I Don't Watch 3D Fund, But....
Posted: December 6th, 2017, 6:28 pm
So Let's Get Some Things Straight: I Don't And Will Never Watch 3D Fund, And I'm Not That Smart. We Good? Good. I Feel That I Am Experienced Enough To Start Developing My Own Stuff, And I Want To Make A 3D Engine.
Rules:
1. I Can't Watch Any Chili Vids Between Now And When The Challenge Is Complete. ( Not Even The Main Series )
2. The Challange Is Complete When I Make A Full 3D Game Or Program.
3. I CAN Look To The Forum For Help
Let's Get Started:
So As Always, I Made A Concept Project On Scratch:
https://scratch.mit.edu/projects/190675551/
All Of That Was Made Just Using A Triangle Fill Algorithm ( Got The Idea Cause I Heard Chili Say Something About "Triangle Rasterization" In The Main Series Somewhere Around Lesson 18ish )
Now Tomorrows Task Is To Try To Translate That Crap Into C++, And Make It Real.
Ok, So It's Been 2 Days, And I Have Been Spending Those Days Trying To Draw A Slanted Line, But I Can't Do It! Any Help Appreciated.
My First Attempt Drew A Slanted Line, But Would Only Draw Them Perfectly Slanted.
Attempt No.2, Fail No.2:
Eureka! I Don't Know What I Did, But It Worked!
Spot The Difference?
It Wasn't Long Before I Realized That Specific Angles Only Put Down Every Other Pixel, So I Put The Code Back To Normal, And Watch The Slanted Line Portion Of Old Beginner Lesson 10 And Got This Via Monkey See Monkey Do:
Now I Need To Draw A Triangle, Easy Right? Just Draw From The First Vert To The Next, And Then Loop Back To The First Vert ( Vert Means Vertice ). Well You See That Would Work, But Not With The Line Drawing Code That We Have Now. This Is What That Would Look Like...
....\..........
......\........
........\......
..........\....
............\..
............/..
........../....
Notice How The "Triangle's" Last Two Verts Don't Join? That's Because We Need To Do Some Tweaking To Our Line Code.
Ok, I'm Done With That, And I Would Show You The Functs, But We Have Enough Code In This Post, So... Here's The exe...
Ok, So I Have The Triangles, I Have The Wireframe, But Now I Need To Learn How To Fill The Triangles. I Want To Fill Them One Of 2 Ways:
*Read In SpongeBob Guys Voice* Two Days Later...
I Should Have Know, albinopapa's Got My Back. I Stole Some Of His Code, Put It In A Modified Framework (With Surface Buffer (If That's What That's Called)), Modified His Code And... BOW! Just Like That, I Have The "Thing" Rendered. I Spent Some Time Coming Up With A Way To Make The Back Triangles Not Visible, And I'm Done ( I Replaced The .zip Download Above With The New One). Now I Am Working On Rotation, Lighting And Rendering A Skybox.
Wait For It, Wait For It, Aanndd... FUCK YEAH!! We Have Made The Rotation, The "Skybox", Back Face Culling, And Now... We Have A Thing That You Can Control ( Replaced The Shit Up Top Again )!
Thanks To:
albinopapa: Basically Wrote All The Code
chili: Framework, Forum, Tits... I Mean Tuts
And Some Other Nameless Forumers. ( Jk: DicheBach, albinopapa (Again), And cameron )
But, This Wouldn't Be A Me Game Unless Something Dies In It, So Let's Go!
Rules:
1. I Can't Watch Any Chili Vids Between Now And When The Challenge Is Complete. ( Not Even The Main Series )
2. The Challange Is Complete When I Make A Full 3D Game Or Program.
3. I CAN Look To The Forum For Help
Let's Get Started:
So As Always, I Made A Concept Project On Scratch:
- tris2.PNG (2 KiB) Viewed 4155 times
- tris3.PNG (2.94 KiB) Viewed 4155 times
All Of That Was Made Just Using A Triangle Fill Algorithm ( Got The Idea Cause I Heard Chili Say Something About "Triangle Rasterization" In The Main Series Somewhere Around Lesson 18ish )
Now Tomorrows Task Is To Try To Translate That Crap Into C++, And Make It Real.
Ok, So It's Been 2 Days, And I Have Been Spending Those Days Trying To Draw A Slanted Line, But I Can't Do It! Any Help Appreciated.
My First Attempt Drew A Slanted Line, But Would Only Draw Them Perfectly Slanted.
Code: Select all
void DrawLine(int x0, int y0, int x1, int y1)
{
int x = x0;
int y = y0;
for(int i = 0; i < 800; i++)
{
if( x < x1 )
{
if( y < y1 )
{
y++
x++
PutPixel(x, y, 255, 255, 255);
}
}
}
}Code: Select all
void DrawLine(int x1, int y1, int x2, int y2, Color c)
{
int dx = x2 - x1;
int dy = y2 - y1;
int m = dy / dx;
int b = y1 - m*x1;
for (int x = x1; x <= x2; x++)
{
int y = m*x + b;
PutPixel(x, y, c);
}
}Eureka! I Don't Know What I Did, But It Worked!
Code: Select all
void DrawLine(float x1, float y1, float x2, float y2, Color c)
{
float dx = (x2 - x1);
float dy = (y2 - y1);
float m = dy/dx;
float b = y1 - m*x1;
for (float x = x1; x <= x2; x++)
{
float y = m*x + b;
PutPixel(x, y, c);
}
}Code: Select all
void DrawLine(int x1, int y1, int x2, int y2, Color c)
{
int dx = x2 - x1;
int dy = y2 - y1;
int m = dy / dx;
int b = y1 - m*x1;
for (int x = x1; x <= x2; x++)
{
int y = m*x + b;
PutPixel(x, y, c);
}
}Code: Select all
void DrawLine(int x1, int y1, int x2, int y2, Color c)
{
int dx = (x2 - x1);
int dy = (y2 - y1);
float m = (float) dy/ (float) dx;
float b = y1 - m* (float) x1;
for (int x = x1; x <= x2; x++)
{
float y = m*x + b;
PutPixel(x, y, c);
}
}....\..........
......\........
........\......
..........\....
............\..
............/..
........../....
Notice How The "Triangle's" Last Two Verts Don't Join? That's Because We Need To Do Some Tweaking To Our Line Code.
Ok, I'm Done With That, And I Would Show You The Functs, But We Have Enough Code In This Post, So... Here's The exe...
Ok, So I Have The Triangles, I Have The Wireframe, But Now I Need To Learn How To Fill The Triangles. I Want To Fill Them One Of 2 Ways:
- 1. I Want To Keep Drawing Triangles Of Slightly Smaller Dimensions Each Time
2. I Can Make Lines That Fill Up The Triangle And Get Smaller Each Time
*Read In SpongeBob Guys Voice* Two Days Later...
I Should Have Know, albinopapa's Got My Back. I Stole Some Of His Code, Put It In A Modified Framework (With Surface Buffer (If That's What That's Called)), Modified His Code And... BOW! Just Like That, I Have The "Thing" Rendered. I Spent Some Time Coming Up With A Way To Make The Back Triangles Not Visible, And I'm Done ( I Replaced The .zip Download Above With The New One). Now I Am Working On Rotation, Lighting And Rendering A Skybox.
Wait For It, Wait For It, Aanndd... FUCK YEAH!! We Have Made The Rotation, The "Skybox", Back Face Culling, And Now... We Have A Thing That You Can Control ( Replaced The Shit Up Top Again )!
Thanks To:
albinopapa: Basically Wrote All The Code
chili: Framework, Forum, Tits... I Mean Tuts
And Some Other Nameless Forumers. ( Jk: DicheBach, albinopapa (Again), And cameron )
But, This Wouldn't Be A Me Game Unless Something Dies In It, So Let's Go!