in Assembler and the Graphics Kernel System (BGI). 🏗️ The Technical Foundation : The standard for 3D. Resolution : 320x200 pixels. Color : 256 indexed colors. Memory : 64KB video segment at $A000:0000 . 📐 Core 3D Concepts in BP7 1. The Coordinate System In BP7, you define a 3D point using a record : type Point3D = record x, y, z: Real; end; Use code with caution. Copied to clipboard 2. Projection (3D to 2D)
: Use asm blocks for the inner rendering loops. : Not drawing polygons facing away from the
To display 3D on a 2D screen, you use : ScreenX = (x * Distance) / z + CenterX ScreenY = (y * Distance) / z + CenterY 3. Transformation Matrices
BP7 handles rotation and scaling through sine/cosine lookup tables to save CPU cycles. : y' = y*cos(a) - z*sin(a) Rotation Y : x' = x*cos(a) + z*sin(a) ⚡ Performance Optimization : Avoid Real types; use LongInt for speed
: Draw to a "virtual screen" in RAM, then Move it to video memory to prevent flickering. 🎨 Rendering Techniques Wireframe : The simplest form using Line() .