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Replaced scalar to float

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This commit is contained in:
Joecheong2006
2025-07-22 11:59:46 -07:00
parent b6ae5af4e3
commit 10fadd9185
1 changed files with 17 additions and 19 deletions
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36
examples/shapes/shapes_double_pendulum.c
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@@ -32,13 +32,11 @@
#define SIMULATION_STEPS 30
#define G 9.81
#define scalar float
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
static Vector2 CalculatePendulumEndPoint(scalar l, scalar theta);
static Vector2 CalculateDoublePendulumEndPoint(scalar l1, scalar theta1, scalar l2, scalar theta2);
static Vector2 CalculatePendulumEndPoint(float l, float theta);
static Vector2 CalculateDoublePendulumEndPoint(float l1, float theta1, float l2, float theta2);
//------------------------------------------------------------------------------------
// Program main entry point
@@ -52,18 +50,18 @@ int main(void)
// Simulation Paramters
//--------------------------------------------------------------------------------------
scalar l1 = 15, m1 = 0.2, theta1 = DEG2RAD * 170, w1 = 0;
scalar l2 = 15, m2 = 0.1, theta2 = DEG2RAD * 0, w2 = 0;
scalar lengthScaler = 0.1;
scalar totalM = m1 + m2;
float l1 = 15, m1 = 0.2, theta1 = DEG2RAD * 170, w1 = 0;
float l2 = 15, m2 = 0.1, theta2 = DEG2RAD * 0, w2 = 0;
float lengthScaler = 0.1;
float totalM = m1 + m2;
Vector2 previousPosition = CalculateDoublePendulumEndPoint(l1, theta1, l2, theta2);
previousPosition.x += CENTER_X;
previousPosition.y += CENTER_Y;
// Scale length
scalar L1 = l1 * lengthScaler;
scalar L2 = l2 * lengthScaler;
float L1 = l1 * lengthScaler;
float L2 = l2 * lengthScaler;
// Draw Parameters
//--------------------------------------------------------------------------------------
@@ -82,25 +80,25 @@ int main(void)
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
scalar dt = GetFrameTime();
scalar step = dt / SIMULATION_STEPS, step2 = step * step;
float dt = GetFrameTime();
float step = dt / SIMULATION_STEPS, step2 = step * step;
// Update Physics - larger steps = better approximation
//----------------------------------------------------------------------------------
for (int i = 0; i < SIMULATION_STEPS; ++i)
{
scalar delta = theta1 - theta2;
scalar sinD = sin(delta), cosD = cos(delta), cos2D = cos(2 * delta);
scalar ww1 = w1 * w1, ww2 = w2 * w2;
float delta = theta1 - theta2;
float sinD = sin(delta), cosD = cos(delta), cos2D = cos(2 * delta);
float ww1 = w1 * w1, ww2 = w2 * w2;
// Calculate a1
scalar a1 = (-G * (2 * m1 + m2) * sin(theta1)
float a1 = (-G * (2 * m1 + m2) * sin(theta1)
- m2 * G * sin(theta1 - 2 * theta2)
- 2 * sinD * m2 * (ww2 * L2 + ww1 * L1 * cosD))
/ (L1 * (2 * m1 + m2 - m2 * cos2D));
// Calculate a2
scalar a2 = (2 * sinD * (ww1 * L1 * totalM
float a2 = (2 * sinD * (ww1 * L1 * totalM
+ G * totalM * cos(theta1)
+ ww2 * L2 * m2 * cosD))
/ (L2 * (2 * m1 + m2 - m2 * cos2D));
@@ -170,13 +168,13 @@ int main(void)
}
// Calculate Pendulum End Point
static Vector2 CalculatePendulumEndPoint(scalar l, scalar theta)
static Vector2 CalculatePendulumEndPoint(float l, float theta)
{
return (Vector2){ 10 * l * sin(theta), 10 * l * cos(theta) };
}
// Calculate Double Pendulum End Point
static Vector2 CalculateDoublePendulumEndPoint(scalar l1, scalar theta1, scalar l2, scalar theta2)
static Vector2 CalculateDoublePendulumEndPoint(float l1, float theta1, float l2, float theta2)
{
Vector2 endpoint1 = CalculatePendulumEndPoint(l1, theta1);
Vector2 endpoint2 = CalculatePendulumEndPoint(l2, theta2);