Bases Part II — Handmade Hero — Episode Guide

0:54Blackboard: Clarify linear independence

2:18Blackboard: Bases

6:16Blackboard: What does it mean to say we have an origin?

7:46Blackboard: Consider describing origins and basis vectors in terms of other origins and basis vectors

11:52Blackboard: Why do I care about this at all?

12:12Blackboard: Rotation and scaling

14:14Blackboard: Example rotation

15:09Blackboard: Example scaling

16:03Blackboard: What does that look like in code?

19:48Blackboard: This is what we'd like to introduce into our renderer now

20:20Blackboard: How do we define the X and the Y axis? (Unit circle)

24:41Blackboard: A handy optimisation thanks to being in 2D

28:19Blackboard: You can also directly plug and chug this

29:01Blackboard: Perp operator

31:09Blackboard: All we have to do

32:26Go into the code and create one of these rotating doodads

36:18Run the game to discover that our code is hosed

37:21See what our InvalidDefaultCase says

37:58Let it hit the InvalidDefaultCase sooner

38:34Take a look at the RenderGroup buffer

39:52Step through the code with an eye on PushBufferBase

40:41Moment of realisation: render_entry_coordinate_system was missing its Header

41:57Put our coordinate_system back in there and run again until it hits the InvalidDefaultCase

42:22Put in a case for our coordinate_system

43:52Define the coordinate_system to be something that's visible

46:12View the results in-game and apply transforms

47:47Edit this coordinate system live

48:54Insert some points that are encoded in that axis

51:39Check it out in-game (...or not)

52:26Moment of realisation: It'd be nice if Casey actually used PIndex

52:38Try viewing again

53:04Step through the code watching the coordinates of the Points

53:27Reduce the number of Points and view it in-game

54:19Play with those axes

55:26Do we have pie?^α

56:08Continue playing

57:27Q&A

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57:27Q&A

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57:27Q&A

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59:26@abnercoimbre Do you usually worry a lot about naming schemes? You always seem to choose a good enough name and move on

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59:26@abnercoimbre Do you usually worry a lot about naming schemes? You always seem to choose a good enough name and move on

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59:26@abnercoimbre Do you usually worry a lot about naming schemes? You always seem to choose a good enough name and move on

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59:48@naysayer88 Is that the variable?

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59:48@naysayer88 Is that the variable?

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59:48@naysayer88 Is that the variable?

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1:00:10@kirre1000 How can you draw so fast? Do you use a draw pad and pen?

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1:00:10@kirre1000 How can you draw so fast? Do you use a draw pad and pen?

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1:00:10@kirre1000 How can you draw so fast? Do you use a draw pad and pen?

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1:00:23@garlandobloom I only partly followed, but it seemed fairly easy to get the basic rotation up and running. I'm wondering how much more work it will be to start rendering textures by sampling them across the plane

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1:00:23@garlandobloom I only partly followed, but it seemed fairly easy to get the basic rotation up and running. I'm wondering how much more work it will be to start rendering textures by sampling them across the plane

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1:00:23@garlandobloom I only partly followed, but it seemed fairly easy to get the basic rotation up and running. I'm wondering how much more work it will be to start rendering textures by sampling them across the plane

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1:01:21@nicstop Is it possible to do realloc with memory_arena?

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1:01:21@nicstop Is it possible to do realloc with memory_arena?

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1:01:21@nicstop Is it possible to do realloc with memory_arena?

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1:02:17@cubercaleb Are parametrics and polar functions going to be used later on?

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1:02:17@cubercaleb Are parametrics and polar functions going to be used later on?

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1:02:17@cubercaleb Are parametrics and polar functions going to be used later on?

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1:03:06@cdawzrd Will subpixel positioning and anti-aliasing be part of the software renderer in the exploration phase?

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1:03:06@cdawzrd Will subpixel positioning and anti-aliasing be part of the software renderer in the exploration phase?

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1:03:06@cdawzrd Will subpixel positioning and anti-aliasing be part of the software renderer in the exploration phase?

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1:04:12Make the size proportional as well

1:05:20Go nuts with that

1:05:55@cdawzrd Time-dependent colour^β

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1:05:55@cdawzrd Time-dependent colour^β

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1:05:55@cdawzrd Time-dependent colour^β

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1:07:11@cubercaleb Needs more dots

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1:07:11@cubercaleb Needs more dots

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1:07:11@cubercaleb Needs more dots

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1:07:40Call it done for the day, with special mention made of that weird pulsating thing and a glimpse into the future^γ

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1:07:40Call it done for the day, with special mention made of that weird pulsating thing and a glimpse into the future^γ

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1:07:40Call it done for the day, with special mention made of that weird pulsating thing and a glimpse into the future^γ

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